12P/Pons-Brooks
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
10.34,
15.0,
1.4'
(T. Lehmann,
Chile (remote),
0.25-m
Newtonian + CCD);
29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
07.70,
10.6,
4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
06.90,
11.5,
4'
(D. Heggie,
Edinburgh, UK,
0.05-m
Refractor + CCD);
   
06.74,
11.9,
1.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
06.19,
10.8,
6.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
05.68,
11.7,
1.4'
(O. Miyazaki,
0.32-m
Newtonian);
   
05.68,
11.0,
3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
05.06,
12.3,
0.5'
(E. Banach,
0.25-m
Newtonian);
   
04.98,
13.4,
0.5'
(B. Czeglédi,
Hajdúszoboszló, Hungary,
0.3-m
Newtonian);
   
04.67,
11.1,
2.9'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
04.64,
11.3,
1'
(O. Miyazaki,
0.32-m
Newtonian);
   
03.96,
11.0,
9'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD);
   
03.90,
12.1,
0.5'
(E. Banach,
0.25-m
Newtonian);
   
03.61,
11.2,
2'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
02.97,
12.1,
1'
(T. Sciezor,
Cracow,
0.06-m
Camera lens + CCD);
   
02.95,
11.3,
2.6'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
   
01.98,
11.6,
4.5'
(W. Kutschera,
0.25-m
Newtonian);
   
01.62,
11.7,
3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
jan
32.00,
12.5,
1'
(T. Sciezor,
Cracow,
0.06-m
Camera lens + CCD);
   
31.99,
11.6,
4.2'
(W. Kutschera,
0.13-m
Newtonian);
   
31.97,
11.7,
2'
(M. Filipek,
0.4-m
Newtonian);
   
31.97,
12.3,
2.5'
(T. Karhula,
Virsbo, Sweden,
0.305-m
Newtonian);
   
31.91,
11.8,
2'
(A. Kammerer,
Teufelsmuehle (Black Forest), Germany,
0.397-m
Newtonian);
   
31.67,
11.7,
2.1'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
31.63,
12.2,
2.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
30.96,
10.3,
6.8'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
   
30.91,
12.4,
1.9'
(T. Sciezor,
Cracow,
0.06-m
Camera lens + CCD);
   
30.62,
11.8,
3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
30.62,
12.7,
2'
(O. Miyazaki,
0.32-m
Newtonian);
   
29.95,
12.2,
2.2'
(T. Sciezor,
Rzozów,
0.06-m
Camera lens + CCD);
   
29.91,
12.1,
2.1'
(D. Heggie,
Edinburgh, Scotland,
0.114-m
Prime focus of a reflector + CCD);
   
29.69,
11.6,
2.2'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
29.63,
12.4,
1.8'
(O. Miyazaki,
0.32-m
Newtonian);
   
28.99,
11.5,
6.58'
(K. Hills,
0.5-m
Newtonian + CCD);
   
28.03,
11.3,
7.33'
(K. Hills,
0.5-m
Newtonian + CCD);
   
28.00,
13.1,
1.3'
(T. Sciezor,
Cracow,
0.06-m
Camera lens + CCD);
   
27.97,
11.7,
3.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
26.97,
12.3,
1.2'
(T. Sciezor,
Cracow,
0.06-m
Camera lens + CCD);
   
26.96,
11.6,
5.83'
(K. Hills,
0.5-m
Newtonian + CCD);
   
25.98,
11.6,
6.02'
(K. Hills,
0.5-m
Newtonian + CCD);
   
25.58,
12.6,
1'
(O. Miyazaki,
0.32-m
Newtonian);
   
23.39,
11.2,
5'
(N. Paul,
iTelescope Utah Desert Remote Observatory USA,
0.28-m
Schmidt-Cassegrain + CCD);
   
23.03,
11.6,
6.02'
(K. Hills,
0.5-m
Newtonian + CCD);
   
21.93,
11.2,
3.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
21.91,
12.2,
1.2'
(A. Kammerer,
Teufelsmuehle (Black Forest), Germany,
0.397-m
Newtonian);
   
20.72,
11.6,
2.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
20.63,
11.5,
5'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
20.11,
11.0,
7.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
19.16,
11.6,
4.3'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD);
   
19.13,
11.4,
5.2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
19.12,
12.4,
1.9'
(A. Pearce,
Namibia,
0.36-m
Schmidt-Cassegrain + CCD);
   
18.88,
11.8,
2'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
   
18.87,
11.5,
1.5'
(C. Harder,
Jeersdorf h,
0.252-m
Newtonian);
   
18.84,
11.4,
3.3'
(T. Sciezor,
Cracow,
0.06-m
Camera lens + CCD);
   
17.89,
10.8,
5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
   
14.21,
11.5,
3.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
13.23,
11.4,
3.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
11.34,
11.1,
5'
(N. Paul,
iTelescope Deep Sky Chile, Rio Hurtado,
0.51-m
Schmidt-Cassegrain + CCD);
   
11.11,
11.0,
4.4'
(A. Pearce,
Namibia,
0.36-m
Schmidt-Cassegrain + CCD);
   
10.81,
13.1,
1.1'
(O. Miyazaki,
0.32-m
Newtonian);
   
10.81,
11.5,
5.3'
(K. Harikae,
0.15-m
Newtonian + CCD);
   
10.74,
12.3,
1.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
10.36,
11.3,
5.3'
(N. Paul,
iTelescope Deep Sky Chile, Rio Hurtado,
0.95-m
Newtonian + CCD);
   
10.27,
10.5,
5.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
09.79,
11.1,
4.3'
(K. Harikae,
0.15-m
Newtonian + CCD);
   
09.69,
11.1,
3.7'
(A. Pearce,
Perth Observatory, Bickley (MPC 323),
0.35-m
Schmidt-Cassegrain + CCD);
30P/Reinmuth
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
28.26,
19.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
32P/Comas Sola
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
10.20,
19.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
33P/Daniel
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
27.15,
18.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
18.99,
18.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
43P/Wolf-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
26.91,
17.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
19.84,
16.1,
1.8'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
1.4'
tail in p.a. 64 deg);
   
16.82,
17.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
13.78,
16.1,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
49P/Arend-Rigaux
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
03.73,
16.2,
0.31'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
jan
26.83,
17.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
25.54,
16.3,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
17.73,
15.8,
1.3'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
16.55,
16.7,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
15.86,
17.4,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.56,
16.6,
0.3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
09.77,
15.3,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
74P/Smirnova-Chernykh
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
17.87,
18.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
95P/Chiron
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
25.85,
18.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
130P/McNaught-Hughes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
18.87,
19.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
154P/Brewington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
23.05,
19.5,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
195P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
26.05,
18.3,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
18.98,
17.5,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
242P/Spahr
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
26.61,
18.1,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
25.87,
18.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
16.90,
18.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
16.66,
18.1,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
253P/PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
26.84,
19.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
268P/Bernardi
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
23.07,
20.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
276P/Vorobjov
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
01.55,
17.5,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
jan
31.54,
17.5,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
30.56,
17.7,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
19.57,
18.0,
0.3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
16.58,
17.7,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
13.58,
17.8,
0.3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
11.58,
17.9,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
305P/Skiff
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
01.54,
18.3,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
jan
30.54,
17.8,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
19.54,
17.4,
0.3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
16.56,
17.9,
0.3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
11.56,
17.6,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
333P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
01.52,
17.3,
0.2'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD;
0.5'
tail);
jan
18.68,
15.5,
0.44'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
   
17.78,
14.5,
2.5'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.05° tail in p.a. 38 deg);
   
12.75,
14.2,
2.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.08° tail in p.a. 38 deg);
   
10.77,
15.4,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.7'
tail in p.a. 48 deg);
472P/NEAT-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
30.68,
16.0,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
0.3'
tail in p.a. 15 deg);
   
29.61,
16.4,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 18 deg);
   
27.09,
17.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
26.56,
15.9,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
20.61,
16.0,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
17.65,
16.1,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
13.91,
16.0,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
487P/SidingSpring
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
26.94,
17.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
19.97,
17.4,
0.5'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
16.85,
17.3,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
496P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
27.85,
16.9,
0.56'
(K. Hills,
0.5-m
Newtonian + CCD);
   
18.88,
15.1,
3.2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
1.1'
tail in p.a. 97 deg);
   
16.84,
17.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
13.81,
16.3,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
11.55,
17.0,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.56,
15.5,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
   
01.65,
15.8,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
jan
29.71,
15.7,
0.7'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
28.54,
15.6,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
28.18,
16.3,
0.4'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
   
28.17,
15.9,
0.4'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
   
27.67,
15.8,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
26.64,
15.9,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
25.55,
15.9,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
20.39,
16.3,
0.21'
(S. Badcock,
Otaki, New Zealand,
0.06-m
Refractor + CCD;
5.6" tail in p.a. 321 deg);
   
18.68,
15.6,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
17.70,
16.3,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
16.72,
16.2,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
15.62,
16.4,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
01.58,
16.4,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
01.57,
17.0,
0.2'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
jan
31.58,
16.0,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
29.60,
16.0,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
28.57,
16.4,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
27.88,
16.8,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
27.60,
16.2,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
26.55,
16.2,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
20.59,
16.5,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
19.91,
15.2,
2.1'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
1.1'
tail in p.a. 116 deg);
   
19.60,
16.5,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
18.95,
16.3,
0.33'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
   
18.82,
15.2,
1.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.8'
tail in p.a. 123 deg);
   
18.54,
16.3,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
18.01,
17.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
15.57,
16.3,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
09.94,
15.6,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.60,
16.4,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2.9'
tail in p.a. 96 deg);
   
01.75,
16.4,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
jan
31.65,
15.8,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
30.75,
16.1,
0.7'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
29.73,
16.3,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
28.27,
16.5,
0.4'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
   
28.27,
16.3,
0.4'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD;
0.2'
tail in p.a. 147 deg);
   
26.61,
16.1,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 89 deg);
C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.58,
17.2,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
   
01.67,
17.1,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
jan
30.73,
16.7,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
27.76,
16.9,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
16.70,
17.0,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
10.60,
16.7,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.76,
14.0,
1.2'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
3.1'
tail in p.a. 243 deg);
jan
31.78,
14.5,
0.7'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
29.86,
14.3,
0.9'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
5.5'
tail in p.a. 245 deg);
   
28.27,
14.6,
0.94'
(K. Hills,
0.5-m
Newtonian + CCD);
   
19.23,
14.4,
1.4'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
1.3'
tail in p.a. 240 deg);
   
16.25,
15.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
13.07,
14.0,
0.8'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
19.73,
16.0,
1.2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
10.75,
16.3,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
09.79,
17.0,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.72,
15.3,
0.2'
(M. Mančuška,
Boldog (Quattro 6) (MPC 247),
0.15-m
Newtonian + CCD;
6.4" tail in p.a. 55 deg);
   
03.75,
14.3,
0.7'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
   
01.83,
13.2,
0.9'
(W. Kutschera,
0.508-m
Newtonian);
   
01.54,
14.1,
0.4'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD;
7'
tail in p.a. 55 deg);
jan
31.90,
13.2,
0.7'
(T. Karhula,
Virsbo, Sweden,
0.305-m
Newtonian);
   
31.43,
12.9,
1.1'
(O. Miyazaki,
0.32-m
Newtonian);
   
30.76,
13.4,
0.9'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
   
29.43,
13.2,
0.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
27.75,
14.0,
0.7'
(C. Harder,
Jeersdorf f,
0.531-m
Newtonian);
   
26.92,
14.6,
0.75'
(K. Hills,
0.5-m
Newtonian + CCD);
   
20.43,
13.8,
0.8'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
8'
tail in p.a. 67 deg);
   
19.78,
13.6,
2.1'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.19° tail in p.a. 68 deg);
   
19.73,
14.1,
0.75'
(C. Harder,
Jeersdorf f,
0.531-m
Newtonian);
   
18.83,
14.0,
1'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
6.8'
tail in p.a. 66 deg);
   
18.44,
13.1,
0.7'
(O. Miyazaki,
0.32-m
Newtonian);
   
17.81,
13.8,
1.4'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.14° tail in p.a. 66 deg);
   
17.41,
12.8,
0.5'
(O. Miyazaki,
0.32-m
Newtonian);
   
16.94,
14.0,
1'
(G. Pappa,
Piemonte,Italy (remote control),
0.3-m
Ritchey-Chretien + CCD);
   
12.79,
13.7,
1.3'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.13° tail in p.a. 69 deg);
   
09.78,
13.8,
0.6'
(K. Harikae,
0.15-m
Newtonian + CCD);
C/2022 L2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.65,
17.5,
0.3'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
01.77,
16.8,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
jan
30.81,
17.5,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
29.76,
17.0,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
27.62,
16.3,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
19.42,
17.3,
--
(S. Badcock,
Otaki, New Zealand,
0.06-m
Refractor + CCD);
   
17.69,
17.1,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
10.32,
16.9,
0.6'
(T. Lehmann,
Chile (remote),
0.25-m
Newtonian + CCD);
   
09.67,
16.3,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
30.74,
15.0,
0.5'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
   
18.73,
15.4,
1.2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
1.3'
tail in p.a. 243 deg);
   
17.83,
16.5,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
13.75,
15.0,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1'
tail in p.a. 230 deg);
C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.62,
14.8,
0.7'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 247 deg);
   
01.59,
15.9,
0.25'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
jan
31.61,
15.4,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
29.63,
15.4,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 249 deg);
   
28.58,
15.1,
0.7'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
27.92,
15.7,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
27.57,
15.0,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
27.06,
16.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
26.61,
15.1,
0.7'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
20.83,
14.7,
0.6'
(M. Paradowski,
0.15-m
Newtonian + CCD);
   
20.82,
15.3,
0.6'
(M. Paradowski,
0.15-m
Newtonian + CCD);
   
20.62,
15.6,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
20.51,
15.0,
0.4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
1'
tail in p.a. 250 deg);
   
19.64,
15.3,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
18.97,
15.4,
0.9'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
1.2'
tail in p.a. 251 deg);
   
18.95,
15.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
18.56,
15.3,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
1.2'
tail in p.a. 242 deg);
   
17.66,
15.0,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 260 deg);
   
16.94,
15.5,
0.5'
(G. Pappa,
Piemonte,Italy (remote control),
0.3-m
Ritchey-Chretien + CCD);
   
16.60,
15.4,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
15.58,
15.2,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
09.98,
14.4,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2022 R6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.61,
16.1,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
   
01.74,
15.9,
0.46'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
jan
30.77,
16.1,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
29.80,
16.8,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
27.78,
16.0,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
26.97,
17.4,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
19.69,
16.0,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
0.2'
tail in p.a. 144 deg);
   
18.59,
16.1,
0.2'
(A. Pearce,
Perth Observatory, Bickley (MPC 323),
0.35-m
Schmidt-Cassegrain + CCD);
   
17.68,
16.4,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
C/2022 U3 (Bok)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
27.08,
18.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
03.88,
12.4,
0.8'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
3'
tail in p.a. 5 deg);
jan
18.68,
[11.1,
--
(T. Sciezor,
Cracow,
0.06-m
Camera lens + CCD);
   
10.72,
10.3,
2.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
7.1'
tail in p.a. 49 deg);
C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
23.19,
16.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
19.19,
16.3,
0.8'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.9'
tail in p.a. 219 deg);
C/2023 Q1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
01.64,
16.9,
0.2'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
jan
30.44,
14.3,
0.6'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
29.88,
16.6,
0.5'
(D. Heggie,
Edinburgh, Scotland,
0.114-m
Prime focus of a reflector + CCD);
   
28.21,
16.4,
0.56'
(K. Hills,
0.5-m
Newtonian + CCD);
   
27.94,
16.5,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
24.13,
16.3,
0.56'
(K. Hills,
0.5-m
Newtonian + CCD);
   
20.06,
14.5,
3.2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.05° tail in p.a. 275 deg);
   
19.05,
16.8,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
19.02,
14.6,
3.3'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
1.2'
tail in p.a. 277 deg);
   
18.83,
16.2,
0.5'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
1.2'
tail in p.a. 277 deg);
   
17.35,
15.9,
0.33'
(N. Paul,
iTelescope Observatory, Beryl Junction (MPC U94),
0.25-m
Newtonian + CCD);
   
14.79,
16.3,
0.3'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
0.3'
tail in p.a. 280 deg);
   
13.29,
15.9,
0.34'
(N. Paul,
iTelescope Observatory, Beryl Junction (MPC U94),
0.28-m
Schmidt-Cassegrain + CCD);
   
10.79,
15.6,
1'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
09.88,
15.9,
0.5'
(D. Heggie,
Edinburgh, Scotland,
0.114-m
Prime focus of a reflector + CCD);
   
09.74,
15.4,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.7'
tail in p.a. 283 deg);
C/2023 R1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
09.81,
17.2,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2023 T3 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.71,
16.5,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
   
01.81,
16.7,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 281 deg);
jan
30.84,
16.7,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
27.74,
16.3,
0.46'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
0.9'
tail in p.a. 273 deg);
   
17.74,
16.7,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
09.77,
16.5,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
C/2023 X2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
16.91,
19.2,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
04.64,
16.6,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
   
01.72,
16.3,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
01.62,
16.4,
0.3'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
jan
31.63,
16.3,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
27.59,
15.8,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
20.58,
16.1,
0.4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
20.01,
16.2,
0.6'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
18.58,
16.3,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
16.62,
16.4,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
15.59,
16.1,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
11.85,
16.0,
0.5'
(G. Pappa,
Namibia (remote control),
0.36-m
Ritchey-Chretien + CCD);
   
10.58,
16.1,
0.4'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
C/2024 B1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
16.27,
17.4,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
06.22,
17.9,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
jan
20.27,
18.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
20.20,
17.8,
0.6'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
16.26,
18.4,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2024 G3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
30.94,
4.5,
12'
(M. Goiato,
0.007-m
Naked eye;
6° tail in p.a. 100 deg);
   
30.94,
4.7,
10'
(M. Goiato,
7x50
Binoculars;
9° tail in p.a. 100 deg);
   
29.92,
4.9,
7'
(M. Goiato,
7x50
Binoculars;
7° tail in p.a. 95 deg);
   
28.92,
4.7,
6'
(M. Goiato,
7x50
Binoculars;
7° tail in p.a. 95 deg);
   
27.93,
4.5,
8'
(M. Goiato,
7x50
Binoculars;
8° tail in p.a. 92 deg);
   
27.41,
4.6,
7.5'
(C. Wyatt,
15x70
Binoculars;
8° tail in p.a. 87 deg);
   
23.95,
3.2,
8'
(W. Souza,
10x50
Binoculars;
3.5° tail);
   
23.95,
3.5,
8'
(W. Souza,
20x80
Binoculars;
3° tail);
   
22.01,
2.5,
7'
(A. Anunziato,
Parana,
1.05-m
Maksutov;
12° tail in p.a. 100 deg);
   
21.96,
2.0,
10'
(M. Goiato,
0.007-m
Naked eye;
15° tail in p.a. 90 deg);
   
21.96,
2.2,
8'
(M. Goiato,
7x50
Binoculars;
10° tail in p.a. 90 deg);
   
20.96,
2.4,
4'
(M. Goiato,
7x50
Binoculars;
6° tail in p.a. 105 deg);
   
20.94,
3.4,
4'
(L. Camargo da Silva,
São José dos Campos, São Paulo, Brazil,
7x50
Binoculars;
3° tail in p.a. 90 deg);
   
19.40,
1.0,
--
(D. Edwards,
Peak Crossing, Queensland, Australia,
10x50
Binoculars;
5° tail in p.a. 110 deg);
   
18.96,
-0.6,
2'
(M. Goiato,
20x100
Binoculars;
3° tail in p.a. 100 deg);
   
18.96,
-0.8,
2'
(M. Goiato,
7x50
Binoculars;
4° tail in p.a. 100 deg);
   
18.96,
-0.9,
--
(M. Goiato,
0.007-m
Naked eye;
4° tail in p.a. 100 deg);
   
18.94,
0.0,
2'
(W. Souza,
Sao Paulo - SP, Brazil,
10x50
Binoculars;
0.5° tail);
   
17.75,
-1.0,
--
(A. Russo,
Gibraltar,
15x50
Binoculars;
0.5° tail);
   
17.43,
-0.8,
--
(J. Pile,
San Rafael, Bulacan, Philippines,
Naked eye;
2.5° tail in p.a. 90 deg);
   
17.43,
-1.0,
2'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
2° tail in p.a. 90 deg);
   
17.34,
-0.5,
1'
(Y. Nagai,
20x100
Binoculars;
0.3° tail in p.a. 85 deg);
   
16.99,
-1.0,
--
(B. Young,
Tulsa OK USA,
8x40
Binoculars);
   
16.75,
-1.5,
--
(A. Russo,
Gibraltar,
15x50
Binoculars;
0.5° tail);
   
16.58,
-0.5,
--
(A. Ansari,
tehran,
0.03-m
Camera lens + CCD);
   
16.42,
-0.8,
2'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
1° tail in p.a. 85 deg);
   
16.39,
-1.5,
1.9'
(T. Lovejoy,
0.075-m
Camera lens + CCD);
   
16.36,
-1.5,
--
(S. Yoshida,
0.066-m
Refractor;
0.3° tail in p.a. 75 deg);
   
16.23,
-1.4,
1.3'
(T. Lovejoy,
0.05-m
Camera lens + CCD);
   
16.12,
-1.3,
1.5'
(C. Hergenrother,
10x50
Binoculars;
0.5° tail);
   
16.10,
-1.5,
1.3'
(T. Lovejoy,
0.05-m
Camera lens + CCD);
   
16.02,
-1.8,
1.3'
(T. Lovejoy,
0.05-m
Camera lens + CCD);
   
15.93,
-1.2,
1.5'
(M. Goiato,
20x100
Binoculars;
0.2° tail in p.a. 70 deg);
   
15.93,
-1.4,
1.5'
(M. Goiato,
7x50
Binoculars;
0.3° tail in p.a. 70 deg);
   
15.74,
-1.5,
1.2'
(J. Gonzalez Suarez,
10x50
Binoculars;
0.25° tail in p.a. 80 deg);
   
15.38,
-1.5,
--
(B. Ai,
OUCFivekidsMountain(FKMountain),
20x80
Binoculars;
0.2° tail);
   
15.25,
-2.6,
1.3'
(T. Lovejoy,
0.05-m
Camera lens + CCD);
   
15.15,
-2.7,
1.3'
(T. Lovejoy,
0.05-m
Camera lens + CCD);
   
15.12,
-2.5,
--
(C. Hergenrother,
Naked eye);
   
15.10,
-2.4,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
15.08,
-2.4,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
15.06,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
15.04,
-2.9,
1.3'
(T. Lovejoy,
0.05-m
Camera lens + CCD);
   
15.04,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
15.02,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
15.00,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.98,
-2.8,
1.3'
(T. Lovejoy,
0.05-m
Camera lens + CCD);
   
14.98,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.95,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.94,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.91,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.90,
-2.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.85,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.83,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.81,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.79,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.77,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.75,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.73,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.72,
[-2.0,
1'
(C. Labordena,
La Vall de Alba,
10x50
Binoculars;
10'
tail);
   
14.70,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.69,
-2.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.67,
-1.5,
--
(A. Kammerer,
Karlsruhe, Germany,
9x63.0
Binoculars;
0.15° tail in p.a. 50 deg);
   
14.66,
-2.7,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.65,
-2.7,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.64,
-2.5,
0.5'
(B. Granslo,
Skogen, Oslo, Norway,
10x42.0
Binoculars;
0.1° tail in p.a. 50 deg);
   
14.62,
-2.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.60,
-2.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.58,
-2.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.56,
-2.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.54,
-2.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.52,
-2.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.50,
-2.9,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.48,
-2.9,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.45,
-3.0,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.45,
-3.0,
0.2'
(P. Guzik,
25x100
Binoculars;
2'
tail in p.a. 40 deg);
   
14.44,
-3.1,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.41,
-3.1,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.40,
-3.1,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.37,
-3.2,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.35,
-3.2,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.33,
-3.3,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.31,
-3.3,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.29,
-3.3,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.27,
-3.3,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.25,
-3.3,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.23,
-3.4,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.20,
-3.4,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.19,
-3.4,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.16,
-3.4,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.15,
-3.4,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.12,
-3.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.10,
-3.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.08,
-3.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.06,
-3.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.04,
-3.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.02,
-3.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
14.00,
-3.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.98,
-3.5,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.96,
-1.8,
1'
(T. Lovejoy,
0.05-m
Camera lens + CCD);
   
13.95,
-3.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.94,
-3.7,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.91,
-3.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.90,
-3.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.85,
-3.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.83,
-3.7,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.81,
-3.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.79,
-3.6,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.77,
-3.7,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.75,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.73,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.70,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.69,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.66,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.65,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.62,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.60,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.58,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.56,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.54,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.52,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.50,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.48,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.45,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.44,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.41,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.40,
-3.8,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.35,
-3.7,
38'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.33,
-3.7,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.31,
-3.7,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.29,
-3.6,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.27,
-3.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.25,
-3.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.23,
-3.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.20,
-3.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.19,
-3.4,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.16,
-3.4,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.15,
-3.3,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.12,
-3.3,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.10,
-3.3,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.08,
-3.3,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.06,
-3.3,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.04,
-3.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.02,
-3.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
13.00,
-3.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.98,
-3.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.95,
-3.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.94,
-3.1,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.91,
-3.1,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.90,
-3.1,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.85,
-3.0,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.83,
-3.0,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.81,
-2.9,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.79,
-2.8,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.77,
-2.8,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.75,
-2.7,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.73,
-2.7,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.70,
-2.6,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.69,
-2.6,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.66,
-2.6,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.65,
-2.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.62,
-2.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.60,
-2.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.58,
-2.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.56,
-2.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.54,
-2.4,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.52,
-2.4,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.51,
-2.3,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.50,
-2.3,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.48,
-2.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.45,
-2.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.44,
-2.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.40,
-2.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.37,
-2.2,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.35,
-2.1,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.33,
-2.0,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.31,
-1.6,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
12.29,
-1.0,
--
(C. Harder,
Bullerberg, Westerholz,
10x50
Binoculars;
5'
tail in p.a. 280 deg);
   
12.00,
-1.7,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.98,
-1.7,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.95,
-1.9,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.94,
-1.7,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.91,
-1.7,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.90,
-1.6,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.85,
-1.6,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.83,
-1.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.81,
-1.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.79,
-1.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.77,
-1.4,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.75,
-1.5,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.73,
-1.4,
37.3'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.65,
-1.1,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.60,
-1.1,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.58,
-1.1,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.56,
-1.1,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.54,
-1.1,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.52,
-1.0,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.50,
-0.9,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.48,
-1.0,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.45,
-0.9,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.44,
-0.8,
28'
(M. Paradowski,
SOHO,
0.008-m
Coronagraph + CCD);
   
11.28,
-1.0,
1'
(V. Gonano,
Udine, Italy,
20x80
Binoculars;
10'
tail in p.a. 280 deg);
   
11.13,
[-2.5,
--
(J. Xiong,
Ocean University of China,
Nonex80
Binoculars);
   
10.89,
-1.2,
1'
(O. Miyazaki,
18x50
Binoculars;
5'
tail in p.a. 280 deg);
   
10.89,
-1.0,
1'
(R. Aikawa,
7x50
Binoculars;
10'
tail in p.a. 290 deg);
   
10.88,
-1.0,
1'
(Y. Nagai,
0.02-m
Camera lens + CCD;
0.1° tail in p.a. 275 deg);
   
09.91,
-0.2,
1.6'
(K. Yoshimoto,
0.077-m
Camera lens + CCD;
7'
tail in p.a. 275 deg);
C/2024 J2 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
18.76,
15.6,
1.2'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
10.74,
15.6,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
   
10.71,
16.8,
0.8'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
06.24,
16.1,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2024 M1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
26.93,
17.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
20.77,
16.5,
0.6'
(M. Paradowski,
0.15-m
Newtonian + CCD);
   
20.75,
16.1,
0.6'
(M. Paradowski,
0.15-m
Newtonian + CCD);
   
20.47,
16.4,
0.2'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
   
19.94,
17.1,
0.5'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
19.74,
16.2,
--
(C. Harder,
Jeersdorf f,
0.531-m
Newtonian);
   
18.93,
16.9,
0.5'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
16.86,
16.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
   
12.81,
16.4,
0.4'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD);
   
10.75,
16.3,
0.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD);
   
09.90,
16.1,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2024 N4 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
19.08,
18.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2024 S1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
27.89,
[19.0,
--
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2024 Y1 (Masek)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
24.13,
17.0,
1'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD);
   
24.13,
15.8,
1.9'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD);
   
18.06,
15.6,
1.8'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
   
15.60,
15.8,
1.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
11.85,
15.0,
1.3'
(G. Pappa,
Namibia (remote control),
0.36-m
Ritchey-Chretien + CCD);
P/2015 CD60 (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
jan
15.81,
18.0,
0.4'
(G. Pappa,
Piemonte,Italy (remote control),
0.3-m
Ritchey-Chretien + CCD);
P/2019 Y3 (Catalina)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
05.84,
18.2,
0.2'
(J. Ryske,
Y71 Makroskooppi, Fregenal de la Sierra, Spain,
0.3-m
Ritchey-Chretien + CCD;
0.25'
tail in p.a. 80 deg);
jan
30.83,
18.2,
--
(J. Ryske,
Y71 Makroskooppi, Fregenal de la Sierra, Spain,
0.3-m
Ritchey-Chretien + CCD);
   
28.09,
18.7,
0.3'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD;
0.2'
tail in p.a. 67 deg);
   
25.86,
18.6,
--
(J. Ryske,
Y71 Makroskooppi, Fregenal de la Sierra, Spain,
0.3-m
Ritchey-Chretien + CCD);
   
18.84,
19.0,
--
(J. Ryske,
Y71 Makroskooppi, Fregenal de la Sierra, Spain,
0.3-m
Ritchey-Chretien + CCD);
P/2023 S1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
feb
06.17,
14.6,
1.3'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
   
04.67,
14.8,
0.7'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
1.2'
tail in p.a. 285 deg);
   
01.66,
15.8,
0.3'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
   
01.61,
15.1,
0.9'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
2'
tail in p.a. 295 deg);
jan
31.95,
13.7,
0.8'
(W. Kutschera,
0.508-m
Newtonian);
   
31.66,
15.0,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
30.60,
14.8,
0.9'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
1.6'
tail in p.a. 292 deg);
   
30.49,
15.2,
0.6'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
2'
tail in p.a. 295 deg);
   
29.68,
15.1,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
1.8'
tail in p.a. 290 deg);
   
27.69,
15.2,
0.8'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 285 deg);
   
23.04,
15.4,
0.94'
(K. Hills,
0.5-m
Newtonian + CCD);
   
20.64,
15.8,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
19.07,
14.6,
2.7'
(S. Fritsche,
Koeditz,
0.279-m
Newtonian + CCD;
0.05° tail in p.a. 295 deg);
   
17.72,
15.7,
0.5'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);
   
09.68,
15.1,
0.6'
(A. Pearce,
Perth Observatory,
0.35-m
Schmidt-Cassegrain + CCD);