4P/Faye
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
18.81,
15.8,
--
(G. Pappa,
Namibia (remote control) ;,
0.2-m
Newtonian + CCD);
   
30.76,
15.1,
1.7'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
0.13 tail in p.a. 277 deg);
may
04.80,
14.6,
2.9'
(T. Lehmann,
0.2-m
Newtonian + CCD;
0.27 tail in p.a. 277 deg);
9P/Tempel 1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
04.11,
13.2,
4.3'
(T. Lehmann,
0.2-m
Newtonian + CCD;
0.11 tail in p.a. 249 deg);
   
06.74,
14.7,
0.7'
(C. Wyatt,
0.4-m
Newtonian);
   
15.02,
14.0,
0.4'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
19P/Borrelly
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
17.83,
10.9,
7'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.09 tail in p.a. 70 deg);
   
18.83,
11.4,
2'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
18.93,
11.0,
2'
(W. Kutschera,
0.25-m
Newtonian);
   
19.83,
10.8,
1.8'
(M. Kwinta,
0.3-m
Newtonian);
   
19.87,
10.8,
2.5'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
19.88,
11.3,
3.9'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
1.2'
tail in p.a. 72 deg);
   
20.84,
10.8,
2.2'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
   
20.90,
11.3,
3.2'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
22.47,
10.6,
1'
(O. Miyazaki,
Koya;,
0.32-m
Newtonian);
   
23.85,
11.1,
1.3'
(M. Kwinta,
0.3-m
Newtonian);
   
23.86,
11.6,
1.2'
(M. Filipek,
0.4-m
Newtonian);
   
23.89,
10.6,
2'
(C. Harder,
Wangersen f,
0.531-m
Newtonian);
   
24.14,
10.9,
8.1'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD);
   
24.89,
11.4,
3.2'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
25.46,
10.7,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
   
25.82,
11.2,
6.7'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
25.91,
11.4,
2'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
26.87,
11.0,
2'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
27.87,
11.1,
1.8'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
28.87,
11.3,
5'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.2'
tail in p.a. 83 deg);
   
28.90,
11.1,
2.9'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
28.91,
10.3,
3.5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
29.84,
10.9,
2.5'
(C. Labordena,
La Serra d Engarcera;,
0.2-m
Schmidt-Cassegrain);
   
29.85,
13.3,
0.28'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
0.9'
tail in p.a. 75 deg);
   
30.47,
10.9,
1.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
30.85,
11.2,
1.2'
(M. Kwinta,
0.3-m
Newtonian);
may
01.58,
12.2,
1.5'
(J. Chambo,
Mayhill, New Mexico, USA,
0.431-m
Ritchey-Chretien + CCD;
4'
tail in p.a. 230 deg);
   
01.90,
11.3,
5.2'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
02.87,
11.3,
5.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.7'
tail in p.a. 81 deg);
   
02.88,
11.0,
2'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
03.48,
10.5,
1.8'
(O. Miyazaki,
0.32-m
Newtonian);
   
03.88,
11.2,
2.2'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
04.48,
10.4,
2.1'
(O. Miyazaki,
0.32-m
Newtonian);
   
04.91,
10.2,
4'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
06.89,
11.5,
4.4'
(T. Lehmann,
0.279-m
Newtonian + CCD);
   
08.90,
11.4,
5.7'
(T. Lehmann,
0.279-m
Newtonian + CCD);
   
10.18,
12.0,
2.7'
(C. Hergenrother,
Tanque Verde, Arizona, USA,
0.072-m
Refractor);
   
11.89,
11.6,
4.8'
(S. Fritsche,
0.1-m
Refractor + CCD;
2'
tail in p.a. 93 deg);
22P/Kopff
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
01.16,
11.2,
8.1'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
0.13 tail in p.a. 251 deg);
   
06.76,
11.8,
2.5'
(C. Wyatt,
0.4-m
Newtonian);
   
07.29,
12.1,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
08.29,
12.1,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
09.18,
11.2,
2'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
   
09.29,
12.0,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
10.29,
12.0,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
21.03,
16.1,
--
(E. Stickel,
Burke-Gaffney Observatory;,
0.61-m
Cassegrain reflector + CCD);
45P/Honda-Mrkos-Pajdusakova
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
17.14,
7.0,
1.5'
(C. Hergenrother,
Tanque Verde, Arizona, USA,
30x125.0
Binoculars);
67P/Churyumov-Gerasimenko
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
17.92,
13.5,
3.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.08 tail in p.a. 286 deg);
   
18.85,
13.6,
2'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
6.8'
tail in p.a. 287 deg);
   
20.88,
13.0,
1.4'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
   
20.94,
14.3,
1.5'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
24.17,
13.7,
3.7'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
0.34 tail in p.a. 287 deg);
   
26.91,
14.6,
1.5'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
28.89,
14.2,
2.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.19 tail in p.a. 288 deg);
may
01.91,
15.4,
0.9'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
03.75,
13.9,
3.9'
(T. Lehmann,
0.2-m
Newtonian + CCD;
0.2 tail in p.a. 288 deg);
70P/Kojima
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
23.95,
17.9,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
28.93,
16.4,
1.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD);
   
30.93,
17.4,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
02.92,
17.6,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
06.00,
18.0,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
71P/Clark
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
25.88,
19.7,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
03.87,
20.5,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
73P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
18.80,
16.2,
--
(G. Pappa,
Namibia (remote control) ;,
0.2-m
Newtonian + CCD);
   
20.98,
17.4,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
22.17,
16.4,
1'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
2.1'
tail in p.a. 118 deg);
   
22.17,
16.6,
0.8'
(R. Ramlow,
0.106-m
Refractor + CCD;
0.5'
tail in p.a. 123 deg);
   
26.02,
17.4,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
02.53,
16.6,
0.4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
0.4'
tail in p.a. 120 deg);
   
02.93,
15.9,
1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.5'
tail in p.a. 121 deg);
   
02.94,
16.3,
0.9'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.9'
tail in p.a. 117 deg);
   
06.96,
15.9,
1'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.8'
tail in p.a. 110 deg);
   
13.83,
15.9,
0.4'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
77P/Longmore
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
14.91,
19.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
86P/Wild
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
04.00,
20.2,
--
(G. Pappa,
Namibia (remote control),
0.5-m
Cassegrain reflector + CCD);
99P/Kowal
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
24.09,
17.2,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
27.97,
17.3,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
02.92,
17.0,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
04.25,
17.0,
--
(E. Stickel,
Burke-Gaffney Observatory;,
0.61-m
Cassegrain reflector + CCD);
100P/Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
23.93,
19.0,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
25.02,
18.9,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
03.92,
18.5,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
05.90,
18.7,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
104P/Kowal
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
17.88,
12.5,
5.4'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
18.85,
13.8,
1.5'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
20.85,
11.6,
2.8'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
   
20.92,
12.9,
4.1'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
22.15,
12.5,
4.6'
(R. Ramlow,
0.106-m
Refractor + CCD);
   
27.89,
12.5,
5.9'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
28.85,
12.7,
5.7'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.6'
tail in p.a. 117 deg);
   
30.87,
14.3,
1.5'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
03.41,
14.7,
0.8'
(C. Wyatt,
0.4-m
Newtonian);
   
03.80,
12.4,
7.8'
(T. Lehmann,
0.2-m
Newtonian + CCD);
107P/Wilson-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
06.15,
18.7,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
110P/Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
24.15,
17.0,
0.9'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
0.8'
tail in p.a. 309 deg);
   
26.96,
18.4,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
27.93,
18.4,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
116P/Wild
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
18.84,
13.4,
2.6'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.04 tail in p.a. 111 deg);
   
18.84,
13.3,
2'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
20.39,
13.6,
1.4'
(C. Wyatt,
0.4-m
Newtonian);
   
20.89,
13.8,
0.8'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
   
20.96,
13.9,
1.7'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
22.16,
13.3,
3.5'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
0.06 tail in p.a. 119 deg);
   
23.90,
13.5,
0.8'
(C. Harder,
Wangersen f,
0.531-m
Newtonian);
   
24.92,
14.1,
1.5'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
26.01,
14.1,
1.5'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
27.92,
13.5,
3'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
2.1'
tail in p.a. 109 deg);
   
28.83,
13.6,
0.3'
(W. Hasubick,
0.44-m
Newtonian);
   
29.92,
13.8,
0.17'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
1.5'
tail in p.a. 110 deg);
   
30.78,
13.5,
3.1'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
0.04 tail in p.a. 114 deg);
may
01.93,
14.0,
1.5'
(P. Carson,
Fegenal de la Sierra;,
0.03-m
Cassegrain reflector + CCD);
   
02.38,
13.7,
1'
(C. Wyatt,
0.4-m
Newtonian);
   
02.90,
13.6,
0.8'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
03.43,
13.8,
1.3'
(C. Wyatt,
0.4-m
Newtonian);
   
03.77,
13.4,
3.2'
(T. Lehmann,
0.2-m
Newtonian + CCD;
0.05 tail in p.a. 113 deg);
   
05.97,
14.2,
0.75'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
06.48,
13.8,
1'
(C. Wyatt,
0.4-m
Newtonian);
   
06.92,
13.6,
2.5'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.05 tail in p.a. 119 deg);
   
13.83,
13.9,
1'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
117P/Helin-Roman-Alu
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
19.95,
13.2,
0.7'
(G. Pappa,
Namibia (remote control) ;,
0.2-m
Newtonian + CCD);
   
30.16,
15.5,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
04.09,
14.2,
1.3'
(T. Lehmann,
0.2-m
Newtonian + CCD;
0.12 tail in p.a. 266 deg);
   
06.75,
14.9,
0.4'
(C. Wyatt,
0.4-m
Newtonian);
   
09.22,
14.4,
0.56'
(K. Hills,
0.5-m
Newtonian + CCD);
   
10.14,
14.6,
0.6'
(P. Carson,
f,
0.315-m
Cassegrain reflector + CCD);
152P/Helin-Lawrence
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
03.97,
16.9,
--
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
169P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
22.07,
19.3,
--
(A. Novichonok,
1.015-m
Ritchey-Chretien + CCD);
173P/Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
26.93,
20.2,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
199P/Shoemaker
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
07.80,
19.8,
--
(G. Pappa,
Namibia (remote control),
0.5-m
Cassegrain reflector + CCD);
237P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
07.79,
20.0,
--
(G. Pappa,
Namibia (remote control),
0.5-m
Cassegrain reflector + CCD);
325P/Yang-Gao
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
10.99,
18.0,
--
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
   
11.98,
17.9,
--
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
337P/WISE
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
03.17,
19.8,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
11.14,
20.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
402P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
21.05,
16.7,
--
(E. Stickel,
Burke-Gaffney Observatory;,
0.61-m
Cassegrain reflector + CCD);
440P/Kobayashi
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
26.89,
18.3,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
20.06,
10.9,
4.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.07 tail in p.a. 325 deg);
   
21.08,
10.6,
--
(N. Novikov,
Russia, d. Enaberdino,
0.15-m
Newtonian);
   
23.02,
10.3,
2'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
24.01,
10.7,
1.7'
(M. Kwinta,
0.3-m
Newtonian);
   
24.05,
10.3,
2'
(C. Harder,
Wangersen f,
0.531-m
Newtonian);
   
24.16,
10.3,
2.3'
(W. Kutschera,
0.25-m
Newtonian);
   
24.37,
10.8,
3.5'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
0.09 tail in p.a. 326 deg);
   
24.69,
10.8,
2.1'
(K. Harikae,
0.15-m
Newtonian + CCD);
   
25.14,
10.2,
2.8'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
26.30,
10.8,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
27.29,
10.7,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
28.30,
10.7,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
29.02,
10.3,
3'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
29.02,
10.7,
1.5'
(M. Kwinta,
0.3-m
Newtonian);
   
29.95,
10.6,
1.3'
(M. Filipek,
0.25-m
Newtonian);
   
29.98,
10.4,
0.56'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
30.02,
10.6,
1.5'
(M. Kwinta,
0.3-m
Newtonian);
   
30.12,
10.0,
5.3'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
30.27,
10.1,
3'
(M. Goiato,
0.22-m
Newtonian);
   
30.48,
10.0,
2'
(C. Hergenrother,
30x125.0
Binoculars);
may
01.01,
10.6,
1.5'
(M. Kwinta,
0.3-m
Newtonian);
   
01.75,
10.6,
2.2'
(O. Miyazaki,
0.32-m
Newtonian);
   
01.90,
10.4,
--
(N. Novikov,
Russia, d. Enaberdino;,
0.15-m
Newtonian);
   
02.28,
10.7,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
02.95,
10.9,
1.4'
(T. Karhula,
Virsbo, Sweden;,
0.12-m
Refractor);
   
03.07,
10.5,
5'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.13 tail in p.a. 332 deg);
   
03.23,
10.7,
3.2'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
03.69,
10.6,
3'
(K. Harikae,
0.15-m
Newtonian + CCD);
   
03.75,
10.5,
1.3'
(O. Miyazaki,
0.32-m
Newtonian);
   
03.79,
10.8,
1.7'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
3'
tail in p.a. 325 deg);
   
05.09,
9.6,
2.6'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
   
05.95,
10.4,
--
(N. Novikov,
Russia, d. Enaberdino;,
0.15-m
Newtonian);
   
06.06,
9.7,
2.5'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
   
06.11,
9.9,
5.1'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
06.14,
10.6,
2.6'
(W. Kutschera,
0.25-m
Newtonian);
   
06.28,
10.4,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
06.70,
10.3,
2'
(C. Wyatt,
0.4-m
Newtonian);
   
07.06,
10.4,
4.4'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.11 tail in p.a. 334 deg);
   
07.26,
10.3,
3'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
07.46,
10.2,
3'
(C. Labordena,
La Serra d Engarcera,
0.2-m
Schmidt-Cassegrain);
   
08.27,
10.2,
3'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
09.03,
10.2,
8.2'
(S. Fritsche,
0.1-m
Refractor + CCD;
0.15 tail in p.a. 334 deg);
   
09.06,
10.3,
5.8'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.16 tail in p.a. 335 deg);
   
09.20,
10.4,
4.32'
(K. Hills,
0.5-m
Newtonian + CCD);
   
09.28,
10.2,
3'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
10.01,
10.1,
3.2'
(M. Kwinta,
0.3-m
Newtonian);
   
10.12,
9.6,
9.2'
(P. Carson,
Fregenal de la Sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
10.28,
10.1,
3'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
12.03,
10.4,
3.57'
(N. James,
0.28-m
Schmidt-Cassegrain + CCD);
   
13.93,
10.2,
3'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
C/2017 U7
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
27.17,
19.0,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
11.15,
18.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2018 U1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
01.02,
15.7,
0.9'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
1.6'
tail in p.a. 16 deg);
C/2019 K7 (SMITH)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
27.20,
18.0,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
06.09,
17.5,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
C/2019 L3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
18.83,
9.8,
4'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
   
18.85,
10.4,
1.5'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
19.82,
10.5,
1.4'
(M. Kwinta,
0.3-m
Newtonian);
   
19.85,
10.0,
2.5'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
19.87,
10.4,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
   
19.88,
10.3,
1'
(M. Filipek,
0.25-m
Newtonian);
   
19.92,
10.8,
2.3'
(W. Kutschera,
0.25-m
Newtonian);
   
20.36,
10.5,
1.3'
(C. Wyatt,
0.4-m
Newtonian;
4'
tail in p.a. 132 deg);
   
20.85,
10.1,
2.1'
(A. Kammerer,
Teufelsmuehle (Black Forest), Germany,
0.203-m
Schmidt-Cassegrain);
   
20.87,
10.4,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
   
20.98,
10.4,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
21.89,
10.1,
1.9'
(T. Karhula,
Virsbo, Sweden;,
0.305-m
Newtonian);
   
21.94,
10.4,
1.5'
(M. Goiato,
0.22-m
Newtonian);
   
21.98,
10.4,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
22.15,
9.6,
12'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
0.16 tail in p.a. 22 deg);
   
22.15,
9.8,
7.1'
(R. Ramlow,
0.106-m
Refractor + CCD;
8'
tail in p.a. 29 deg);
   
22.49,
11.2,
1.6'
(O. Miyazaki,
Koya;,
0.32-m
Newtonian);
   
22.51,
11.1,
1'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
   
22.96,
10.4,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
23.83,
10.6,
0.5'
(U. Pilz,
0.32-m
Newtonian;
1.6 tail in p.a. 59 deg);
   
23.83,
10.6,
1'
(M. Filipek,
0.4-m
Newtonian);
   
23.84,
10.8,
1.1'
(M. Kwinta,
0.3-m
Newtonian);
   
23.88,
9.8,
2.2'
(C. Harder,
Wangersen f,
0.531-m
Newtonian);
   
23.88,
10.0,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
   
24.90,
10.3,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
   
24.96,
10.5,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
25.47,
10.4,
1'
(O. Miyazaki,
0.32-m
Newtonian);
   
25.86,
9.8,
2.5'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
25.96,
10.5,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
26.86,
10.0,
2.5'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
26.97,
10.5,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
27.84,
9.9,
9.8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.14 tail in p.a. 26 deg);
   
27.86,
10.0,
2.6'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
27.88,
10.3,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
   
27.91,
10.1,
4.7'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
27.96,
10.6,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
28.86,
10.3,
2.2'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
28.90,
9.8,
2.5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
28.97,
10.6,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
29.86,
10.2,
2.5'
(C. Labordena,
La Serra d Engarcera;,
0.2-m
Schmidt-Cassegrain);
   
29.87,
10.0,
2.4'
(C. Harder,
Jeersdorf, h,
0.298-m
Newtonian);
   
30.46,
10.3,
1.7'
(O. Miyazaki,
0.32-m
Newtonian);
   
30.75,
9.9,
7.7'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
0.09 tail in p.a. 22 deg);
   
30.84,
10.4,
1.1'
(M. Kwinta,
0.3-m
Newtonian);
may
01.58,
10.0,
5'
(J. Chambo,
Mayhill, New Mexico, USA,
0.431-m
Ritchey-Chretien + CCD);
   
02.37,
10.3,
1.9'
(C. Wyatt,
0.4-m
Newtonian);
   
02.88,
10.1,
2'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
03.42,
10.6,
2'
(C. Wyatt,
0.4-m
Newtonian);
   
03.46,
10.2,
1.4'
(O. Miyazaki,
0.32-m
Newtonian);
   
03.48,
10.9,
1.4'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
   
03.74,
9.8,
9.3'
(T. Lehmann,
0.2-m
Newtonian + CCD;
0.08 tail in p.a. 26 deg);
   
03.87,
9.9,
2.6'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
04.46,
10.1,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
   
04.90,
9.8,
3'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
06.92,
10.3,
3'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
07.92,
10.4,
3'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
08.92,
10.4,
3'
(J. de Souza Aguiar,
0.27-m
Newtonian);
C/2019 O3
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
25.10,
17.3,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
12.21,
17.4,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
18.84,
11.6,
1'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
18.85,
12.1,
0.7'
(W. Hasubick,
0.44-m
Newtonian);
   
19.50,
12.2,
1.3'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
6'
tail in p.a. 235 deg);
   
19.88,
11.7,
1.3'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
20.37,
11.6,
1.2'
(C. Wyatt,
0.4-m
Newtonian);
   
20.99,
11.7,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
21.99,
11.7,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
22.00,
11.6,
1'
(M. Goiato,
0.22-m
Newtonian);
   
22.54,
13.0,
0.7'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
   
22.99,
11.7,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
23.84,
12.3,
1'
(U. Pilz,
0.32-m
Newtonian);
   
23.87,
11.9,
1.8'
(C. Harder,
Wangersen f,
0.531-m
Newtonian);
   
23.90,
12.2,
0.7'
(M. Filipek,
0.4-m
Newtonian);
   
24.97,
12.0,
1.9'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
24.99,
11.8,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
25.90,
12.1,
4.6'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.08 tail in p.a. 235 deg);
   
25.96,
12.1,
2'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
25.99,
11.8,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
26.88,
11.0,
1.7'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
26.98,
11.7,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
27.88,
11.1,
1.5'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
27.90,
11.6,
1'
(T. Karhula,
Virsbo, Sweden,
0.305-m
Newtonian);
   
27.99,
11.7,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
28.88,
11.9,
1.8'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
28.92,
10.6,
4'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
28.99,
11.6,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
29.88,
12.0,
1.2'
(C. Harder,
Jeersdorf, h,
0.298-m
Newtonian);
   
29.88,
11.2,
2'
(C. Labordena,
La Serra d Engarcera;,
0.2-m
Schmidt-Cassegrain);
may
02.40,
12.3,
1.5'
(C. Wyatt,
0.4-m
Newtonian);
   
02.85,
12.2,
2.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.05 tail in p.a. 230 deg);
   
02.86,
12.1,
3.7'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.09 tail in p.a. 236 deg);
   
02.89,
11.2,
2.1'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
02.93,
11.4,
2.26'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
03.44,
12.2,
2.2'
(C. Wyatt,
0.4-m
Newtonian);
   
03.51,
12.5,
0.9'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
   
03.89,
11.5,
2'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
04.93,
10.4,
5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
06.48,
12.3,
2.1'
(C. Wyatt,
0.4-m
Newtonian);
   
06.95,
11.7,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
07.94,
11.9,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
08.86,
12.3,
2.6'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.09 tail in p.a. 232 deg);
   
08.94,
11.9,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
14.87,
12.2,
0.8'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
19.03,
13.7,
--
(G. Pappa,
Nerpio, Spain (remote control) ;,
0.2-m
Newtonian + CCD);
   
19.53,
14.5,
0.6'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
20.02,
14.3,
1.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.8'
tail in p.a. 75 deg);
   
24.37,
14.3,
1.2'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
1.2'
tail in p.a. 76 deg);
   
25.06,
14.3,
0.8'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
26.11,
15.4,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
28.92,
14.8,
1.3'
(M. Lostak,
0.2-m
Newtonian + CCD);
   
28.99,
13.6,
0.5'
(W. Hasubick,
0.44-m
Newtonian);
   
29.01,
14.2,
1.3'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.5'
tail in p.a. 73 deg);
   
29.92,
13.8,
0.8'
(T. Karhula,
Virsbo, Sweden;,
0.305-m
Newtonian);
   
30.07,
14.1,
1.1'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
01.93,
13.6,
0.25'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
03.02,
14.2,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.7'
tail in p.a. 78 deg);
   
06.07,
14.2,
0.8'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
06.08,
14.1,
0.75'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
06.51,
14.5,
0.6'
(C. Wyatt,
0.4-m
Newtonian);
   
07.02,
14.1,
1.3'
(T. Lehmann,
0.279-m
Newtonian + CCD;
2.3'
tail in p.a. 74 deg);
   
07.89,
14.8,
0.38'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
2.13'
tail in p.a. 74 deg);
   
08.96,
14.1,
1.6'
(T. Lehmann,
0.279-m
Newtonian + CCD;
2.1'
tail in p.a. 73 deg);
   
10.08,
14.2,
0.8'
(P. Carson,
Fregenal de la Sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2020 F2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
24.08,
17.5,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
03.02,
17.5,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
C/2020 H6 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
25.08,
16.4,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
26.13,
16.8,
0.38'
(K. Hills,
Comphot version 1.2.6;,
0.5-m
Newtonian + CCD);
   
28.96,
16.5,
0.9'
(M. Lostak,
0.2-m
Newtonian + CCD);
may
03.04,
15.9,
0.9'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
2.3'
tail in p.a. 218 deg);
   
03.08,
15.9,
1.1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.6'
tail in p.a. 244 deg);
   
06.10,
16.4,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
07.04,
15.8,
1'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.06 tail in p.a. 217 deg);
   
07.90,
16.1,
0.24'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
1.2'
tail in p.a. 227 deg);
   
08.99,
15.8,
1'
(T. Lehmann,
0.279-m
Newtonian + CCD;
1.3'
tail in p.a. 216 deg);
C/2020 J1 (SONEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
17.82,
15.1,
--
(G. Pappa,
Namibia (remote control) ;,
0.2-m
Newtonian + CCD);
   
25.04,
15.1,
0.9'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
25.99,
15.4,
0.75'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
28.98,
14.9,
1.5'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.11 tail in p.a. 139 deg);
   
30.05,
15.9,
0.6'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
03.07,
15.8,
0.56'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
06.04,
15.8,
0.6'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
06.99,
15.2,
1.2'
(T. Lehmann,
0.279-m
Newtonian + CCD;
2.1'
tail in p.a. 130 deg);
   
08.99,
14.8,
1.5'
(S. Fritsche,
0.1-m
Refractor + CCD;
1.1'
tail in p.a. 119 deg);
   
13.84,
15.1,
0.3'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
25.12,
15.0,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
28.05,
14.8,
1.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
28.99,
13.6,
0.3'
(W. Hasubick,
0.44-m
Newtonian);
   
29.00,
15.4,
0.9'
(M. Lostak,
0.2-m
Newtonian + CCD);
   
30.04,
14.5,
0.22'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
30.10,
15.0,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
06.09,
14.4,
0.6'
(P. Carson,
Fegenal de la Sierra;,
0.145-m
Cassegrain reflector + CCD);
   
06.71,
14.3,
0.3'
(C. Wyatt,
0.4-m
Newtonian);
   
07.22,
14.5,
0.56'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
09.04,
14.4,
0.9'
(T. Lehmann,
0.279-m
Newtonian + CCD);
C/2020 M5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
24.95,
15.8,
0.6'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
25.94,
16.0,
0.56'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
30.79,
15.5,
1.4'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
2.2'
tail in p.a. 51 deg);
may
02.41,
15.4,
0.3'
(C. Wyatt,
0.4-m
Newtonian);
   
02.90,
15.8,
1.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
03.44,
15.4,
0.3'
(C. Wyatt,
0.4-m
Newtonian);
   
05.87,
16.5,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
13.84,
15.8,
0.3'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
C/2020 O2 (Amaral)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
27.23,
16.9,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
07.21,
17.2,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
10.10,
16.1,
0.4'
(P. Carson,
Fregenal de la Sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2020 P3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
03.13,
17.4,
--
(E. Stickel,
Burke-Gaffney Observatory;,
0.61-m
Cassegrain reflector + CCD);
C/2020 PV6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
24.13,
19.1,
0.38'
(K. Hills,
Comphot version 1.2.6;,
0.5-m
Newtonian + CCD);
may
02.94,
19.6,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
03.00,
17.6,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1'
tail in p.a. 83 deg);
   
03.97,
19.5,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
05.95,
19.2,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
C/2020 R7 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
01.15,
14.4,
1.7'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
2.4'
tail in p.a. 118 deg);
   
06.73,
13.9,
0.6'
(C. Wyatt,
0.4-m
Newtonian);
   
14.00,
13.7,
0.7'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
18.84,
12.8,
0.6'
(W. Hasubick,
0.44-m
Newtonian);
   
18.86,
13.5,
1.5'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
0.8'
tail in p.a. 127 deg);
   
18.88,
13.7,
2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
1.2'
tail in p.a. 130 deg);
   
19.84,
12.8,
0.9'
(G. Pappa,
Nerpio, Spain (remote control) ;,
0.2-m
Newtonian + CCD);
   
19.90,
13.5,
0.6'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian;
1'
tail in p.a. 100 deg);
   
22.19,
13.8,
1.6'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
1.8'
tail in p.a. 128 deg);
   
22.98,
13.3,
0.9'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
23.85,
13.8,
1.2'
(U. Pilz,
0.32-m
Newtonian);
   
23.91,
13.7,
0.75'
(K. Hills,
Comphot version 1.2.6;,
0.5-m
Newtonian + CCD);
   
23.91,
14.1,
0.45'
(C. Harder,
Wangersen f,
0.531-m
Newtonian;
0.5'
tail in p.a. 110 deg);
   
24.70,
13.6,
0.5'
(K. Harikae,
0.15-m
Newtonian + CCD);
   
24.99,
13.8,
1'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
25.90,
13.7,
0.8'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
25.91,
13.9,
0.75'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
26.89,
13.6,
0.55'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
27.89,
13.7,
0.6'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian;
0.9'
tail in p.a. 130 deg);
   
28.01,
13.8,
2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
1.4'
tail in p.a. 130 deg);
   
28.88,
14.4,
1.5'
(M. Lostak,
0.2-m
Newtonian + CCD);
   
28.90,
13.7,
0.75'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian;
1'
tail in p.a. 120 deg);
   
28.96,
13.8,
1.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.5'
tail in p.a. 127 deg);
   
29.89,
13.8,
0.5'
(C. Harder,
Jeersdorf, h,
0.298-m
Newtonian;
0.8'
tail in p.a. 110 deg);
   
30.03,
13.7,
0.9'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
30.38,
13.1,
0.7'
(J. Chambo,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD;
1.2'
tail in p.a. 129 deg);
may
02.90,
13.2,
0.94'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
02.91,
13.7,
0.8'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian;
0.8'
tail in p.a. 120 deg);
   
02.97,
13.7,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.4'
tail in p.a. 123 deg);
   
03.70,
13.6,
1.2'
(K. Harikae,
0.15-m
Newtonian + CCD);
   
03.91,
13.5,
0.7'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian;
1'
tail in p.a. 120 deg);
   
06.02,
14.0,
0.6'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
06.09,
13.7,
1.6'
(W. Kutschera,
0.54-m
Newtonian);
   
07.00,
13.7,
1.3'
(T. Lehmann,
0.279-m
Newtonian + CCD;
1.6'
tail in p.a. 122 deg);
   
08.93,
13.7,
1.3'
(T. Lehmann,
0.279-m
Newtonian + CCD;
1.3'
tail in p.a. 121 deg);
   
08.94,
13.7,
1.6'
(S. Fritsche,
0.1-m
Refractor + CCD;
1'
tail in p.a. 127 deg);
C/2020 Y2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
20.37,
15.0,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
may
02.39,
14.8,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
   
03.42,
14.8,
0.6'
(C. Wyatt,
0.4-m
Newtonian);
   
06.47,
14.9,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
C/2021 C5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
25.87,
18.0,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
02.88,
18.0,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
C/2021 D2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
27.95,
19.0,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
02.90,
18.1,
0.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD);
   
12.91,
19.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2021 E3 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
26.31,
11.7,
1'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
27.30,
11.6,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
28.30,
11.6,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
30.31,
11.4,
1'
(M. Goiato,
0.22-m
Newtonian);
may
01.13,
9.7,
13'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
0.05 tail in p.a. 308 deg);
   
02.29,
11.1,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
04.78,
10.0,
4'
(M. Mattiazzo,
Swan Hill, Victoria;,
25x100
Binoculars);
   
06.29,
10.8,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
06.72,
9.8,
5.2'
(C. Wyatt,
0.4-m
Newtonian);
   
07.02,
11.0,
5.2'
(C. Hergenrother,
Hakos (remote),
0.2-m
Newtonian);
   
07.28,
10.6,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
08.28,
10.5,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
09.16,
9.7,
15.2'
(C. Hergenrother,
Hakos (remote),
0.2-m
Newtonian);
   
09.17,
9.3,
14.8'
(C. Hergenrother,
Hakos (remote),
0.2-m
Newtonian);
   
09.29,
10.5,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
10.29,
10.4,
2'
(J. de Souza Aguiar,
0.27-m
Newtonian);
   
11.98,
9.7,
5'
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
C/2021 O3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
19.36,
[7.6,
--
(C. Wyatt,
0.25-m
Newtonian);
   
22.37,
[9.0,
--
(M. Mattiazzo,
Swan Hill, Victoria,
0.07-m
Camera lens + CCD);
may
03.45,
[11.0,
--
(K. Yoshimoto,
0.072-m
Camera lens + CCD);
   
08.87,
12.3,
3.9'
(S. Fritsche,
0.1-m
Refractor + CCD);
   
08.88,
12.3,
3.3'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.09 tail in p.a. 125 deg);
   
08.90,
13.4,
2.07'
(N. James,
0.28-m
Schmidt-Cassegrain + CCD);
   
10.15,
12.3,
3.1'
(C. Hergenrother,
Tanque Verde, Arizona, USA,
0.072-m
Refractor);
   
11.86,
12.2,
4.3'
(S. Fritsche,
0.1-m
Refractor + CCD);
   
13.89,
12.2,
4.3'
(S. Fritsche,
0.1-m
Refractor + CCD);
C/2021 P4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
19.89,
13.8,
0.4'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
28.88,
10.5,
4'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
28.89,
12.1,
2.4'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
29.91,
12.9,
1'
(T. Karhula,
Virsbo, Sweden;,
0.305-m
Newtonian);
   
29.95,
14.5,
0.14'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
0.7'
tail in p.a. 7 deg);
may
03.92,
12.4,
1.5'
(C. Harder,
Jeersdorf, f,
0.298-m
Newtonian);
   
04.89,
10.3,
5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
06.87,
11.8,
3.7'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.1 tail in p.a. 348 deg);
   
08.90,
11.5,
5.5'
(S. Fritsche,
0.1-m
Refractor + CCD;
0.06 tail in p.a. 340 deg);
   
10.16,
12.6,
1.8'
(C. Hergenrother,
Tanque Verde, Arizona, USA,
0.072-m
Refractor);
C/2021 U5 (Catalina)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
25.90,
18.1,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
02.89,
17.8,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
C/2021 X1 (Maury-Attard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
07.80,
17.3,
--
(G. Pappa,
Namibia (remote control),
0.5-m
Cassegrain reflector + CCD);
C/2022 A2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
25.92,
18.1,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
may
04.82,
18.1,
0.5'
(T. Lehmann,
0.2-m
Newtonian + CCD;
0.2'
tail in p.a. 140 deg);
   
05.88,
18.2,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
   
07.79,
17.7,
--
(G. Pappa,
Namibia (remote control),
0.5-m
Cassegrain reflector + CCD);
   
13.84,
17.6,
--
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
C/2022 A3 (Lemmon-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
25.98,
19.8,
0.38'
(K. Hills,
Comphot version 1.4.4;,
0.5-m
Newtonian + CCD);
C/2022 E3 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr
20.10,
16.4,
1.1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
22.03,
15.8,
0.19'
(A. Novichonok,
1.015-m
Ritchey-Chretien + CCD;
19" tail in p.a. 241 deg);
   
22.46,
16.1,
0.5'
(T. Lehmann,
PieTown (remote),
0.4-m
Newtonian + CCD;
0.3'
tail in p.a. 235 deg);
   
25.16,
15.7,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
25.40,
15.9,
0.3'
(K. Yoshimoto,
0.51-m
Newtonian + CCD;
0.4'
tail in p.a. 240 deg);
   
28.09,
15.9,
0.8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
   
29.07,
15.5,
0.4'
(M. Lostak,
0.2-m
Newtonian + CCD);
   
30.02,
15.5,
0.14'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
30.14,
15.7,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
may
01.14,
15.7,
0.7'
(T. Lehmann,
Hakos (remote),
0.2-m
Newtonian + CCD;
0.3'
tail in p.a. 237 deg);
   
03.09,
15.6,
0.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.3'
tail in p.a. 230 deg);
   
06.13,
15.6,
0.4'
(P. Carson,
Fegenal de la Sierra;,
0.315-m
Cassegrain reflector + CCD);
   
07.07,
15.5,
0.6'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.4'
tail in p.a. 231 deg);
   
07.99,
15.0,
0.19'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
   
08.17,
15.7,
--
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);
   
09.07,
16.0,
0.7'
(S. Fritsche,
0.1-m
Refractor + CCD);
   
09.08,
15.5,
0.5'
(T. Lehmann,
0.279-m
Newtonian + CCD;
0.5'
tail in p.a. 231 deg);
   
11.94,
15.5,
--
(A. Novichonok,
0.36-m
Ritchey-Chretien;
15" tail in p.a. 239 deg);
C/2022 J1 (Maury-Attard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
05.81,
17.7,
0.4'
(K. Yoshimoto,
0.51-m
Newtonian);
P/2020 WJ5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may
03.87,
17.6,
--
(G. Pappa,
Namibia (remote control),
0.2-m
Newtonian + CCD);