4P/Faye
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
21.12,
19.2,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
12P/Pons-Brooks
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
26.05,
18.5,
--
(G. Pappa,
Piemonte,Italy (remote control),
0.2-m
Newtonian + CCD);
   
21.35,
18.5,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
   
18.79,
18.8,
--
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
19P/Borrelly
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
16.25,
19.6,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD;
4'
tail in p.a. 305 deg);
   
15.25,
19.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
27.91,
14.2,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
25.85,
16.2,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
   
22.87,
16.3,
0.34'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
   
22.80,
16.3,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
   
21.89,
13.0,
4.3'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
18.84,
13.8,
2.5'
(P. Lívanec,
0.102-m
Refractor + CCD);
   
18.81,
16.4,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
   
17.97,
13.3,
3.01'
(K. Hills,
0.5-m
Newtonian + CCD);
   
16.86,
12.6,
3'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
15.89,
12.3,
5.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
15.85,
12.7,
4.7'
(K. Hills,
0.5-m
Newtonian + CCD);
   
14.89,
12.5,
5.3'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
13.94,
13.3,
1.5'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
12.89,
13.3,
2'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
11.97,
16.0,
0.56'
(K. Hills,
0.5-m
Newtonian + CCD);
   
05.86,
14.0,
2'
(G. Pappa,
Piemonte,Italy (remote control),
0.2-m
Ritchey-Chretien + CCD);
feb
28.81,
13.2,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
44P/Reinmuth
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
14.89,
19.2,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
48P/Johnson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
27.27,
20.7,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
   
21.22,
21.3,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
61P/Shajn-Schaldach
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
15.87,
19.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
12.06,
18.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
77P/Longmore
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.05,
14.2,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1'
tail in p.a. 307 deg);
   
24.15,
14.9,
0.75'
(K. Hills,
0.5-m
Newtonian + CCD);
   
18.65,
14.9,
0.8'
(C. Wyatt,
0.4-m
Newtonian);
   
18.09,
15.7,
0.29'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
16.47,
15.1,
0.3'
(C. Wyatt,
0.4-m
Newtonian);
   
16.10,
15.0,
0.75'
(K. Hills,
0.5-m
Newtonian + CCD);
   
15.49,
14.9,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
   
15.04,
15.7,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
03.93,
15.4,
0.4'
(G. Pappa,
Namibia (remote control),
0.5-m
Prime focus of a reflector + CCD);
   
03.16,
15.5,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
02.14,
15.3,
1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.4'
tail in p.a. 292 deg);
   
01.18,
15.3,
0.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
01.14,
15.1,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1'
tail in p.a. 304 deg);
80P/Peters-Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
21.40,
17.9,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
81P/Wild
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.11,
13.6,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
22.11,
13.6,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
21.77,
12.6,
1'
(O. Miyazaki,
0.32-m
Newtonian);
   
19.80,
12.6,
0.7'
(O. Miyazaki,
0.32-m
Newtonian);
   
19.10,
13.5,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
18.80,
12.1,
0.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
18.68,
13.9,
0.6'
(C. Wyatt,
0.4-m
Newtonian;
2.8'
tail in p.a. 270 deg);
   
17.09,
13.3,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
16.16,
12.8,
2.3'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.05° tail in p.a. 271 deg);
   
02.01,
12.0,
0.5'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
5'
tail);
   
01.20,
11.3,
5.3'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
feb
28.76,
12.6,
1.5'
(K. Harikae,
0.15-m
Newtonian + CCD);
89P/Russell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.91,
20.3,
--
(G. Pappa,
Piemonte,Italy (remote control),
0.3-m
Newtonian + CCD);
   
21.30,
20.9,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
94P/Russell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.01,
17.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.91,
18.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
05.85,
16.9,
--
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
96P/Machholz
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
21.38,
15.6,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
   
08.15,
14.2,
1'
(G. Pappa,
Namibia (remote control),
0.36-m
Ritchey-Chretien + CCD);
   
07.15,
14.0,
1'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
   
03.16,
13.5,
1'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
feb
28.80,
11.7,
1.8'
(K. Harikae,
0.15-m
Newtonian + CCD);
99P/Kowal
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
20.19,
17.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
107P/Wilson-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
12.86,
19.3,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
113P/Spitaler
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
12.93,
19.4,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
118P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
27.94,
15.1,
1.2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
25.86,
16.3,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
   
24.90,
15.2,
1.5'
(K. Hills,
0.5-m
Newtonian + CCD);
   
22.81,
16.3,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
   
16.85,
14.2,
1.5'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
15.92,
13.6,
4.6'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.08° tail in p.a. 269 deg);
   
14.91,
15.0,
1.5'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
12.89,
14.3,
1.2'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
11.95,
13.9,
3'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
1.8'
tail in p.a. 239 deg);
   
11.92,
13.8,
3.7'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.09° tail in p.a. 268 deg);
   
10.89,
16.3,
0.56'
(K. Hills,
0.5-m
Newtonian + CCD);
   
07.86,
15.5,
0.3'
(D. Heggie,
Edinburgh,
0.13-m
Newtonian + CCD);
   
02.82,
15.0,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.80,
14.0,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
feb
28.89,
14.0,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
28.87,
13.2,
4.3'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.06° tail in p.a. 266 deg);
119P/Parker-Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
25.84,
16.0,
0.1'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
23.90,
16.0,
0.94'
(K. Hills,
0.5-m
Newtonian + CCD);
   
15.91,
16.2,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
12.91,
15.4,
0.8'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
09.99,
16.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
08.94,
17.0,
0.44'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
   
05.86,
15.4,
--
(G. Pappa,
Piemonte,Italy (remote control),
0.2-m
Ritchey-Chretien + CCD);
129P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.83,
18.5,
--
(G. Pappa,
Piemonte,Italy (remote control),
0.2-m
Newtonian + CCD);
   
01.08,
19.3,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
169P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
21.16,
19.8,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
179P/Jedicke
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
10.87,
19.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
180P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
11.02,
18.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
199P/Shoemaker
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
05.16,
17.2,
--
(G. Pappa,
Namibia (remote control),
0.5-m
Prime focus of a reflector + CCD);
204P/LINEAR-NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
23.02,
18.5,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
15.99,
16.6,
0.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
12.95,
18.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
02.07,
16.9,
0.6'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
01.93,
16.4,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.01,
16.3,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
211P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.05,
19.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
16.15,
18.6,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
   
13.99,
18.5,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
219P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
04.27,
18.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
237P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
25.12,
12.8,
--
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
   
22.18,
12.6,
0.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
18.69,
13.9,
0.2'
(C. Wyatt,
0.4-m
Newtonian);
   
02.04,
14.0,
--
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
244P/Scotti
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.85,
18.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
22.79,
17.8,
0.34'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
   
19.85,
17.7,
0.33'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
   
12.91,
15.9,
0.5'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
256P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.20,
20.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
01.30,
19.7,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
263P/Gibbs
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
20.20,
17.3,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD;
1'
tail in p.a. 185 deg);
   
18.68,
17.1,
0.3'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
0.5'
tail in p.a. 255 deg);
   
17.99,
17.2,
0.19'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
16.03,
17.2,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
14.04,
16.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
03.00,
16.2,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
02.02,
16.3,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.10,
16.5,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.7'
tail in p.a. 270 deg);
   
01.07,
17.2,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
299P/Catalina-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
22.98,
19.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.96,
19.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
364P/PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.09,
13.7,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.5'
tail in p.a. 252 deg);
   
27.12,
13.9,
--
(G. Pappa,
Piemonte,Italy (remote control),
0.2-m
Newtonian + CCD);
   
27.03,
12.6,
2.5'
(J. Gonzalez Suarez,
Alto del Trichero, 1190 m, Leon, Spain,
0.203-m
Schmidt-Cassegrain);
   
25.93,
14.3,
0.3'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
25.90,
14.9,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
   
18.75,
15.1,
0.4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
1.6'
tail in p.a. 255 deg);
   
18.66,
15.0,
0.3'
(C. Wyatt,
0.4-m
Newtonian);
   
17.94,
15.9,
0.19'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
2.3'
tail in p.a. 257 deg);
   
16.00,
15.0,
1.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.05° tail in p.a. 254 deg);
   
15.00,
15.7,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
14.05,
15.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.11,
15.5,
1.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
1.7'
tail in p.a. 257 deg);
   
02.04,
16.4,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.7'
tail in p.a. 265 deg);
   
01.12,
16.8,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.6'
tail in p.a. 274 deg);
   
01.08,
16.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
402P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
23.99,
18.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.07,
18.3,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
408P/Novichonok-Gerke
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
04.87,
16.9,
--
(G. Pappa,
Piemonte,Italy (remote control),
0.2-m
Ritchey-Chretien + CCD);
423P/Lemmon
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
27.14,
22.5,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
451P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
01.11,
19.7,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
452P/Sheppard-Jewitt
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
23.01,
19.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
20.11,
19.5,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD;
2.5'
tail in p.a. 205 deg);
   
12.97,
19.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
11.76,
17.4,
0.2'
(G. Pappa,
Namibia (remote control),
0.5-m
Prime focus of a reflector + CCD);
C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
23.92,
9.4,
2'
(J. de Souza Aguiar,
25x100
Binoculars);
   
21.93,
9.4,
2'
(J. de Souza Aguiar,
25x100
Binoculars);
   
19.94,
9.3,
2'
(A. Amorim,
0.09-m
Refractor);
   
19.93,
9.3,
2'
(J. de Souza Aguiar,
25x100
Binoculars);
   
18.94,
9.1,
2'
(A. Amorim,
0.09-m
Refractor);
   
18.92,
9.3,
2'
(J. de Souza Aguiar,
25x100
Binoculars);
   
18.43,
9.1,
7.5'
(C. Wyatt,
15x70
Binoculars;
15'
tail in p.a. 214 deg);
   
17.99,
9.0,
--
(A. Amorim,
0.09-m
Refractor);
   
16.95,
9.0,
2'
(A. Amorim,
0.09-m
Refractor);
   
16.92,
9.2,
2'
(J. de Souza Aguiar,
25x100
Binoculars);
   
16.40,
9.2,
9'
(C. Wyatt,
15x70
Binoculars;
21'
tail in p.a. 199 deg);
   
15.39,
8.9,
8.5'
(C. Wyatt,
15x70
Binoculars);
   
14.04,
9.0,
--
(A. Amorim,
0.09-m
Refractor);
   
12.80,
9.0,
3'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
30'
tail);
   
11.95,
9.0,
2'
(A. Amorim,
0.09-m
Refractor);
   
10.77,
8.8,
16'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.85° tail in p.a. 214 deg);
   
06.93,
8.7,
3'
(J. de Souza Aguiar,
25x100
Binoculars);
   
02.78,
8.7,
13'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.81° tail in p.a. 220 deg);
feb
28.96,
8.9,
2'
(A. Amorim,
0.09-m
Refractor);
   
28.78,
8.6,
3'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
21'
tail);
C/2019 E3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
05.84,
16.8,
--
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
C/2019 K7 (SMITH)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.17,
18.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
16.18,
18.7,
--
(J. Maikner,
Comet Hunter Observatory 2,
0.305-m
Hyperboloid astro-camera + CCD);
   
12.12,
18.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2019 L3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
23.99,
12.0,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
21.99,
11.9,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
19.52,
11.3,
0.9'
(O. Miyazaki,
0.32-m
Newtonian);
   
18.98,
11.8,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
18.45,
12.0,
2'
(C. Wyatt,
0.4-m
Newtonian);
   
16.98,
11.7,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
16.46,
12.0,
2.3'
(C. Wyatt,
0.4-m
Newtonian);
   
15.97,
11.9,
1.7'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
15.53,
10.9,
0.9'
(O. Miyazaki,
0.32-m
Newtonian);
   
15.46,
11.9,
2.6'
(C. Wyatt,
0.4-m
Newtonian);
   
14.54,
11.0,
0.9'
(O. Miyazaki,
0.32-m
Newtonian);
   
11.98,
12.6,
1.5'
(K. Hills,
0.5-m
Newtonian + CCD);
   
11.82,
11.4,
5.4'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.24° tail in p.a. 339 deg);
   
05.61,
12.5,
1.2'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
01.90,
11.7,
2'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
C/2019 O3
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
20.20,
17.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
10.24,
17.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
03.17,
17.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.07,
12.6,
4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
14.2'
tail in p.a. 241 deg);
   
26.95,
12.7,
1'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
25.94,
13.7,
0.6'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
24.17,
12.3,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
21.75,
13.2,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
   
19.79,
12.9,
0.7'
(O. Miyazaki,
0.32-m
Newtonian);
   
19.18,
12.0,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
19.12,
11.8,
1.8'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
18.79,
12.2,
1.1'
(O. Miyazaki,
0.32-m
Newtonian);
   
18.67,
13.0,
1.9'
(C. Wyatt,
0.4-m
Newtonian);
   
18.00,
14.0,
0.48'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
6'
tail in p.a. 242 deg);
   
16.13,
13.1,
1.5'
(K. Hills,
0.5-m
Newtonian + CCD);
   
16.09,
12.7,
4.9'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.18° tail in p.a. 240 deg);
   
16.05,
13.1,
1.7'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
03.02,
12.9,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
02.10,
12.8,
0.75'
(K. Hills,
0.5-m
Newtonian + CCD);
   
02.06,
12.7,
4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
11.4'
tail in p.a. 241 deg);
   
01.99,
12.5,
1'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
   
01.22,
13.6,
0.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
01.16,
13.0,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD;
9.4'
tail in p.a. 244 deg);
feb
28.81,
12.6,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
   
28.75,
13.2,
2'
(K. Harikae,
0.15-m
Newtonian + CCD);
C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.02,
11.9,
4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
11.6'
tail in p.a. 48 deg);
   
27.08,
10.3,
6'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
26.94,
11.4,
2'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian;
4'
tail in p.a. 45 deg);
   
25.96,
11.5,
1.5'
(V. Díaz,
La Romana, Alicante, Spain,
0.25-m
Newtonian);
   
25.92,
12.4,
1'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
25.88,
14.4,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
   
24.83,
11.5,
2.7'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
24.14,
12.0,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
23.92,
12.9,
0.8'
(M. Dionisi,
Sassari,
0.25-m
Newtonian + CCD;
6'
tail in p.a. 45 deg);
   
22.79,
12.7,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
   
22.13,
12.0,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
21.17,
11.6,
1.5'
(M. Goiato,
0.22-m
Newtonian);
   
19.84,
11.0,
1.5'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
19.55,
11.9,
0.9'
(O. Miyazaki,
0.32-m
Newtonian);
   
19.14,
11.9,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
19.10,
11.5,
2'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
18.83,
11.8,
0.8'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
18.66,
12.4,
1.3'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
15'
tail in p.a. 43 deg);
   
18.44,
12.2,
1.5'
(C. Wyatt,
0.4-m
Newtonian;
5.6'
tail in p.a. 53 deg);
   
18.07,
13.2,
0.72'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
7.7'
tail in p.a. 57 deg);
   
17.97,
11.5,
0.7'
(M. Kwinta,
0.3-m
Newtonian);
   
17.78,
12.2,
1'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
17.13,
11.8,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
16.46,
12.1,
1.3'
(C. Wyatt,
0.4-m
Newtonian);
   
16.05,
12.0,
4.9'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.18° tail in p.a. 44 deg);
   
15.89,
10.5,
6'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
15.55,
11.7,
1.3'
(O. Miyazaki,
0.32-m
Newtonian);
   
15.45,
12.2,
2'
(C. Wyatt,
0.4-m
Newtonian);
   
14.98,
12.2,
1.7'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
14.55,
11.8,
1.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
14.00,
12.0,
2.44'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.08,
12.1,
3.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.09° tail in p.a. 45 deg);
   
07.17,
11.4,
1'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
   
02.97,
11.8,
4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
7.2'
tail in p.a. 40 deg);
   
02.10,
12.4,
3.6'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.11° tail in p.a. 43 deg);
   
01.98,
11.6,
4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
9.4'
tail in p.a. 41 deg);
   
01.16,
12.5,
2.3'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
01.05,
12.0,
4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
7.2'
tail in p.a. 38 deg);
feb
28.97,
12.6,
2.4'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.15° tail in p.a. 39 deg);
   
28.80,
11.7,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
   
28.75,
11.9,
2'
(K. Harikae,
0.15-m
Newtonian + CCD);
C/2020 F2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.14,
17.5,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
14.03,
17.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
01.06,
17.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2020 H6 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
20.22,
18.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
10.26,
18.2,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2020 J1 (SONEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.03,
19.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.08,
19.2,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.28,
13.1,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
19.28,
12.9,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
18.69,
13.3,
0.9'
(C. Wyatt,
0.4-m
Newtonian);
   
17.27,
12.7,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
05.17,
12.0,
1'
(G. Pappa,
Namibia (remote control),
0.5-m
Prime focus of a reflector + CCD);
   
02.14,
13.2,
1.8'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.04° tail in p.a. 337 deg);
C/2020 R7 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.11,
15.2,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
22.16,
15.9,
0.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
20.26,
15.1,
0.94'
(K. Hills,
0.5-m
Newtonian + CCD);
   
18.06,
16.5,
0.29'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
02.13,
15.6,
0.9'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
1.9'
tail in p.a. 183 deg);
C/2020 S4 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.00,
14.7,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
25.86,
15.5,
0.3'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
22.98,
16.4,
0.56'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
   
15.96,
14.4,
2.1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
2.4'
tail in p.a. 262 deg);
   
14.94,
15.7,
0.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
12.94,
15.4,
0.56'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.90,
14.8,
1'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
11.99,
15.4,
1.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
2'
tail in p.a. 261 deg);
   
02.88,
14.4,
1.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
02.03,
15.1,
1.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
01.87,
14.5,
1.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.84,
15.1,
1.5'
(M. Lošťák,
0.2-m
Newtonian + CCD);
feb
28.94,
14.6,
2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
26.86,
9.8,
3'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
25.80,
10.3,
1.8'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
24.83,
10.0,
2.8'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
22.77,
9.5,
1.3'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
19.82,
9.8,
2.7'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
18.83,
9.5,
5.2'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD;
10'
tail in p.a. 22 deg);
   
18.79,
9.4,
2'
(U. Pilz,
0.32-m
Newtonian;
0.07° tail in p.a. 50 deg);
   
18.77,
10.4,
1.8'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
17.80,
10.5,
1.1'
(M. Kwinta,
0.3-m
Newtonian);
   
17.79,
12.3,
0.58'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
5.6'
tail in p.a. 30 deg);
   
17.77,
10.3,
1.8'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
16.87,
10.2,
2'
(V. Díaz,
La Romana, Alicante, Spain,
0.15-m
Newtonian);
   
16.85,
10.5,
1'
(M. Filipek,
0.4-m
Newtonian);
   
16.84,
10.4,
3'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
7.2'
tail in p.a. 23 deg);
   
16.81,
10.2,
1.2'
(M. Kwinta,
0.3-m
Newtonian);
   
16.80,
+11.3,
3'
(V. Bahyl,
Julia Observatory, Zvolenská Slatina, Slovakia, Europe,
0.254-m
Schmidt-Cassegrain + CCD;
3'
tail in p.a. 90 deg);
   
15.89,
10.3,
2.3'
(W. Kutschera,
0.08-m
Refractor;
4.8'
tail);
   
15.85,
9.7,
3.5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain;
0.1° tail in p.a. 20 deg);
   
15.84,
10.1,
5.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
15.84,
9.7,
12'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.19° tail in p.a. 20 deg);
   
15.82,
10.0,
2'
(C. Harder,
Jeersdorf f,
0.353-m
Newtonian);
   
15.42,
10.9,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
   
14.85,
10.2,
6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
14.84,
10.5,
6'
(P. Dekelver,
0.3-m
Newtonian + CCD;
12.8'
tail in p.a. 19 deg);
   
14.83,
10.2,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
   
14.42,
10.3,
1.3'
(O. Miyazaki,
0.32-m
Newtonian);
   
13.86,
10.6,
2.4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
7.2'
tail in p.a. 20 deg);
   
12.88,
10.3,
3'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
5.2'
tail in p.a. 22 deg);
   
11.83,
9.9,
2'
(C. Harder,
Jeersdorf f,
0.353-m
Newtonian);
   
11.83,
9.8,
9.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.31° tail in p.a. 23 deg);
   
11.42,
10.4,
1.4'
(O. Miyazaki,
0.32-m
Newtonian);
   
10.87,
9.2,
2.6'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
   
10.81,
10.6,
2'
(C. Labordena,
Atzaneta,
0.2-m
Schmidt-Cassegrain);
   
10.42,
10.6,
0.9'
(O. Miyazaki,
0.32-m
Newtonian);
   
08.73,
11.8,
1.11'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD;
3.9'
tail in p.a. 20 deg);
   
03.75,
10.4,
1.2'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
02.87,
9.8,
7.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.12° tail in p.a. 20 deg);
   
01.86,
9.4,
10'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.16° tail in p.a. 20 deg);
   
01.80,
10.2,
7.3'
(M. Lošťák,
0.2-m
Newtonian + CCD);
   
01.72,
10.7,
0.53'
(S. Shurpakov,
0.41-m
Newtonian);
feb
28.88,
10.3,
1.5'
(M. Filipek,
0.4-m
Newtonian);
   
28.82,
9.7,
9.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.23° tail in p.a. 23 deg);
   
28.81,
10.4,
1.7'
(M. Kwinta,
0.3-m
Newtonian);
C/2021 E3 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
22.85,
17.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
20.85,
17.2,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
09.87,
17.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
feb
28.84,
15.5,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
13.84,
15.7,
0.7'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
1.2'
tail in p.a. 302 deg);
C/2021 QM45 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
12.89,
19.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
18.42,
14.6,
0.7'
(C. Wyatt,
0.4-m
Newtonian);
   
16.45,
14.7,
0.7'
(C. Wyatt,
0.4-m
Newtonian);
   
15.42,
14.9,
0.3'
(C. Wyatt,
0.4-m
Newtonian);
   
11.80,
15.0,
0.9'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.9'
tail in p.a. 354 deg);
C/2021 X1 (Maury-Attard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
11.77,
15.3,
1'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.06° tail in p.a. 104 deg);
C/2021 Y1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
18.42,
14.6,
0.9'
(C. Wyatt,
0.4-m
Newtonian);
   
16.40,
14.6,
1.2'
(C. Wyatt,
0.4-m
Newtonian);
   
15.40,
14.6,
0.7'
(C. Wyatt,
0.4-m
Newtonian);
   
12.82,
13.9,
--
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
   
11.78,
12.5,
6.6'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
2.4'
tail in p.a. 17 deg);
   
02.80,
12.6,
6'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD);
feb
28.79,
13.0,
0.7'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
C/2022 A2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.14,
10.4,
6'
(P. Dekelver,
0.3-m
Newtonian + CCD;
11.3'
tail in p.a. 353 deg);
   
28.14,
9.8,
3'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
   
26.85,
9.4,
4'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
25.79,
11.2,
0.6'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
24.82,
10.0,
2.5'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
22.78,
11.0,
1'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
22.20,
9.9,
5.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
21.79,
11.2,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
   
19.82,
10.1,
2.8'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
19.80,
10.5,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
   
19.19,
8.7,
4'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD;
16'
tail in p.a. 353 deg);
   
18.81,
10.5,
1.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
18.79,
10.7,
1.5'
(U. Pilz,
0.32-m
Newtonian);
   
18.77,
10.3,
2'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
17.80,
11.5,
0.82'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
2.5'
tail in p.a. 356 deg);
   
17.79,
10.1,
1'
(M. Kwinta,
0.3-m
Newtonian);
   
16.84,
10.4,
3'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
6.9'
tail in p.a. 351 deg);
   
16.77,
10.4,
0.8'
(M. Kwinta,
0.3-m
Newtonian);
   
15.83,
9.3,
5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
15.81,
9.8,
2.5'
(C. Harder,
Jeersdorf f,
0.353-m
Newtonian);
   
12.88,
10.3,
3'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
6.6'
tail in p.a. 352 deg);
   
12.15,
9.4,
9.9'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.23° tail in p.a. 354 deg);
   
11.83,
9.7,
2'
(C. Harder,
Jeersdorf f,
0.353-m
Newtonian);
   
11.78,
9.5,
9.9'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.87° tail in p.a. 353 deg);
   
10.85,
9.0,
2.6'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
   
03.79,
10.8,
1'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
02.89,
10.4,
2'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
2.4'
tail in p.a. 346 deg);
   
02.78,
9.3,
11'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.25° tail in p.a. 355 deg);
   
02.16,
10.2,
6.4'
(M. Lošťák,
0.2-m
Newtonian + CCD);
   
01.78,
9.3,
9.7'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.35° tail in p.a. 352 deg);
feb
28.83,
9.9,
1.7'
(O. Miyazaki,
0.32-m
Newtonian);
   
28.80,
9.4,
8.4'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.42° tail in p.a. 351 deg);
   
28.76,
10.3,
1.7'
(K. Harikae,
0.15-m
Newtonian + CCD;
2.5'
tail in p.a. 300 deg);
   
28.76,
9.5,
8.6'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.14° tail in p.a. 355 deg);
C/2022 A3 (Lemmon-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
27.96,
15.5,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
22.92,
16.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
15.89,
16.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
13.91,
9.8,
4.3'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
10.90,
16.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
06.13,
17.9,
0.38'
(N. James,
0.28-m
Schmidt-Cassegrain + CCD);
   
05.87,
15.7,
--
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
   
02.86,
16.1,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.97,
16.4,
0.7'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
01.84,
16.0,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.3'
tail in p.a. 35 deg);
feb
28.91,
14.2,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
27.98,
15.4,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
22.94,
16.2,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
11.99,
16.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
05.87,
15.4,
--
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
   
05.64,
16.0,
0.3'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
02.93,
15.2,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.91,
15.5,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
feb
28.98,
15.5,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
28.92,
15.8,
0.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.2'
tail in p.a. 90 deg);
C/2022 E3 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
26.87,
9.9,
4'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
25.81,
10.6,
1.6'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
24.81,
10.7,
2'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
23.93,
10.3,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
22.77,
9.8,
1.8'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
21.94,
10.2,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
21.87,
10.2,
4.5'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
20.89,
10.0,
5.26'
(K. Hills,
0.5-m
Newtonian + CCD);
   
19.94,
9.5,
2'
(A. Amorim,
0.09-m
Refractor);
   
19.81,
9.6,
2.5'
(C. Harder,
Jeersdorf f,
0.298-m
Newtonian);
   
19.47,
10.1,
1.3'
(O. Miyazaki,
0.32-m
Newtonian);
   
18.94,
9.3,
2'
(A. Amorim,
0.09-m
Refractor);
   
18.93,
10.2,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
18.80,
10.8,
2.5'
(P. Lívanec,
0.102-m
Refractor + CCD;
2.2'
tail in p.a. 79 deg);
   
18.79,
10.2,
2'
(M. Mašek,
0.2-m
Newtonian);
   
18.78,
10.3,
1.8'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
18.46,
9.4,
2.8'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
18.45,
10.6,
4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
18.45,
9.9,
4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
11'
tail in p.a. 55 deg);
   
18.44,
9.3,
7.5'
(C. Wyatt,
15x70
Binoculars);
   
17.99,
9.3,
2'
(A. Amorim,
0.09-m
Refractor);
   
17.78,
10.3,
1.2'
(M. Kwinta,
0.3-m
Newtonian);
   
17.78,
10.4,
2'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
17.76,
10.5,
0.91'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
6.4'
tail in p.a. 56 deg);
   
16.95,
9.2,
2'
(A. Amorim,
0.09-m
Refractor);
   
16.93,
10.1,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
16.85,
9.8,
2'
(V. Díaz,
La Romana, Alicante, Spain,
20x80
Binoculars);
   
16.83,
10.5,
1'
(M. Filipek,
0.4-m
Newtonian);
   
16.78,
10.1,
1.1'
(M. Kwinta,
0.3-m
Newtonian);
   
16.44,
9.3,
5.5'
(C. Wyatt,
15x70
Binoculars);
   
15.87,
9.8,
8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
15.86,
9.4,
5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain;
0.2° tail in p.a. 60 deg);
   
15.86,
9.9,
3.6'
(W. Kutschera,
0.08-m
Refractor;
0.92° tail);
   
15.83,
8.9,
5.5'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD;
30'
tail in p.a. 33 deg);
   
15.81,
10.0,
2.7'
(V. Kasten,
0.2-m
Newtonian);
   
15.81,
9.9,
2.8'
(C. Harder,
Jeersdorf f,
0.353-m
Newtonian;
6'
tail in p.a. 77 deg);
   
15.80,
8.9,
19'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.49° tail in p.a. 34 deg);
   
15.43,
10.6,
1.2'
(O. Miyazaki,
0.32-m
Newtonian;
2.8'
tail in p.a. 83 deg);
   
15.40,
9.6,
7'
(C. Wyatt,
15x70
Binoculars);
   
14.87,
9.8,
8.3'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
14.85,
10.4,
5.26'
(K. Hills,
0.5-m
Newtonian + CCD);
   
14.83,
10.0,
6'
(P. Dekelver,
0.3-m
Newtonian + CCD;
17.2'
tail in p.a. 36 deg);
   
14.81,
9.6,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
   
14.43,
10.6,
1.3'
(O. Miyazaki,
0.32-m
Newtonian;
2.3'
tail in p.a. 67 deg);
   
13.85,
9.6,
8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
11.96,
9.1,
4'
(A. Amorim,
0.09-m
Refractor);
   
11.82,
8.8,
3.5'
(C. Harder,
Jeersdorf f,
0.353-m
Newtonian;
4.5'
tail in p.a. 77 deg);
   
11.81,
9.5,
3'
(V. Kasten,
0.113-m
Newtonian);
   
11.80,
9.0,
13'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.77° tail in p.a. 39 deg);
   
11.77,
9.6,
2'
(U. Pilz,
0.105-m
Refractor;
0.07° tail in p.a. 80 deg);
   
11.43,
9.5,
2.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
10.83,
9.9,
4'
(C. Labordena,
Atzaneta,
0.2-m
Schmidt-Cassegrain);
   
10.78,
8.9,
12'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.89° tail in p.a. 41 deg);
   
10.43,
10.1,
1.8'
(O. Miyazaki,
0.32-m
Newtonian);
   
09.90,
10.6,
1.13'
(K. Hills,
0.5-m
Newtonian + CCD);
   
09.86,
10.8,
3'
(G. Pappa,
Namibia (remote control),
0.5-m
Prime focus of a reflector + CCD);
   
06.95,
9.9,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
   
05.84,
8.5,
3'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
   
05.49,
8.5,
2.8'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
12'
tail in p.a. 50 deg);
   
05.49,
9.8,
4.6'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
12'
tail in p.a. 50 deg);
   
05.48,
9.0,
4.6'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
12'
tail in p.a. 50 deg);
   
04.81,
9.8,
5'
(J. Navarro Pina,
Puerto de la Cadena ( Murcia , Spain ),
20x80
Binoculars);
   
04.81,
8.5,
12'
(T. Lehmann,
Felizzano (remote),
0.2-m
Newtonian + CCD;
0.41° tail in p.a. 38 deg);
   
04.79,
9.8,
3.5'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
03.76,
9.8,
4'
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain);
   
02.84,
8.4,
14'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
02.83,
8.2,
16'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.38° tail in p.a. 27 deg);
   
02.78,
8.4,
11'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.7° tail in p.a. 34 deg);
   
01.82,
8.8,
12'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.82,
8.1,
17'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.24° tail in p.a. 29 deg);
   
01.82,
9.5,
9.2'
(M. Lošťák,
0.2-m
Newtonian + CCD);
feb
28.95,
8.3,
5'
(A. Amorim,
0.09-m
Refractor);
   
28.90,
9.0,
2'
(M. Filipek,
0.4-m
Newtonian);
   
28.85,
7.7,
19'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.25° tail in p.a. 35 deg);
   
28.82,
8.1,
7'
(C. Labordena,
Benlloch,
11x80
Binoculars);
   
28.81,
8.4,
5'
(V. Kasten,
20x80
Binoculars);
   
28.80,
9.5,
10'
(J. Navarro Pina,
Puerto de la Cadena ( Murcia , Spain ),
20x80
Binoculars);
   
28.79,
8.6,
2'
(M. Kwinta,
0.3-m
Newtonian);
   
28.79,
7.9,
2'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
5'
tail);
   
28.77,
8.3,
12'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.63° tail in p.a. 37 deg);
   
28.76,
8.6,
10.6'
(P. Lívanec,
0.028-m
Camera lens + CCD;
6.9'
tail in p.a. 51 deg);
C/2022 L2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
28.16,
16.1,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
16.12,
16.9,
0.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
05.12,
16.0,
--
(G. Pappa,
Piemonte,Italy (remote control),
0.2-m
Ritchey-Chretien + CCD);
   
04.22,
17.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
02.11,
16.6,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2022 P1 (NEOWISE)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
14.13,
12.9,
4.4'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD);
C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
feb
28.79,
17.0,
--
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
C/2022 U2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
20.88,
16.0,
0.94'
(K. Hills,
0.5-m
Newtonian + CCD);
   
15.88,
12.2,
6.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
13.86,
15.4,
0.94'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.90,
14.4,
1.2'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
11.88,
12.5,
4.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD);
   
08.84,
15.8,
0.55'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
   
02.80,
14.4,
1.2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.78,
14.8,
1'
(P. Dekelver,
0.3-m
Newtonian + CCD);
feb
28.79,
12.0,
--
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
   
28.77,
13.6,
1.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2022 U4 (Bok)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
14.95,
18.1,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2022 W2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
22.88,
18.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
13.94,
18.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2022 W3 (Leonard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
20.87,
17.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2023 A1 (Leonard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
25.89,
16.2,
0.1'
(S. Szabo,
Agfalva,
0.6-m
Newtonian);
   
18.54,
16.7,
0.4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
17.87,
16.5,
0.19'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
15.93,
16.3,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
12.03,
15.8,
1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
04.87,
16.4,
0.3'
(G. Pappa,
Piemonte,Italy (remote control),
0.2-m
Ritchey-Chretien + CCD);
   
02.91,
15.7,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.90,
16.6,
0.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
01.89,
16.1,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.14,
17.1,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
feb
28.96,
15.8,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.6'
tail in p.a. 131 deg);
C/2023 A2 (SWAN)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
02.15,
13.2,
2'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.19,
17.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
18.73,
18.1,
--
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
18.02,
17.4,
0.19'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
16.08,
17.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
16.06,
18.1,
--
(J. Ryske,
Finland Viestikallio remote observatory,
0.305-m
Newtonian + CCD);
   
15.02,
17.8,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
03.98,
18.0,
--
(G. Pappa,
Namibia (remote control),
0.5-m
Prime focus of a reflector + CCD);
   
02.18,
18.2,
0.4'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
01.20,
17.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
feb
28.78,
18.2,
--
(K. Yoshimoto,
0.51-m
Newtonian + CCD);
   
28.20,
17.7,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2023 B2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
06.94,
17.8,
--
(G. Pappa,
Namibia (remote control),
0.36-m
Ritchey-Chretien + CCD);
C/2023 E1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
24.00,
17.8,
--
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
   
18.65,
17.9,
0.4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
14.01,
18.3,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
10.08,
18.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
05.69,
18.4,
0.4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
P/2021 N2 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
09.94,
18.4,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
P/2021 V2 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
22.93,
18.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
10.88,
18.3,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
P/2022 P2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
12.00,
20.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
P/2023 B1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
23.03,
18.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
17.93,
18.2,
0.19'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
16.01,
17.9,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
13.00,
17.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
02.95,
16.3,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.95,
16.4,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
01.12,
16.6,
1.1'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
01.03,
16.6,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
P/2023 B3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
03.94,
19.0,
--
(G. Pappa,
Namibia (remote control),
0.5-m
Prime focus of a reflector + CCD);
P/2023 C1 (Jahn)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2023
mar
25.90,
18.7,
--
(G. Pappa,
Namibia (remote control),
0.36-m
Ritchey-Chretien + CCD);