3I/ATLAS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.55,
13.1,
1.1'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
2.4'
tail in p.a. 100 deg);
2025
23.12,
12.8,
1.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
22.68,
13.4,
0.8'
(Y. Nagai,
0.05-m
Refractor + CCD;
1.2'
tail in p.a. 95 deg);
22.55,
13.1,
1'
(O. Miyazaki,
0.32-m
Newtonian);
22.02,
12.9,
0.9'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
2'
tail in p.a. 76 deg);
21.80,
12.7,
1.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
21.65,
13.0,
1.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2'
tail in p.a. 99 deg);
21.63,
12.9,
1.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.9'
tail in p.a. 98 deg);
21.63,
13.0,
1.2'
(C. Wyatt,
0.4-m
Newtonian);
20.95,
12.6,
1.2'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
20.81,
13.2,
2.1'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
2.7'
tail in p.a. 96 deg);
20.80,
12.7,
1.3'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
20.70,
12.7,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5'
tail in p.a. 93 deg);
20.68,
12.8,
1.4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2'
tail in p.a. 107 deg);
20.53,
12.9,
1.5'
(T. Yusa,
0.05-m
Refractor + CCD;
2.1'
tail in p.a. 98 deg);
20.47,
12.8,
1.2'
(C. Wyatt,
0.4-m
Newtonian);
20.13,
12.8,
1'
(A. Kammerer,
Teufelsmuehle (Black Forest), Germany,
0.397-m
Newtonian);
20.04,
14.6,
0.31'
(A. Garcia Sanchez,
Rio Cofio, Robledo de Chavela (MPC Z03),
0.25-m
Schmidt-Cassegrain + CCD);
19.97,
12.5,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5.7'
tail in p.a. 98 deg);
19.92,
12.9,
1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
2'
tail in p.a. 101 deg);
19.80,
12.8,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2'
tail in p.a. 98 deg);
19.80,
12.9,
2.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.5'
tail in p.a. 100 deg);
19.80,
11.7,
3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.7'
tail in p.a. 99 deg);
19.78,
13.0,
2.7'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
2.3'
tail in p.a. 103 deg);
19.71,
12.6,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5.3'
tail in p.a. 97 deg);
19.67,
12.9,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2'
tail in p.a. 102 deg);
19.13,
13.1,
1.6'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
19.04,
14.6,
0.31'
(A. Garcia Sanchez,
Rio Cofio, Robledo de Chavela (MPC Z03),
0.25-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 105 deg);
18.97,
13.3,
0.74'
(S. Shurpakov,
0.15-m
Volosov-Newtonian + CCD;
2.6'
tail in p.a. 95 deg);
18.95,
13.5,
0.5'
(S. Shurpakov,
0.15-m
Volosov-Newtonian + CCD;
3.5'
tail in p.a. 97 deg);
18.95,
12.6,
3'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.92,
12.4,
2.3'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.92,
12.8,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
18.89,
12.1,
2.2'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
4.3'
tail in p.a. 100 deg);
18.87,
12.6,
0.6'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
2'
tail in p.a. 107 deg);
18.78,
11.8,
3.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.9'
tail in p.a. 99 deg);
18.78,
12.7,
3.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.2'
tail in p.a. 101 deg);
18.78,
13.2,
2.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.4'
tail in p.a. 98 deg);
18.67,
13.0,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
3.1'
tail in p.a. 105 deg);
18.52,
13.3,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD;
2.2'
tail in p.a. 100 deg);
18.15,
12.8,
3.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
3.7'
tail in p.a. 100 deg);
18.04,
13.2,
0.7'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
80" tail in p.a. 81 deg);
17.96,
12.4,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5.6'
tail in p.a. 102 deg);
17.84,
12.5,
1.7'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD;
2.9'
tail in p.a. 97 deg);
17.79,
12.1,
3.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3'
tail in p.a. 97 deg);
17.79,
13.3,
2.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 97 deg);
17.78,
13.0,
2.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.9'
tail in p.a. 97 deg);
17.64,
12.8,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2.1'
tail in p.a. 104 deg);
17.57,
12.5,
1.8'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
4.9'
tail in p.a. 101 deg);
17.07,
12.9,
1.4'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD;
1.8'
tail in p.a. 104 deg);
16.92,
14.2,
0.76'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD;
3.3'
tail in p.a. 101 deg);
16.90,
12.2,
1.4'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
16.57,
12.9,
1.6'
(O. Miyazaki,
0.32-m
Newtonian);
16.54,
12.7,
1.6'
(T. Yusa,
0.05-m
Refractor + CCD;
2'
tail in p.a. 101 deg);
16.52,
13.2,
1.6'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
2.3'
tail in p.a. 102 deg);
16.52,
12.3,
1.6'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
2.3'
tail in p.a. 102 deg);
16.52,
14.3,
0.8'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
15.91,
13.7,
1'
(D. Heggie,
Edinburgh, Scotland,
0.05-m
Refractor + CCD;
0.9'
tail in p.a. 99 deg);
15.65,
12.8,
1.4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2.6'
tail in p.a. 106 deg);
15.62,
13.1,
0.9'
(O. Miyazaki,
0.32-m
Newtonian);
14.81,
12.3,
1.4'
(O. Miyazaki,
0.32-m
Newtonian);
14.74,
12.6,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
3.1'
tail in p.a. 100 deg);
14.65,
12.8,
1.4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2.2'
tail in p.a. 106 deg);
14.55,
12.7,
1.2'
(Y. Nagai,
0.05-m
Refractor + CCD;
1.5'
tail in p.a. 95 deg);
14.00,
14.0,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
13.99,
14.0,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
13.99,
14.3,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
13.93,
14.7,
0.54'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD;
3.3'
tail in p.a. 98 deg);
13.86,
12.6,
0.8'
(D. Heggie,
Edinburgh, Scotland,
0.114-m
Prime focus of a reflector + CCD;
2.5'
tail in p.a. 101 deg);
13.80,
12.9,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
13.65,
12.7,
1.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
1.7'
tail in p.a. 105 deg);
13.63,
12.8,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.8'
tail in p.a. 101 deg);
12.90,
12.4,
0.7'
(D. Heggie,
Edinburgh, Scotland,
0.05-m
Refractor + CCD;
1.9'
tail in p.a. 107 deg);
12.66,
12.9,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
1.5'
tail in p.a. 108 deg);
12.65,
12.7,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
4.3'
tail in p.a. 102 deg);
11.96,
12.4,
2.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
11.94,
12.0,
1.6'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
11.90,
12.7,
1.3'
(T. Csorgei,
PalantirII (MPC 247),
0.303-m
Newtonian + CCD;
3.2'
tail in p.a. 99 deg);
11.60,
12.2,
1.2'
(Y. Nagai,
0.05-m
Refractor + CCD);
11.04,
12.2,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD;
4.9'
tail in p.a. 100 deg);
10.96,
12.0,
2.9'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
10.87,
11.7,
1.9'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD;
2.5'
tail in p.a. 94 deg);
10.87,
12.5,
1.2'
(C. Harder,
Jeersdorf h,
0.35-m
Newtonian);
10.72,
12.7,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
6.3'
tail in p.a. 101 deg);
10.66,
12.6,
1.7'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2.3'
tail in p.a. 101 deg);
10.31,
12.0,
4'
(W. Souza,
0.05-m
Refractor + CCD);
10.20,
12.0,
2'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
5'
tail in p.a. 107 deg);
09.85,
13.0,
0.8'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
5'
tail in p.a. 99 deg);
09.57,
12.8,
1.3'
(T. Yusa,
0.05-m
Refractor + CCD);
09.55,
12.2,
2'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD;
3'
tail in p.a. 107 deg);
08.82,
12.4,
1'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
4.1'
tail in p.a. 103 deg);
08.20,
12.3,
1.6'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3'
tail in p.a. 97 deg);
08.10,
14.3,
0.31'
(A. Garcia Sanchez,
Rio Cofio, Robledo de Chavela (MPC Z03),
0.25-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 104 deg);
08.06,
12.6,
1'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
3'
tail);
08.00,
13.6,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
07.99,
13.5,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
07.98,
13.8,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
06.84,
12.2,
1.5'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1.8'
tail in p.a. 100 deg);
04.96,
11.6,
0.8'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
7.5'
tail in p.a. 112 deg);
04.64,
11.8,
1.5'
(Y. Nagai,
0.05-m
Refractor + CCD);
04.52,
12.6,
1.3'
(T. Yusa,
0.05-m
Refractor + CCD);
04.30,
11.6,
4'
(W. Souza,
0.05-m
Refractor + CCD);
04.06,
10.3,
1.4'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
03.71,
11.8,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 100 deg);
03.57,
13.1,
1.1'
(T. Yusa,
0.05-m
Refractor + CCD);
03.00,
13.8,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
03.00,
13.3,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
02.97,
11.3,
1.3'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
02.85,
12.4,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD);
01.70,
12.3,
1.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2.1'
tail in p.a. 105 deg);
01.68,
12.0,
2.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
3.8'
tail in p.a. 103 deg);
01.23,
11.3,
3.2'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
3.3'
tail in p.a. 105 deg);
dec
31.82,
10.9,
2.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
3.5'
tail in p.a. 108 deg);
31.82,
12.8,
1.2'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
2'
tail in p.a. 108 deg);
31.82,
11.8,
2.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
3'
tail in p.a. 108 deg);
31.69,
11.6,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.6'
tail in p.a. 105 deg);
31.68,
11.9,
1.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
1.3'
tail in p.a. 104 deg);
31.23,
11.3,
3.5'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
2.9'
tail in p.a. 102 deg);
31.05,
11.5,
2.26'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
31.04,
11.4,
6.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.13° tail in p.a. 102 deg);
31.02,
13.6,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
31.01,
13.3,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
30.99,
12.9,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
30.90,
11.9,
1.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
4.1'
tail in p.a. 101 deg);
30.85,
12.0,
1.2'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
2.3'
tail in p.a. 102 deg);
30.82,
11.8,
2.2'
(K. Harikae,
0.15-m
Newtonian + CCD;
3'
tail in p.a. 102 deg);
30.69,
11.7,
1.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 106 deg);
30.61,
12.0,
2.7'
(T. Yusa,
0.05-m
Refractor + CCD;
3.2'
tail in p.a. 113 deg);
30.24,
11.2,
3.9'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
4'
tail in p.a. 109 deg);
30.21,
11.1,
2.2'
(E. van Dijk,
0.155-m
Newtonian);
30.21,
12.5,
0.7'
(J. Warell,
Lindby,
40x100
Binoculars);
30.18,
11.7,
0.5'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
4'
tail in p.a. 110 deg);
30.16,
11.0,
2.8'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
30.12,
11.4,
6.9'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
16.1'
tail in p.a. 103 deg);
30.11,
12.7,
1.5'
(H. Smith,
0.3-m
Newtonian + CCD);
29.80,
11.5,
2.2'
(O. Miyazaki,
0.32-m
Newtonian);
29.71,
12.2,
1.2'
(Y. Nagai,
0.05-m
Refractor + CCD;
0.7'
tail in p.a. 85 deg);
29.64,
11.7,
1.8'
(C. Wyatt,
0.25-m
Newtonian);
29.25,
10.6,
4.3'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
1.4'
tail in p.a. 102 deg);
29.22,
11.4,
4.5'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
29.19,
12.1,
1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
7'
tail in p.a. 108 deg);
29.15,
11.4,
2'
(M. Kwinta,
0.3-m
Newtonian);
29.11,
11.0,
9.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.25° tail in p.a. 103 deg);
29.08,
11.4,
1.5'
(E. Banach,
0.25-m
Newtonian);
29.08,
11.0,
2'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain;
0.02° tail in p.a. 80 deg);
29.08,
11.5,
2.3'
(M. Meyer,
0.254-m
Newtonian);
28.98,
11.3,
4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.3'
tail in p.a. 105 deg);
28.97,
12.2,
4.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
6.7'
tail in p.a. 104 deg);
28.97,
12.1,
4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4.7'
tail in p.a. 104 deg);
28.92,
11.7,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.74,
12.0,
1.8'
(T. Yusa,
0.05-m
Refractor + CCD;
2.6'
tail in p.a. 104 deg);
28.19,
11.4,
2'
(E. van Dijk,
0.155-m
Newtonian);
28.18,
11.4,
2'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
28.14,
11.5,
1.8'
(A. Kammerer,
Teufelsmuehle (Black Forest), Germany,
0.397-m
Newtonian);
28.03,
11.3,
3.2'
(C. Harder,
nahe Westerholz,
0.3-m
Newtonian);
28.00,
12.2,
1.4'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
1'
tail in p.a. 102 deg);
27.80,
11.7,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.5'
tail in p.a. 105 deg);
27.79,
11.2,
2'
(R. Aikawa,
0.203-m
Schmidt-Cassegrain);
27.68,
11.9,
1.5'
(Y. Nagai,
0.05-m
Refractor + CCD);
27.17,
10.9,
8.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.15° tail in p.a. 106 deg);
27.09,
11.3,
3'
(M. Meyer,
0.254-m
Newtonian);
27.07,
12.9,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
27.06,
11.7,
2.1'
(M. Šrejber,
Hvezdarna a planetarium Hradec Kralove (MPC 048),
0.25-m
Newtonian + CCD;
4.9'
tail in p.a. 107 deg);
27.05,
13.0,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
27.04,
13.4,
--
(A. Pratt,
Almalex Observatory, Leeds,
0.279-m
Schmidt-Cassegrain + CCD);
27.04,
[10.3,
2'
(M. Biely,
20x80
Binoculars);
27.03,
12.0,
1'
(A. Scholten,
Bussloo,
0.356-m
Schmidt-Cassegrain);
27.02,
12.0,
5.9'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
4.4'
tail in p.a. 104 deg);
26.97,
11.3,
2'
(E. van Dijk,
0.155-m
Newtonian);
26.80,
11.5,
1.7'
(O. Miyazaki,
0.32-m
Newtonian);
26.71,
11.7,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2'
tail in p.a. 105 deg);
26.65,
11.9,
1.6'
(Y. Nagai,
0.05-m
Refractor + CCD);
26.60,
11.8,
1.8'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
2.4'
tail in p.a. 104 deg);
26.12,
11.0,
2'
(M. Meyer,
0.254-m
Newtonian);
26.02,
11.6,
2.3'
(M. Šrejber,
Hvezdarna a planetarium Hradec Kralove (MPC 048),
0.25-m
Newtonian + CCD;
5.5'
tail in p.a. 107 deg);
25.97,
11.5,
3'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
3.2'
tail in p.a. 101 deg);
25.94,
11.5,
2.3'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5.5'
tail in p.a. 107 deg);
7P/Pons-Winnecke
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
20.12,
20.9,
--
(J. Maikner,
New Ringgold,
0.3-m
Hyperboloid astro-camera + CCD);
24P/Schaumasse
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
24.27,
9.1,
8'
(M. Goiato,
20x100
Binoculars);
2025
23.77,
9.1,
5'
(A. Pearce,
Geordie Bay, Rottnest Island, W. Australia,
0.05-m
Refractor + CCD);
23.16,
10.2,
4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
22.72,
10.3,
3.8'
(Y. Nagai,
0.05-m
Refractor + CCD);
22.19,
8.7,
6'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
22.18,
9.3,
6.5'
(M. Meyer,
0.152-m
Refractor);
22.14,
9.5,
6.5'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
22.12,
9.8,
6.1'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
22.03,
10.1,
4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
22.01,
10.5,
1.2'
(T. Sciezor,
C,
0.05-m
Camera lens + CCD);
21.81,
9.6,
5'
(R. Aikawa,
0.203-m
Schmidt-Cassegrain);
21.80,
9.7,
6'
(O. Miyazaki,
0.32-m
Newtonian);
21.21,
8.8,
5.5'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
21.11,
9.9,
5.9'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD;
0.08° tail in p.a. 301 deg);
21.04,
10.4,
2.1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
20.79,
9.5,
6'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
20.16,
9.0,
5.5'
(A. Kammerer,
Teufelsmuehle (Black Forest), Germany,
0.397-m
Newtonian);
20.14,
9.6,
5'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
20.13,
9.4,
4'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
20.08,
10.6,
1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
20.04,
11.0,
2.3'
(P. Dekelver,
0.3-m
Newtonian + CCD);
19.84,
10.6,
3.2'
(O. Miyazaki,
0.32-m
Newtonian);
19.39,
9.3,
8.8'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
19.15,
9.6,
6.5'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
19.10,
9.6,
8'
(M. Biely,
20x80
Binoculars);
19.02,
10.7,
3'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.78,
9.3,
5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
18.33,
9.2,
10'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD;
8.6'
tail in p.a. 295 deg);
18.30,
9.2,
6'
(M. Goiato,
0.22-m
Newtonian);
18.29,
9.0,
8'
(M. Goiato,
20x100
Binoculars);
18.18,
10.2,
6.7'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
4'
tail in p.a. 297 deg);
18.15,
9.5,
9'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD;
0.13° tail in p.a. 296 deg);
18.14,
9.2,
7'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
18.05,
11.1,
0.8'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
18.03,
11.2,
1.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.8'
tail in p.a. 296 deg);
17.77,
9.3,
6'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
17.75,
9.0,
8'
(M. Mattiazzo,
Strathalbyn, South Australia,
15x70
Binoculars);
17.71,
9.1,
8.4'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
17.39,
9.3,
10'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD;
10.2'
tail in p.a. 292 deg);
17.14,
9.8,
6'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD;
0.17° tail in p.a. 286 deg);
16.87,
10.0,
4'
(Y. Nagai,
0.05-m
Refractor + CCD);
16.75,
9.4,
6.9'
(T. Yusa,
0.05-m
Refractor + CCD);
16.34,
9.3,
9'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
16.18,
9.4,
2.9'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
16.18,
8.8,
5.5'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
16.18,
8.8,
5'
(G. Scheerle,
9x63.0
Binoculars);
16.14,
10.0,
4'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
15.83,
10.8,
4.9'
(O. Miyazaki,
0.32-m
Newtonian);
15.77,
9.5,
6'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
14.82,
10.1,
4'
(O. Miyazaki,
0.32-m
Newtonian);
14.77,
9.2,
8'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
14.43,
12.8,
5.4'
(T. Csorgei,
Chopin Observatory (MPC 247),
0.08-m
Refractor + CCD);
14.34,
9.3,
10'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
14.18,
9.3,
8.84'
(N. James,
0.072-m
Refractor + CCD);
14.15,
9.9,
3'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
14.10,
9.9,
2.7'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
13.81,
10.0,
3.6'
(O. Miyazaki,
0.32-m
Newtonian);
13.79,
9.2,
8'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
13.17,
9.8,
6'
(C. Labordena,
La Serra de Engarcera,
0.2-m
Schmidt-Cassegrain);
13.15,
9.7,
8'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
12.77,
9.2,
8'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
12.14,
9.8,
8'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
11.68,
10.0,
4'
(Y. Nagai,
0.05-m
Refractor + CCD);
11.43,
8.8,
10'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
11.14,
9.5,
8.1'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
10.77,
9.1,
8'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
10.15,
9.7,
9'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
09.81,
9.1,
7'
(T. Yusa,
0.05-m
Refractor + CCD);
08.14,
9.5,
7'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
08.11,
9.1,
15'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.14° tail in p.a. 290 deg);
07.81,
9.0,
6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
07.34,
9.1,
7'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
07.08,
9.1,
16'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.06° tail in p.a. 294 deg);
06.75,
9.4,
7'
(T. Yusa,
0.05-m
Refractor + CCD);
06.14,
9.7,
8'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
06.11,
9.2,
15'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.08° tail in p.a. 297 deg);
05.11,
9.2,
16'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
2.2'
tail in p.a. 292 deg);
05.06,
9.6,
9'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.1-m
Refractor + CCD);
05.06,
10.5,
3.1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
04.70,
9.6,
3.9'
(Y. Nagai,
0.05-m
Refractor + CCD);
04.43,
9.2,
10'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
04.28,
10.1,
3.9'
(W. Souza,
0.05-m
Refractor + CCD);
04.15,
9.7,
10'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
04.09,
9.6,
4'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
03.44,
9.3,
10'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
03.43,
9.5,
12'
(T. Lehmann,
Chopin Obs (remote),
0.08-m
Refractor + CCD;
0.9'
tail in p.a. 285 deg);
02.14,
9.9,
7'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
01.39,
9.1,
10'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
01.22,
11.0,
3'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
3'
tail in p.a. 295 deg);
dec
31.83,
9.3,
11.2'
(K. Yoshimoto,
0.065-m
Camera lens + CCD);
31.83,
9.4,
11.7'
(K. Yoshimoto,
0.077-m
Refractor + CCD);
31.23,
10.5,
4.1'
(P. Dekelver,
0.3-m
Newtonian + CCD;
4.4'
tail in p.a. 295 deg);
31.23,
9.6,
7.1'
(À. Bueno,
Tevinca (MPC 247),
0.073-m
Refractor + CCD);
31.17,
8.4,
6'
(G. Scheerle,
9x63.0
Binoculars);
31.14,
9.3,
16'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.12° tail in p.a. 295 deg);
31.07,
9.3,
14'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.13° tail in p.a. 292 deg);
30.83,
10.2,
4'
(K. Harikae,
0.15-m
Newtonian + CCD);
30.66,
9.8,
6.4'
(T. Yusa,
0.05-m
Refractor + CCD);
30.50,
10.1,
5'
(D. Zubenel,
De Soto, Kansas.,
0.318-m
Newtonian);
30.22,
9.5,
13'
(J. Warell,
Lindby,
20x100
Binoculars);
30.19,
8.4,
5'
(E. van Dijk,
0.155-m
Newtonian);
30.18,
10.5,
4.5'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
30.17,
11.6,
1.7'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
30.16,
10.6,
5'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
30.14,
10.0,
5'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
29.82,
10.5,
5'
(O. Miyazaki,
0.32-m
Newtonian);
29.73,
10.0,
4.5'
(Y. Nagai,
0.05-m
Refractor + CCD);
29.43,
9.0,
17'
(T. Lehmann,
Utah (remote),
0.106-m
Refractor + CCD;
0.1° tail in p.a. 295 deg);
29.22,
9.4,
7.1'
(À. Bueno,
Tevinca,
0.073-m
Refractor + CCD);
29.18,
10.1,
3.5'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
29.16,
9.8,
3.5'
(M. Kwinta,
0.3-m
Newtonian);
29.16,
10.0,
5.6'
(W. Kutschera,
0.25-m
Newtonian);
29.11,
8.4,
5.5'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
29.11,
8.4,
6'
(G. Scheerle,
9x63.0
Binoculars);
29.10,
9.5,
4'
(E. Banach,
0.25-m
Newtonian);
29.09,
9.5,
6'
(M. Meyer,
0.254-m
Newtonian);
29.07,
9.3,
19'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.35° tail in p.a. 296 deg);
29.02,
9.6,
4.9'
(M. Biely,
20x80
Binoculars);
29.00,
10.4,
8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.2'
tail in p.a. 298 deg);
28.99,
10.6,
9.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.9'
tail in p.a. 298 deg);
28.99,
9.3,
9'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.75,
9.9,
5.7'
(T. Yusa,
0.05-m
Refractor + CCD);
28.47,
8.9,
12'
(T. Lehmann,
Utah (remote),
0.106-m
Refractor + CCD);
28.22,
8.6,
6'
(G. Scheerle,
9x63.0
Binoculars);
28.20,
9.1,
5.5'
(E. van Dijk,
0.155-m
Newtonian);
28.19,
10.5,
5'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
28.16,
9.2,
5.5'
(A. Kammerer,
Teufelsmuehle (Black Forest), Germany,
0.397-m
Newtonian);
28.14,
9.9,
5'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
28.05,
9.8,
6.9'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD);
27.83,
9.9,
5'
(R. Aikawa,
0.203-m
Schmidt-Cassegrain);
27.69,
10.1,
3'
(Y. Nagai,
0.05-m
Refractor + CCD);
27.46,
9.6,
11'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
27.21,
8.9,
11'
(S. Getliffe,
7x50
Binoculars);
27.20,
9.5,
17'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.13° tail in p.a. 290 deg);
27.17,
10.1,
2.8'
(J. Konecny,
Medlov - Hlivice,
25x100
Binoculars);
27.14,
9.7,
10'
(D. Csordás,
Baja Astronomical Observatory, Hungary,
0.15-m
Newtonian + CCD);
27.14,
9.9,
3.8'
(W. Kutschera,
0.25-m
Newtonian);
27.12,
10.1,
3.4'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
27.10,
9.4,
9'
(M. Meyer,
0.254-m
Newtonian);
27.06,
9.4,
17'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.14° tail in p.a. 294 deg);
27.05,
10.5,
4'
(A. Scholten,
Bussloo,
0.356-m
Schmidt-Cassegrain);
27.04,
10.1,
2.9'
(M. Biely,
20x80
Binoculars);
27.03,
11.1,
8'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
2.6'
tail in p.a. 290 deg);
27.00,
9.6,
4'
(E. van Dijk,
0.155-m
Newtonian);
26.81,
10.0,
5'
(O. Miyazaki,
0.32-m
Newtonian);
26.77,
9.1,
7'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
26.69,
10.7,
2.4'
(Y. Nagai,
0.05-m
Refractor + CCD);
26.52,
10.3,
9'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
26.40,
9.6,
12'
(T. Lehmann,
Chopin Obs (remote),
0.08-m
Refractor + CCD;
1.3'
tail in p.a. 293 deg);
26.33,
9.6,
9'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
26.24,
10.0,
3'
(M. Deconinck,
Fernelmont,
40x130
Binoculars);
26.22,
10.0,
5'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
26.22,
9.6,
4.2'
(W. Kutschera,
0.25-m
Newtonian);
26.20,
10.3,
5.9'
(M. Buechner,
Tevinca (MPC 247),
0.073-m
Refractor + CCD);
26.20,
10.2,
5.9'
(À. Bueno,
Tevinca (MPC 247),
0.073-m
Refractor + CCD);
26.13,
9.8,
5.5'
(M. Meyer,
0.254-m
Newtonian);
26.06,
9.6,
9.7'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD);
26.00,
10.6,
4.3'
(P. Dekelver,
0.3-m
Newtonian + CCD);
29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.61,
12.4,
1.9'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
23.14,
12.6,
2.3'
(P. Dekelver,
0.3-m
Newtonian + CCD);
22.70,
12.9,
2'
(Y. Nagai,
0.05-m
Refractor + CCD);
21.99,
13.1,
0.8'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
21.96,
13.0,
1.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
21.71,
13.2,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
21.65,
12.4,
1.9'
(C. Wyatt,
0.4-m
Newtonian);
21.02,
12.9,
1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
20.77,
12.7,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.74,
12.8,
2.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
20.58,
13.0,
2'
(T. Yusa,
0.05-m
Refractor + CCD);
19.99,
12.8,
1.3'
(W. Kutschera,
0.508-m
Newtonian);
19.99,
12.4,
2.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
19.80,
12.9,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.73,
13.0,
2.2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
19.14,
13.6,
0.6'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
19.01,
12.3,
3.2'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.97,
12.9,
1.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.73,
12.8,
2.2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
18.01,
12.6,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
17.70,
13.0,
2.2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
17.09,
12.3,
3.3'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
16.66,
12.6,
2.1'
(T. Yusa,
0.05-m
Refractor + CCD);
15.71,
12.8,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
14.71,
12.9,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
13.71,
12.9,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
12.72,
12.8,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
11.65,
12.9,
2.3'
(Y. Nagai,
0.05-m
Refractor + CCD);
10.72,
12.6,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
10.32,
12.4,
1.9'
(W. Souza,
0.05-m
Refractor + CCD);
09.81,
12.8,
1.9'
(T. Yusa,
0.05-m
Refractor + CCD);
06.75,
13.2,
1.3'
(T. Yusa,
0.05-m
Refractor + CCD);
04.98,
11.7,
1.3'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
04.66,
12.3,
1.1'
(Y. Nagai,
0.05-m
Refractor + CCD);
04.08,
10.6,
1.5'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
03.75,
12.8,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
02.98,
12.3,
0.7'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
02.84,
12.5,
1.6'
(T. Yusa,
0.05-m
Refractor + CCD);
01.73,
12.8,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.12,
12.9,
1.3'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD);
dec
31.81,
12.8,
1.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
31.21,
12.4,
1.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
31.13,
12.5,
2.3'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD);
31.11,
12.4,
4'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
30.76,
13.0,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.66,
12.6,
1.6'
(T. Yusa,
0.05-m
Refractor + CCD);
30.25,
13.0,
1'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD);
30.17,
12.9,
1.2'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
30.17,
13.2,
0.4'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
30.11,
13.7,
0.45'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
29.74,
13.0,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.72,
13.1,
1.1'
(Y. Nagai,
0.05-m
Refractor + CCD);
28.73,
12.6,
1.5'
(T. Yusa,
0.05-m
Refractor + CCD);
28.27,
12.7,
2.2'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
27.19,
12.8,
1.2'
(W. Kutschera,
0.508-m
Newtonian);
27.13,
13.2,
0.7'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
27.13,
12.5,
3.9'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
27.05,
12.6,
5.3'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
26.83,
12.7,
0.9'
(O. Miyazaki,
0.32-m
Newtonian);
26.61,
13.4,
0.8'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
26.52,
13.2,
2'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
26.17,
11.9,
2.2'
(W. Kutschera,
0.25-m
Newtonian);
26.04,
12.3,
1.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
26.02,
12.7,
1.3'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
0.5'
tail in p.a. 39 deg);
40P/Vaisala
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
20.24,
16.9,
0.24'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
17.76,
16.1,
0.38'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
0.8'
tail in p.a. 280 deg);
14.54,
16.6,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
0.4'
tail in p.a. 277 deg);
dec
26.54,
16.8,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
26.23,
16.3,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.4'
tail in p.a. 290 deg);
43P/Wolf-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.61,
16.2,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
3.3'
tail in p.a. 295 deg);
2025
20.76,
16.1,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.8'
tail in p.a. 301 deg);
12.67,
16.4,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.5'
tail in p.a. 297 deg);
03.73,
16.7,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
dec
30.71,
16.9,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.12,
17.4,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
29.14,
16.5,
0.8'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.08° tail in p.a. 293 deg);
26.03,
17.0,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
47P/Ashbrook-Jackson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
18.74,
17.6,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
2025
07.74,
16.9,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD);
dec
28.84,
18.1,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.75,
16.3,
0.5'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.4'
tail in p.a. 86 deg);
48P/Johnson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.75,
18.5,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 74 deg);
2025
18.75,
18.3,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 77 deg);
13.03,
18.7,
--
(J. Maikner,
New Ringgold,
0.3-m
Hyperboloid astro-camera + CCD;
1'
tail in p.a. 70 deg);
dec
27.80,
17.6,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.3'
tail in p.a. 61 deg);
26.81,
18.0,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
26.80,
17.1,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 58 deg);
26.55,
17.7,
0.3'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
63P/Wild
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
08.55,
18.3,
0.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
74P/Smirnova-Chernykh
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
27.11,
20.1,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
78P/Gehrels
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
12.10,
16.5,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
2025
dec
28.76,
16.9,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
25.74,
16.8,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
88P/Howell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
21.56,
14.8,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
14.56,
14.5,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
93P/Lovas
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
26.76,
18.2,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
95P/Chiron
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.75,
19.2,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
123P/West-Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
21.99,
18.1,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
19.91,
18.6,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.05,
17.8,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.77,
18.5,
0.39'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
07.89,
18.0,
0.7'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD);
05.00,
18.9,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
dec
28.92,
18.3,
0.7'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.5'
tail in p.a. 97 deg);
26.83,
19.3,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.09,
18.4,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
124P/Mrkos
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
22.19,
18.8,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
20.20,
18.7,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.24,
19.1,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
06.93,
19.0,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
05.20,
19.8,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
dec
31.18,
19.4,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
30.11,
19.5,
0.2'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
27.21,
19.5,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
143P/Kowal-Mrkos
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
13.19,
19.0,
--
(J. Maikner,
New Ringgold,
0.3-m
Hyperboloid astro-camera + CCD);
2025
dec
30.06,
19.2,
0.22'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
145P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
21.77,
16.6,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
19.75,
17.3,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.77,
16.2,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
18.75,
16.3,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
17.75,
16.1,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.4'
tail in p.a. 57 deg);
12.14,
16.7,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
dec
28.76,
15.7,
0.7'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.3'
tail in p.a. 51 deg);
164P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.14,
17.7,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
14.02,
17.8,
0.5'
(G. Pappa,
Spain (remote control),
0.3-m
Newtonian + CCD);
dec
30.13,
17.9,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
28.98,
17.8,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 284 deg);
25.96,
17.5,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
175P/Hergenrother
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
27.08,
21.2,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
195P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.58,
17.7,
0.25'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
dec
30.19,
18.5,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
210P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.21,
16.2,
0.24'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
17.75,
14.3,
0.8'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
2.6'
tail in p.a. 292 deg);
17.19,
13.4,
2.7'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
16.87,
15.0,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD);
06.83,
13.8,
1'
(T. Yusa,
0.05-m
Refractor + CCD);
02.49,
13.5,
1.5'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
dec
31.22,
12.2,
0.4'
(W. Hasubick,
0.44-m
Newtonian);
30.86,
13.7,
1.7'
(K. Harikae,
0.15-m
Newtonian + CCD);
30.20,
12.8,
1.3'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
28.86,
13.3,
1'
(T. Yusa,
0.05-m
Refractor + CCD;
0.7'
tail in p.a. 287 deg);
28.20,
13.1,
1'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
27.23,
13.0,
2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.07° tail in p.a. 292 deg);
26.53,
13.3,
2'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
2.3'
tail in p.a. 292 deg);
26.18,
13.0,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3.6'
tail in p.a. 292 deg);
217P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
16.59,
17.5,
0.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
0.3'
tail in p.a. 145 deg);
2025
dec
27.10,
18.3,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
218P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
31.86,
18.9,
0.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
0.4'
tail in p.a. 305 deg);
30.26,
19.2,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
233P/La Sagra
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
27.93,
19.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
26.04,
19.9,
0.11'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
235P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.80,
13.7,
0.9'
(A. Pearce,
Geordie Bay, Rottnest Island, W. Australia,
0.05-m
Refractor + CCD);
2025
21.67,
13.8,
0.8'
(C. Wyatt,
0.4-m
Newtonian);
19.19,
14.4,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD);
19.17,
13.9,
1.6'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
17.72,
13.7,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
1.8'
tail in p.a. 281 deg);
17.18,
13.8,
1.6'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
16.84,
13.6,
1'
(T. Yusa,
0.05-m
Refractor + CCD;
1'
tail in p.a. 289 deg);
06.80,
14.4,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD;
1.5'
tail in p.a. 286 deg);
dec
31.88,
13.9,
1.1'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
10'
tail in p.a. 283 deg);
30.27,
14.6,
0.4'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
28.20,
13.5,
1'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
26.53,
13.8,
1'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
2.5'
tail in p.a. 283 deg);
26.20,
13.6,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
4.9'
tail in p.a. 285 deg);
240P-B/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.48,
16.3,
0.47'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
21.73,
17.2,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
20.74,
17.6,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
0.2'
tail in p.a. 84 deg);
20.73,
17.0,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
20.55,
16.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.78,
16.7,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
19.77,
17.5,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
19.77,
17.4,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
19.73,
17.1,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
19.72,
17.4,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
18.89,
17.4,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.80,
16.1,
0.6'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.4'
tail in p.a. 93 deg);
18.80,
16.7,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
18.77,
15.9,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 92 deg);
18.77,
16.7,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 97 deg);
18.76,
16.8,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 100 deg);
18.74,
17.0,
0.8'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 89 deg);
18.73,
17.3,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.47,
16.5,
0.4'
(T. Yusa,
0.05-m
Refractor + CCD);
17.78,
16.3,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 89 deg);
17.77,
16.6,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.8'
tail in p.a. 91 deg);
17.77,
17.2,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 94 deg);
17.73,
16.2,
0.8'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 85 deg);
17.73,
17.2,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
17.49,
16.1,
0.5'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
16.48,
16.0,
0.4'
(T. Yusa,
0.05-m
Refractor + CCD);
15.06,
15.3,
0.33'
(T. Csorgei,
Chopin Observatory (MPC 247),
0.08-m
Refractor + CCD);
14.69,
16.2,
0.48'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD);
14.42,
16.0,
0.5'
(Y. Nagai,
0.05-m
Refractor + CCD);
11.91,
16.4,
0.8'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
11.02,
16.2,
0.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
09.55,
15.8,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD);
08.72,
15.9,
0.7'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
0.5'
tail in p.a. 90 deg);
07.44,
16.4,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
06.82,
16.5,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD);
06.51,
16.3,
0.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
0.4'
tail in p.a. 85 deg);
06.49,
15.7,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
05.72,
15.9,
0.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
05.49,
16.1,
0.47'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
04.77,
16.6,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.77,
16.1,
0.7'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
0.2'
tail in p.a. 97 deg);
04.76,
15.7,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 97 deg);
04.76,
16.9,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
04.75,
16.8,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 93 deg);
01.59,
14.9,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
dec
30.73,
15.2,
0.41'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD);
30.53,
16.4,
0.4'
(T. Yusa,
0.05-m
Refractor + CCD);
29.71,
17.2,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
28.94,
15.4,
0.7'
(M. Šrejber,
Hvezdarna a planetarium Hradec Kralove (MPC 048),
0.25-m
Newtonian + CCD;
1.6'
tail in p.a. 88 deg);
28.82,
15.9,
0.6'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.4'
tail in p.a. 102 deg);
28.77,
14.8,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.76,
16.7,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.76,
16.1,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.72,
16.0,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.59,
15.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.43,
14.8,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD);
27.78,
16.3,
0.8'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 82 deg);
27.76,
14.9,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 86 deg);
27.75,
16.4,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 86 deg);
27.75,
15.7,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 75 deg);
27.74,
15.6,
0.6'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
0.8'
tail in p.a. 93 deg);
26.98,
16.7,
0.9'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
26.88,
14.6,
1.2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
26.84,
15.3,
0.7'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.7'
tail in p.a. 70 deg);
26.75,
14.8,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 82 deg);
26.74,
16.9,
0.9'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
26.74,
16.0,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 77 deg);
26.74,
15.9,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 80 deg);
26.72,
16.0,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD);
26.58,
14.9,
0.8'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
26.54,
15.1,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.54,
14.0,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
25.79,
15.8,
0.5'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
1.3'
tail in p.a. 89 deg);
25.72,
16.0,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
240P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.55,
14.6,
0.9'
(Y. Nagai,
0.05-m
Refractor + CCD);
2025
23.48,
14.2,
0.7'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
4.7'
tail in p.a. 218 deg);
22.79,
14.2,
0.6'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
21.82,
13.9,
0.3'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
21.73,
14.2,
0.9'
(P. Dekelver,
0.3-m
Newtonian + CCD);
21.52,
14.0,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
20.75,
13.2,
0.8'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
20.74,
15.1,
1.3'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 92 deg);
20.73,
13.6,
0.5'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
20.73,
14.0,
1'
(P. Dekelver,
0.3-m
Newtonian + CCD);
20.55,
13.9,
1.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2'
tail in p.a. 86 deg);
20.55,
14.1,
1.2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
20.45,
14.1,
0.6'
(C. Wyatt,
0.4-m
Newtonian);
19.83,
15.3,
0.31'
(A. Garcia Sanchez,
Rio Cofio, Robledo de Chavela (MPC Z03),
0.25-m
Schmidt-Cassegrain + CCD);
19.78,
13.0,
2.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
19.77,
14.3,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
19.77,
14.4,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
19.73,
15.3,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
19.72,
14.8,
1.1'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
19.55,
14.4,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
18.89,
13.1,
3'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.82,
15.4,
0.31'
(A. Garcia Sanchez,
Rio Cofio, Robledo de Chavela (MPC Z03),
0.25-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 95 deg);
18.80,
13.2,
2'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
1.5'
tail in p.a. 91 deg);
18.80,
14.4,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
18.78,
13.3,
1.2'
(W. Kutschera,
0.508-m
Newtonian);
18.77,
12.9,
3.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.9'
tail in p.a. 91 deg);
18.77,
14.0,
2.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.1'
tail in p.a. 93 deg);
18.77,
13.0,
0.8'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
18.76,
13.9,
3.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2'
tail in p.a. 96 deg);
18.75,
13.3,
1.2'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
18.74,
14.7,
1.6'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 92 deg);
18.73,
13.6,
1.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.55,
14.3,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
18.47,
14.3,
1'
(T. Yusa,
0.05-m
Refractor + CCD);
17.78,
12.9,
2.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.3'
tail in p.a. 92 deg);
17.77,
14.4,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.2'
tail in p.a. 88 deg);
17.77,
14.2,
2.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.9'
tail in p.a. 94 deg);
17.73,
14.5,
1.3'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 85 deg);
17.73,
13.8,
1.2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
17.71,
14.4,
1'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD);
17.52,
14.2,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
1.4'
tail in p.a. 108 deg);
17.49,
13.8,
1.1'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
2.6'
tail in p.a. 216 deg);
16.69,
13.5,
2.1'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
16.55,
12.4,
1.5'
(O. Miyazaki,
0.32-m
Newtonian);
16.48,
13.9,
1.2'
(T. Yusa,
0.05-m
Refractor + CCD);
15.86,
13.2,
1.4'
(W. Kutschera,
0.508-m
Newtonian);
15.72,
15.6,
0.43'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
15.61,
12.3,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
15.52,
13.8,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
15.06,
13.2,
2.7'
(T. Csorgei,
Chopin Observatory (MPC 247),
0.08-m
Refractor + CCD;
1.4'
tail in p.a. 82 deg);
14.69,
13.0,
2'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD;
2.6'
tail in p.a. 80 deg);
14.52,
13.8,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
14.42,
14.1,
1.3'
(Y. Nagai,
0.05-m
Refractor + CCD);
13.52,
13.8,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
12.52,
14.1,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
11.91,
13.4,
2.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
11.74,
13.5,
1.7'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
11.02,
14.0,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
10.53,
14.1,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
09.71,
13.4,
1.1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
09.55,
13.9,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD);
08.72,
13.5,
1.9'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
08.70,
13.5,
1'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
07.84,
12.4,
4.3'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.24° tail in p.a. 213 deg);
07.60,
13.3,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
07.52,
14.0,
1.4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
07.44,
13.8,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD);
06.82,
13.0,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
06.82,
13.1,
1.1'
(W. Kutschera,
0.508-m
Newtonian);
06.53,
13.4,
1.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
06.51,
13.9,
0.9'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
4'
tail in p.a. 240 deg);
06.49,
13.2,
2'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
8.2'
tail in p.a. 218 deg);
05.79,
12.6,
4.1'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
05.72,
12.7,
3.6'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.19° tail in p.a. 215 deg);
05.49,
13.6,
1'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
7.2'
tail in p.a. 222 deg);
04.77,
13.1,
1.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.77,
13.2,
2.1'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 89 deg);
04.76,
11.6,
3.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.2'
tail in p.a. 87 deg);
04.76,
12.7,
3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 83 deg);
04.75,
13.3,
3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 89 deg);
04.71,
12.8,
1.1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
0.6'
tail in p.a. 63 deg);
04.55,
13.7,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
04.40,
13.6,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD);
03.75,
14.2,
0.33'
(M. Filipek,
Jerzmanowice,
0.25-m
Newtonian + CCD);
03.74,
12.4,
1.2'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
03.53,
13.8,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD);
01.59,
12.6,
1.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
dec
31.80,
16.0,
0.4'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
0.5'
tail in p.a. 88 deg);
30.73,
13.5,
0.7'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
1'
tail in p.a. 98 deg);
30.53,
13.1,
1.6'
(T. Yusa,
0.05-m
Refractor + CCD);
29.82,
13.9,
0.3'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
0.4'
tail in p.a. 81 deg);
29.71,
12.4,
4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 80 deg);
28.94,
13.5,
1.1'
(M. Šrejber,
Hvezdarna a planetarium Hradec Kralove (MPC 048),
0.25-m
Newtonian + CCD;
1.6'
tail in p.a. 86 deg);
28.87,
11.7,
7.8'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.24° tail in p.a. 219 deg);
28.82,
12.6,
1.7'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
1'
tail in p.a. 106 deg);
28.77,
11.5,
4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.7'
tail in p.a. 81 deg);
28.76,
13.1,
3.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 80 deg);
28.76,
12.6,
3.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.9'
tail in p.a. 79 deg);
28.72,
12.7,
1.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.59,
12.5,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.52,
12.8,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
28.43,
13.8,
1'
(T. Yusa,
0.05-m
Refractor + CCD);
27.78,
12.9,
3.2'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 79 deg);
27.76,
11.0,
6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.9'
tail in p.a. 82 deg);
27.75,
12.8,
5.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 82 deg);
27.75,
11.9,
5.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1'
tail in p.a. 84 deg);
27.74,
13.0,
1.7'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
1.5'
tail in p.a. 87 deg);
27.62,
12.6,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.98,
13.3,
3.2'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
26.88,
11.9,
6.5'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.17° tail in p.a. 226 deg);
26.87,
13.7,
0.8'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
0.7'
tail in p.a. 88 deg);
26.84,
12.6,
1.7'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
26.81,
13.1,
0.8'
(M. Lombardo,
Zen Observatory, Scandicci (MPC M26),
0.3-m
Ritchey-Chretien + CCD);
26.75,
11.8,
4.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
6.7'
tail in p.a. 223 deg);
26.74,
12.7,
4.3'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
26.74,
12.9,
3.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.8'
tail in p.a. 223 deg);
26.74,
12.7,
4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.5'
tail in p.a. 78 deg);
26.72,
12.6,
1.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
26.58,
12.6,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
26.57,
12.9,
0.7'
(O. Miyazaki,
0.32-m
Newtonian);
26.54,
12.5,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.54,
13.0,
1.5'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
3.6'
tail in p.a. 225 deg);
25.79,
13.0,
1.6'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
1.7'
tail in p.a. 81 deg);
25.72,
12.2,
2.3'
(P. Dekelver,
0.3-m
Newtonian + CCD;
8.5'
tail in p.a. 217 deg);
242P/Spahr
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
27.07,
18.5,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
248P/Gibbs
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
20.64,
18.5,
0.38'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
2025
19.55,
18.4,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
07.71,
17.5,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
dec
28.87,
16.2,
0.3'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.2'
tail in p.a. 97 deg);
27.92,
18.6,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
276P/Vorobjov
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
13.13,
18.6,
--
(J. Maikner,
New Ringgold,
0.3-m
Hyperboloid astro-camera + CCD);
302P/Lemmon-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
18.82,
18.1,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.71,
17.5,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
450P/LONEOS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.55,
18.3,
0.25'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
22.13,
17.9,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
20.13,
18.4,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
06.88,
18.1,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
dec
31.06,
18.6,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
493P/LONEOS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
20.02,
18.1,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
18.07,
17.4,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
dec
30.98,
17.2,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
27.02,
17.0,
0.9'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
26.82,
17.5,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 224 deg);
26.11,
17.1,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
25.99,
17.3,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
495P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
26.02,
20.2,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
509P/Catalina
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
26.01,
18.8,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.53,
14.8,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
21.62,
14.7,
0.4'
(C. Wyatt,
0.4-m
Newtonian);
20.44,
14.6,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
19.68,
14.7,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
14.70,
15.0,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
13.66,
15.0,
1.1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
12.63,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
10.68,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
07.62,
14.5,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
07.59,
14.9,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
06.59,
14.9,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
03.67,
14.6,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.62,
14.5,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
01.56,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
dec
31.60,
14.7,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
31.59,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.60,
14.8,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.60,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.62,
14.7,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
27.70,
14.8,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.65,
14.7,
1'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
26.64,
14.6,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.51,
15.0,
1'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
20.06,
18.2,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
19.79,
17.7,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.79,
17.4,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.10,
18.1,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
10.27,
17.2,
0.32'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
dec
31.01,
17.0,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.79,
17.7,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.78,
17.4,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.82,
17.3,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
16.52,
16.0,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
2025
09.86,
15.6,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
dec
26.54,
15.5,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.72,
17.2,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
2025
18.89,
16.3,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.82,
17.0,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.79,
15.9,
1'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
3.1'
tail in p.a. 41 deg);
18.70,
16.9,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.3'
tail in p.a. 28 deg);
17.73,
16.7,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
17.73,
17.2,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
17.73,
15.8,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
05.86,
17.2,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
05.80,
16.0,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.19° tail in p.a. 34 deg);
04.83,
16.5,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.71,
16.7,
1.2'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
dec
28.83,
16.3,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.72,
16.9,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.72,
16.9,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.72,
16.1,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.73,
15.9,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.72,
16.8,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.72,
16.8,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.71,
15.9,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
6.5'
tail in p.a. 34 deg);
26.71,
16.6,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.5'
tail in p.a. 33 deg);
26.70,
16.9,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.3'
tail in p.a. 34 deg);
26.69,
16.1,
1.6'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
25.85,
16.4,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.54,
15.2,
0.5'
(Y. Nagai,
0.05-m
Refractor + CCD);
2025
23.47,
14.1,
1'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
21.94,
14.4,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3.9'
tail in p.a. 252 deg);
20.78,
14.9,
2.1'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
3.1'
tail in p.a. 251 deg);
20.51,
14.7,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
20.46,
14.6,
0.2'
(C. Wyatt,
0.4-m
Newtonian);
19.77,
14.1,
1.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.5'
tail in p.a. 250 deg);
19.76,
15.2,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 251 deg);
19.76,
15.2,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.1'
tail in p.a. 248 deg);
19.74,
14.0,
2.1'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
1.9'
tail in p.a. 259 deg);
18.99,
14.8,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.87,
14.4,
1.1'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.82,
14.0,
1.1'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.8'
tail in p.a. 231 deg);
18.81,
13.4,
0.9'
(W. Kutschera,
0.508-m
Newtonian);
18.76,
14.7,
2.7'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
2.4'
tail in p.a. 256 deg);
18.76,
14.5,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2'
tail in p.a. 248 deg);
18.76,
13.9,
1.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.8'
tail in p.a. 249 deg);
18.75,
14.7,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4.3'
tail in p.a. 252 deg);
18.74,
14.1,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
18.44,
14.5,
1.3'
(T. Yusa,
0.05-m
Refractor + CCD);
17.95,
14.2,
1'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.3'
tail in p.a. 254 deg);
17.80,
15.0,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.7'
tail in p.a. 248 deg);
17.80,
14.1,
1.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.8'
tail in p.a. 250 deg);
17.79,
15.0,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.9'
tail in p.a. 253 deg);
17.76,
14.3,
0.25'
(M. Filipek,
JerzmanowiceN2,
0.25-m
Newtonian + CCD);
17.74,
14.8,
2.7'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
2.5'
tail in p.a. 251 deg);
16.75,
14.3,
1.9'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
16.53,
14.9,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
15.70,
15.9,
0.43'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
14.56,
14.6,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
13.54,
14.5,
0.9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.4'
tail in p.a. 258 deg);
11.94,
14.2,
1.5'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
10.58,
14.6,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.3'
tail in p.a. 249 deg);
09.55,
14.5,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD);
08.76,
14.4,
1.9'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
08.76,
14.4,
1.3'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
8.1'
tail in p.a. 254 deg);
08.70,
13.9,
0.8'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
07.59,
14.5,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
3'
tail in p.a. 253 deg);
07.45,
15.0,
1.3'
(T. Yusa,
0.05-m
Refractor + CCD);
06.85,
14.0,
0.8'
(W. Kutschera,
0.508-m
Newtonian);
06.49,
14.3,
1.3'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
3.1'
tail in p.a. 253 deg);
04.98,
14.2,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.75,
14.2,
3.2'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
03.53,
14.1,
1'
(T. Yusa,
0.05-m
Refractor + CCD);
02.45,
13.8,
0.9'
(T. Yusa,
0.05-m
Refractor + CCD);
dec
29.73,
14.4,
3.2'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
29.57,
13.8,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.78,
14.7,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.3'
tail in p.a. 252 deg);
28.77,
14.5,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4.6'
tail in p.a. 250 deg);
28.58,
13.8,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.40,
14.2,
1'
(T. Yusa,
0.05-m
Refractor + CCD);
28.24,
13.9,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4.5'
tail in p.a. 250 deg);
27.58,
14.0,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.97,
14.4,
2.4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
3.6'
tail in p.a. 256 deg);
26.75,
14.2,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.1'
tail in p.a. 248 deg);
26.75,
14.4,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
6.7'
tail in p.a. 252 deg);
26.75,
14.3,
2.4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
26.60,
14.1,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.53,
14.4,
0.9'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
26.18,
13.4,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.6'
tail in p.a. 250 deg);
26.07,
14.0,
0.9'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.8'
tail in p.a. 256 deg);
C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.60,
14.4,
0.5'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
4.9'
tail in p.a. 254 deg);
2025
22.67,
14.8,
0.7'
(Y. Nagai,
0.05-m
Refractor + CCD);
22.17,
14.7,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5.2'
tail in p.a. 254 deg);
21.89,
13.9,
0.3'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
21.74,
14.7,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.64,
14.9,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
20.56,
14.7,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD;
5.1'
tail in p.a. 260 deg);
20.18,
15.8,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5.7'
tail in p.a. 250 deg);
19.81,
15.3,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.5'
tail in p.a. 254 deg);
19.74,
14.5,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
3.2'
tail in p.a. 257 deg);
18.99,
14.3,
0.7'
(W. Kutschera,
0.508-m
Newtonian + CCD);
18.97,
15.8,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.90,
14.6,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
18.79,
15.1,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.6'
tail in p.a. 255 deg);
18.22,
14.8,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.8'
tail in p.a. 262 deg);
17.80,
14.8,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4'
tail in p.a. 258 deg);
16.97,
14.7,
0.54'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
16.56,
15.1,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD;
1'
tail in p.a. 274 deg);
15.91,
15.4,
0.6'
(D. Heggie,
Edinburgh, Scotland,
0.05-m
Refractor + CCD;
0.8'
tail in p.a. 275 deg);
14.75,
14.8,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
14.60,
14.6,
0.6'
(Y. Nagai,
0.05-m
Refractor + CCD);
14.58,
14.7,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
13.70,
14.7,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.6'
tail in p.a. 264 deg);
12.68,
14.8,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 255 deg);
12.00,
14.8,
1.6'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
11.73,
14.6,
0.6'
(Y. Nagai,
0.05-m
Refractor + CCD);
10.73,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
6.6'
tail in p.a. 252 deg);
09.87,
14.6,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
09.58,
14.6,
1'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
07.02,
14.4,
2'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
06.91,
14.8,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5.2'
tail in p.a. 254 deg);
03.71,
14.8,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
03.56,
14.9,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
01.71,
15.0,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
dec
31.71,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
31.15,
14.8,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
8.8'
tail in p.a. 255 deg);
31.00,
15.0,
1'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.07° tail in p.a. 258 deg);
30.71,
15.1,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.09,
15.2,
0.7'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
9.3'
tail in p.a. 256 deg);
29.72,
15.1,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.96,
15.8,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.8'
tail in p.a. 257 deg);
28.95,
14.8,
0.8'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
2.8'
tail in p.a. 262 deg);
27.79,
14.8,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
27.14,
15.3,
0.5'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
27.00,
15.5,
2.4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
5.5'
tail in p.a. 256 deg);
26.88,
15.1,
0.5'
(P. Dekelver,
0.3-m
Newtonian + CCD;
6.8'
tail in p.a. 256 deg);
26.84,
15.7,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
6.7'
tail in p.a. 256 deg);
26.61,
15.4,
0.8'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
26.12,
14.9,
0.8'
(W. Kutschera,
0.508-m
Newtonian);
C/2022 R6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.57,
16.1,
0.42'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
22.15,
16.8,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
20.72,
15.8,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 245 deg);
18.99,
17.1,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
14.78,
16.1,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.1'
tail in p.a. 243 deg);
12.58,
16.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.5'
tail in p.a. 241 deg);
11.98,
17.0,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
10.61,
16.3,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
07.65,
16.3,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
03.69,
16.4,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.60,
16.3,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
dec
31.61,
16.6,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
31.13,
16.4,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
30.61,
16.7,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.06,
16.9,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
29.62,
17.0,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.99,
17.1,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.64,
16.6,
0.45'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
27.77,
16.7,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.67,
16.1,
0.45'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.56,
16.2,
0.47'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
21.92,
17.0,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
18.95,
16.9,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD);
17.92,
16.8,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.85,
17.0,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
dec
30.85,
17.6,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.78,
16.3,
0.3'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
26.89,
16.5,
0.5'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
26.72,
17.1,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.76,
16.6,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2023 F3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.59,
17.2,
0.25'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
dec
27.16,
17.9,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
26.13,
17.3,
0.24'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.72,
18.3,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.3'
tail in p.a. 325 deg);
2025
dec
28.78,
18.0,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 311 deg);
27.78,
17.8,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1'
tail in p.a. 299 deg);
26.72,
17.5,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.3'
tail in p.a. 299 deg);
C/2023 X2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
05.84,
18.4,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
2025
dec
26.83,
18.5,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
22.11,
16.8,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD;
4.7'
tail in p.a. 184 deg);
2025
20.16,
16.6,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.8'
tail in p.a. 185 deg);
19.78,
17.3,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.93,
17.3,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.86,
16.6,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
18.80,
17.2,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.50,
16.1,
0.4'
(T. Yusa,
0.05-m
Refractor + CCD);
18.19,
16.8,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD);
17.81,
16.8,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
16.78,
16.7,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
dec
31.10,
16.6,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
30.96,
16.4,
1.1'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.9'
tail in p.a. 213 deg);
30.08,
16.5,
0.8'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
3.1'
tail in p.a. 201 deg);
29.02,
16.3,
1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.17° tail in p.a. 197 deg);
28.94,
15.9,
0.5'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
28.79,
17.0,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.79,
16.7,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.93,
17.0,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
26.85,
16.7,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
26.81,
17.1,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.8'
tail in p.a. 212 deg);
C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.52,
6.8,
3'
(A. Pearce,
Geordie Bay, Rottnest Island, W. Australia,
0.05-m
Refractor + CCD;
14.6'
tail in p.a. 152 deg);
C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
30.09,
18.2,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2024 N4 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
27.25,
20.1,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2024 R4 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.71,
16.3,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 120 deg);
2025
19.70,
17.1,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.1'
tail in p.a. 119 deg);
19.70,
17.4,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 123 deg);
18.71,
17.2,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 121 deg);
17.72,
16.7,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.1'
tail in p.a. 111 deg);
17.72,
16.0,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.1'
tail in p.a. 107 deg);
17.71,
16.7,
0.5'
(J. Koukal,
Valasske,
0.5-m
Newtonian + CCD;
0.1'
tail in p.a. 112 deg);
04.79,
16.5,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
dec
30.77,
16.6,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
30.75,
16.5,
0.5'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.3'
tail in p.a. 116 deg);
28.78,
16.5,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.74,
16.5,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.3'
tail in p.a. 118 deg);
28.74,
16.8,
0.4'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.2'
tail in p.a. 114 deg);
28.73,
17.6,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 111 deg);
28.73,
17.1,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.1'
tail in p.a. 100 deg);
27.74,
17.2,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.74,
17.4,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 115 deg);
27.74,
16.8,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 115 deg);
26.78,
16.7,
0.2'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
26.71,
17.1,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 111 deg);
25.80,
16.3,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2024 T5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.49,
14.7,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
21.58,
15.1,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
20.61,
15.1,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
0.3'
tail in p.a. 246 deg);
19.61,
15.0,
0.55'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
19.59,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 228 deg);
18.61,
15.0,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
0.5'
tail in p.a. 223 deg);
18.14,
14.9,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
17.58,
15.1,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
0.3'
tail in p.a. 234 deg);
15.58,
15.0,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
14.60,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 227 deg);
14.58,
15.0,
0.55'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
13.64,
14.9,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 228 deg);
13.58,
15.2,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
12.61,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.8'
tail in p.a. 229 deg);
12.59,
15.3,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
10.65,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
10.59,
15.2,
0.6'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
07.56,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
06.59,
15.2,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
06.50,
15.0,
0.47'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
05.81,
15.1,
0.7'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.6'
tail in p.a. 229 deg);
03.65,
15.1,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.8'
tail in p.a. 243 deg);
01.55,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.8'
tail in p.a. 235 deg);
01.55,
15.3,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
dec
31.55,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
31.53,
15.1,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
30.59,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.58,
15.1,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.61,
15.2,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
27.64,
15.2,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.57,
15.2,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.50,
15.1,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
C/2025 A6 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.84,
8.7,
4'
(A. Pearce,
Geordie Bay, Rottnest Island, W. Australia,
0.05-m
Refractor + CCD);
23.13,
9.2,
3.5'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
6'
tail);
21.69,
9.0,
3.3'
(C. Wyatt,
15x70
Binoculars);
21.68,
8.8,
4.4'
(C. Wyatt,
0.4-m
Newtonian);
20.84,
9.3,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
5.8'
tail in p.a. 235 deg);
19.84,
9.3,
3.6'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
18.83,
9.3,
3.6'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
17.83,
9.2,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
8.4'
tail in p.a. 241 deg);
17.75,
8.7,
4'
(M. Mattiazzo,
Strathalbyn, South Australia,
15x70
Binoculars);
17.74,
8.6,
4.8'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
35.8'
tail in p.a. 61 deg);
15.83,
9.1,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
9.6'
tail in p.a. 244 deg);
14.83,
9.0,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
13.5'
tail in p.a. 242 deg);
13.83,
9.0,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
3.4'
tail in p.a. 228 deg);
13.34,
8.6,
7.8'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
12.83,
9.0,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
5.3'
tail in p.a. 237 deg);
11.35,
8.5,
6.4'
(K. Yoshimoto,
0.25-m
Newtonian + CCD;
50'
tail in p.a. 63 deg);
10.83,
8.8,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
5'
tail in p.a. 234 deg);
10.32,
8.4,
2.8'
(W. Souza,
0.05-m
Refractor + CCD);
07.83,
8.6,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
4.2'
tail in p.a. 235 deg);
06.83,
8.4,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
3.2'
tail in p.a. 235 deg);
05.83,
8.3,
4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
4.6'
tail in p.a. 236 deg);
04.83,
8.3,
3.8'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
4.2'
tail in p.a. 233 deg);
C/2025 J1 (Borisov)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
22.06,
16.6,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
20.09,
16.7,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
19.79,
17.0,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 33 deg);
18.91,
17.0,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.80,
17.2,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 35 deg);
18.12,
16.8,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.4'
tail in p.a. 40 deg);
01.83,
16.5,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
dec
30.92,
16.9,
0.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.4'
tail in p.a. 39 deg);
29.95,
16.8,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
28.98,
16.9,
0.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.9'
tail in p.a. 39 deg);
28.96,
17.5,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1'
tail in p.a. 35 deg);
28.87,
17.0,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
27.10,
16.8,
0.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.8'
tail in p.a. 42 deg);
26.77,
17.3,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 38 deg);
C/2025 K1-C
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.77,
18.1,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
2025
18.78,
18.9,
0.3'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
17.76,
18.1,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
16.44,
18.0,
0.17'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
12'
tail in p.a. 66 deg);
15.07,
17.9,
0.27'
(T. Csorgei,
Chopin Observatory (MPC 247),
0.08-m
Refractor + CCD);
11.86,
18.4,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
08.74,
17.1,
0.47'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
08.44,
18.2,
0.17'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
25'
tail in p.a. 72 deg);
06.45,
18.4,
0.17'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
25'
tail in p.a. 72 deg);
05.81,
17.9,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
05.44,
18.0,
0.17'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
25'
tail in p.a. 72 deg);
05.11,
18.0,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
04.74,
17.1,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
14'
tail in p.a. 72 deg);
04.74,
15.7,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
17.8'
tail in p.a. 72 deg);
04.73,
17.1,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
04.70,
17.0,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
18.8'
tail in p.a. 73 deg);
dec
29.75,
17.6,
0.4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
28.85,
16.3,
0.6'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
28.75,
16.5,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
18.6'
tail in p.a. 75 deg);
28.75,
15.5,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
28.3'
tail in p.a. 75 deg);
28.74,
16.7,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
24.7'
tail in p.a. 75 deg);
27.77,
15.6,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
26.5'
tail in p.a. 74 deg);
27.77,
14.9,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
16.3'
tail in p.a. 75 deg);
27.76,
17.8,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
27.76,
16.1,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
22.9'
tail in p.a. 74 deg);
26.95,
18.4,
0.4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
26.74,
15.0,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
15.1'
tail in p.a. 75 deg);
26.73,
15.2,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
12.9'
tail in p.a. 75 deg);
26.73,
15.8,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
19.8'
tail in p.a. 76 deg);
26.72,
18.5,
0.4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
25.83,
15.5,
0.5'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
16'
tail in p.a. 77 deg);
C/2025 K1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
20.79,
17.6,
0.7'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
3.2'
tail in p.a. 65 deg);
2025
20.77,
14.6,
0.2'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
19.77,
18.6,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
3.6'
tail in p.a. 66 deg);
19.73,
18.3,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
6.2'
tail in p.a. 66 deg);
18.78,
18.4,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
4.5'
tail in p.a. 70 deg);
18.72,
17.8,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
19.3'
tail in p.a. 69 deg);
17.76,
18.1,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
3.9'
tail in p.a. 71 deg);
17.74,
18.5,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
14.9'
tail in p.a. 68 deg);
16.75,
14.0,
0.4'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
16.44,
18.3,
0.17'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
12'
tail in p.a. 66 deg);
15.74,
14.0,
0.4'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
15.07,
16.8,
0.5'
(T. Csorgei,
Chopin Observatory (MPC 247),
0.08-m
Refractor + CCD;
7.9'
tail in p.a. 70 deg);
11.92,
13.4,
0.8'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
11.86,
18.2,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
10.14,
17.6,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
8'
tail in p.a. 70 deg);
08.74,
17.5,
0.5'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
14.5'
tail in p.a. 70 deg);
08.44,
17.9,
0.17'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
25'
tail in p.a. 72 deg);
07.78,
15.8,
1.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.15° tail in p.a. 72 deg);
06.79,
17.5,
0.3'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
22.1'
tail in p.a. 72 deg);
06.45,
18.2,
0.17'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
25'
tail in p.a. 72 deg);
05.81,
17.8,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
05.78,
16.0,
1'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.39° tail in p.a. 72 deg);
05.44,
18.1,
0.17'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
25'
tail in p.a. 72 deg);
05.11,
17.4,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
04.74,
17.7,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
04.74,
16.5,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
04.73,
16.9,
0.7'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
5.3'
tail in p.a. 73 deg);
04.70,
17.8,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.1'
tail in p.a. 59 deg);
dec
31.81,
17.7,
0.15'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
2.6'
tail in p.a. 71 deg);
31.48,
16.8,
0.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
20'
tail in p.a. 75 deg);
30.83,
15.1,
1.2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.4° tail in p.a. 74 deg);
30.81,
17.7,
0.2'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
5'
tail in p.a. 77 deg);
30.54,
15.4,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD;
10'
tail in p.a. 73 deg);
30.43,
16.4,
0.4'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
20'
tail in p.a. 74 deg);
29.76,
17.1,
0.2'
(D. Heggie,
ASERO, Valdin,
0.303-m
Newtonian + CCD;
7'
tail in p.a. 76 deg);
29.75,
16.1,
0.8'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
5.1'
tail in p.a. 75 deg);
28.89,
15.9,
0.7'
(M. Šrejber,
Hvezdarna a planetarium Hradec Kralove (MPC 048),
0.25-m
Newtonian + CCD);
28.85,
18.1,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
28.83,
14.6,
1.7'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.49° tail in p.a. 76 deg);
28.75,
16.8,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.75,
17.8,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.74,
11.6,
2.5'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
28.74,
17.4,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.45,
15.2,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD;
10.5'
tail in p.a. 80 deg);
27.77,
17.9,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.77,
17.3,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.76,
16.5,
0.8'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
8.3'
tail in p.a. 75 deg);
27.76,
17.5,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.75,
16.3,
0.4'
(M. Mašek,
Ondrejov (MPC 557),
0.3-m
Newtonian + CCD;
13.8'
tail in p.a. 74 deg);
26.95,
17.1,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
7.3'
tail in p.a. 74 deg);
26.93,
14.0,
2.6'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.48° tail in p.a. 76 deg);
26.74,
16.1,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.73,
14.8,
0.9'
(M. Šrejber,
Hvezdarna a planetarium Hradec Kralove (MPC 048),
0.25-m
Newtonian + CCD;
10.5'
tail in p.a. 75 deg);
26.73,
17.3,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.73,
17.1,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.72,
16.5,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
6.8'
tail in p.a. 78 deg);
26.40,
15.8,
0.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
15'
tail in p.a. 77 deg);
25.78,
12.0,
1.8'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
C/2025 L1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
21.55,
16.3,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
20.83,
15.5,
0.6'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
18.81,
15.7,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
17.79,
15.8,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
15.80,
15.7,
0.55'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
14.80,
15.6,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
13.80,
15.5,
0.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
C/2025 N1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
14.21,
14.2,
0.8'
(N. Barnes,
PAT,
0.3-m
Newtonian + CCD;
1.1'
tail in p.a. 106 deg);
2025
14.21,
14.5,
0.9'
(N. Barnes,
Paulton,
0.305-m
Newtonian + CCD;
0.2'
tail in p.a. 115 deg);
11.94,
13.4,
0.9'
(M. Lombardo,
Zen Observatory, Scandicci (MPC M26),
0.3-m
Ritchey-Chretien + CCD;
3.7'
tail in p.a. 102 deg);
10.26,
13.4,
1.5'
(N. Barnes,
PAT,
0.3-m
Newtonian + CCD;
2.3'
tail in p.a. 103 deg);
10.26,
13.6,
1.5'
(N. Barnes,
Paulton,
0.305-m
Newtonian + CCD;
2.2'
tail in p.a. 103 deg);
04.16,
14.2,
0.8'
(N. Barnes,
Paulton,
0.305-m
Newtonian + CCD;
0.4'
tail in p.a. 107 deg);
dec
31.99,
12.8,
1.6'
(A. Valvasori,
0.3-m
Newtonian + CCD);
30.11,
12.7,
1.5'
(H. Smith,
0.3-m
Newtonian + CCD);
30.03,
12.4,
1.3'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
29.19,
11.2,
2.1'
(À. Bueno,
Tevinca,
0.073-m
Refractor + CCD);
29.04,
11.9,
1.2'
(M. Lombardo,
Zen Observatory, Scandicci (MPC M26),
0.3-m
Ritchey-Chretien + CCD;
6'
tail in p.a. 108 deg);
27.23,
13.5,
1.2'
(N. Barnes,
Paulton,
0.305-m
Newtonian + CCD;
1.2'
tail in p.a. 107 deg);
27.06,
11.9,
1.2'
(M. Lombardo,
Zen Observatory, Scandicci (MPC M26),
0.3-m
Ritchey-Chretien + CCD;
1.9'
tail in p.a. 103 deg);
C/2025 Q3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.49,
15.4,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
2025
19.89,
16.6,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
19.74,
16.8,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 52 deg);
19.57,
15.9,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
18.74,
16.3,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 50 deg);
17.75,
16.5,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 55 deg);
14.54,
16.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
13.56,
15.8,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 52 deg);
12.62,
15.7,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
11.89,
16.4,
0.4'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
07.57,
16.3,
0.35'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
06.48,
16.1,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
dec
31.56,
15.9,
0.45'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.55,
15.9,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.55,
15.8,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.56,
15.9,
0.45'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
27.79,
16.5,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.56,
15.8,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.82,
15.8,
0.5'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
26.81,
16.4,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.78,
16.0,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
26.58,
16.1,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
26.52,
16.0,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
25.91,
16.3,
0.4'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2025 R2 (SWAN)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
21.87,
17.5,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
2025
19.74,
16.4,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
19.74,
14.6,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
19.73,
16.1,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.9'
tail in p.a. 248 deg);
18.87,
16.8,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD);
18.84,
16.1,
1.2'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.73,
15.9,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.73,
14.2,
2.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.72,
15.8,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.2'
tail in p.a. 245 deg);
17.76,
13.6,
3.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
17.75,
15.3,
2.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
17.75,
15.8,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
15.73,
,
--
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
09.54,
14.7,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
07.41,
14.8,
1'
(T. Yusa,
0.05-m
Refractor + CCD);
05.75,
13.8,
3.9'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.12° tail in p.a. 245 deg);
05.49,
15.1,
1.1'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
05.12,
13.4,
2.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
04.92,
16.2,
0.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.75,
13.3,
2.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.1'
tail in p.a. 62 deg);
04.75,
15.5,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
04.74,
15.4,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.4'
tail in p.a. 248 deg);
04.44,
14.3,
1.2'
(T. Yusa,
0.05-m
Refractor + CCD);
02.43,
13.9,
1.3'
(T. Yusa,
0.05-m
Refractor + CCD);
dec
30.92,
16.7,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
30.87,
14.9,
1.5'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
1.2'
tail in p.a. 66 deg);
30.68,
14.7,
2'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
27.72,
14.8,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.71,
14.6,
3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.3'
tail in p.a. 64 deg);
27.71,
14.4,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.52,
13.3,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
26.70,
13.7,
3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4.7'
tail in p.a. 241 deg);
26.69,
14.1,
3.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 66 deg);
26.52,
13.8,
2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD);
26.48,
14.1,
1.8'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
25.99,
16.6,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD);
25.77,
12.8,
1.8'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
25.74,
13.4,
2.9'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD);
C/2025 R3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
19.71,
15.3,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 50 deg);
2025
18.81,
15.3,
0.9'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
18.72,
16.0,
0.4'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
18.70,
16.1,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
17.78,
16.4,
0.8'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
17.71,
16.4,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
17.71,
15.1,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
17.70,
15.7,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
16.77,
14.2,
1.8'
(W. Kutschera,
0.76-m
Newtonian);
15.09,
14.0,
2.5'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
14.06,
13.9,
3'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
12.79,
15.7,
0.6'
(A. Pearce,
Skygems Observatory, Fregenal da la Sierra, Spain,
0.3-m
Newtonian + CCD);
11.84,
16.2,
0.9'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
08.55,
16.7,
1'
(J. Xiong,
Xingyuan Obs (MPC Code:O40),
0.252-m
Newtonian + CCD);
07.52,
16.7,
1'
(J. Xiong,
Xingyuan Obs (MPC Code:O40),
0.252-m
Newtonian + CCD);
06.50,
16.9,
0.3'
(J. Xiong,
Xingyuan Obs (MPC Code:O40),
0.252-m
Newtonian + CCD);
06.42,
17.2,
0.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
05.89,
16.2,
0.8'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
dec
30.81,
17.9,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
30.79,
16.7,
0.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.2'
tail in p.a. 72 deg);
28.80,
17.5,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.78,
14.8,
2.9'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD);
26.80,
17.6,
0.3'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
25.83,
17.8,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2025 T1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
20.08,
10.8,
1.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
2025
18.08,
10.8,
1.8'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
12.08,
10.7,
2.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
08.66,
10.7,
3.9'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
06.38,
10.9,
0.9'
(Y. Nagai,
0.05-m
Refractor + CCD);
05.75,
10.9,
1.5'
(P. Carson,
PGC, Fregenal de la Sierra,
0.315-m
Cassegrain reflector + CCD);
05.71,
10.3,
5.7'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.12° tail in p.a. 286 deg);
05.08,
10.1,
3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
04.72,
9.9,
2.4'
(M. Meyer,
0.254-m
Newtonian);
04.35,
10.9,
2.4'
(T. Yusa,
0.05-m
Refractor + CCD);
dec
30.74,
13.2,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD;
4.3'
tail in p.a. 42 deg);
30.73,
9.6,
2'
(U. Pilz,
0.12-m
Refractor);
30.71,
10.0,
5.6'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.08° tail in p.a. 38 deg);
30.68,
9.9,
3.3'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD);
30.65,
10.2,
3.7'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
29.38,
10.6,
1.6'
(Y. Nagai,
0.05-m
Refractor + CCD);
28.74,
10.5,
2.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.71,
10.9,
4.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.3'
tail in p.a. 35 deg);
28.71,
10.8,
3.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.7'
tail in p.a. 33 deg);
28.71,
9.5,
5.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
28.70,
9.9,
6.3'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.09° tail in p.a. 38 deg);
28.36,
10.8,
1.8'
(T. Yusa,
0.05-m
Refractor + CCD);
27.73,
10.1,
1.9'
(A. Kammerer,
Voelkersbach, Germany,
0.397-m
Newtonian);
27.71,
11.2,
4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.8'
tail in p.a. 38 deg);
27.70,
10.0,
5.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.3'
tail in p.a. 36 deg);
27.70,
10.8,
5.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 38 deg);
27.69,
10.9,
1.1'
(M. Mašek,
Ondrejov (MPC 557),
0.3-m
Newtonian + CCD);
26.74,
10.6,
2.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
26.69,
10.6,
5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.3'
tail in p.a. 37 deg);
26.68,
10.9,
4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.6'
tail in p.a. 38 deg);
26.68,
9.6,
5.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.1'
tail in p.a. 41 deg);
26.68,
10.1,
3.3'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD);
26.38,
10.8,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
25.69,
10.4,
2.9'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.08-m
Refractor + CCD;
1.8'
tail in p.a. 34 deg);
C/2025 V2 (Rankin)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
dec
31.04,
18.9,
0.3'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
27.15,
19.5,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2026 A1 (MAPS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
23.54,
17.5,
0.47'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
20.61,
17.8,
0.5'
(A. Pearce,
Perth Observatory, Bickley (MPC 323),
0.35-m
Schmidt-Cassegrain + CCD);
20.02,
18.0,
4'
(J. Maikner,
New Ringgold,
0.3-m
Hyperboloid astro-camera + CCD;
0.2'
tail in p.a. 50 deg);
19.65,
18.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley (MPC 323),
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 49 deg);
19.46,
18.0,
0.55'
(T. Lovejoy,
iTelescope Observatory, Siding Spring,
0.43-m
Newtonian + CCD;
0.3'
tail in p.a. 44 deg);
18.58,
18.1,
--
(G. van Buitenen,
Siding Spring, AU (Q62),
0.51-m
Ritchey-Chretien + CCD);
17.54,
18.1,
0.47'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
14.62,
18.0,
0.45'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.3'
tail in p.a. 51 deg);
A/2025 Y1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
18.20,
18.1,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
P/2015 TO19 (Lemmon-PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
09.04,
20.6,
--
(P. Traverse,
Observatoire SADR, Poroto,
0.355-m
Newtonian + CCD);
P/2017 B4 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
jan
20.30,
20.4,
--
(J. Maikner,
New Ringgold,
0.3-m
Hyperboloid astro-camera + CCD);