3I/ATLAS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.00,
15.9,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.00,
17.2,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.99,
17.0,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.80,
17.8,
0.23'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.2-m
Schmidt-Cassegrain + CCD);
22.84,
16.3,
0.4'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD);
21.92,
15.8,
0.8'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 98 deg);
21.59,
15.6,
0.6'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
21.54,
15.6,
0.5'
(T. Yusa,
0.05-m
Refractor + CCD);
20.87,
14.9,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.86,
16.3,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.86,
15.9,
1.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.59,
16.0,
0.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
20.52,
15.6,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.08,
16.0,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD);
19.94,
13.5,
3.1'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
19.81,
15.1,
0.6'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD);
19.67,
15.8,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
19.60,
15.0,
0.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
19.52,
15.6,
0.7'
(A. Pearce,
Perth Observatory, Bickley (MPC 323),
0.35-m
Schmidt-Cassegrain + CCD);
18.85,
17.0,
0.23'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.2-m
Schmidt-Cassegrain + CCD);
18.78,
16.1,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.78,
14.3,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.77,
15.6,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.59,
15.2,
0.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
18.52,
15.6,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
18.10,
15.4,
0.6'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
18.10,
15.9,
0.6'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
17.85,
16.8,
0.29'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
17.65,
15.9,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
17.59,
15.4,
0.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
17.44,
16.7,
0.26'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
16.92,
16.0,
0.56'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
16.84,
16.9,
0.44'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD;
1.9'
tail in p.a. 94 deg);
16.59,
15.1,
0.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
16.55,
15.7,
0.5'
(T. Yusa,
0.05-m
Refractor + CCD);
16.52,
15.5,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.2'
tail in p.a. 93 deg);
15.99,
16.8,
0.38'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
15.52,
14.6,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
14.88,
16.2,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1.2'
tail in p.a. 93 deg);
14.82,
15.0,
--
(G. van Buitenen,
Dordrecht, Sterrenburg (G06),
0.203-m
Ritchey-Chretien + CCD);
14.82,
16.2,
0.48'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD);
14.59,
15.0,
0.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
14.52,
14.7,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 86 deg);
14.08,
13.7,
1.2'
(W. Souza,
0.05-m
Refractor + CCD);
13.80,
14.4,
1'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
13.59,
15.1,
0.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
13.53,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.2'
tail in p.a. 91 deg);
12.59,
14.8,
0.9'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
0.7'
tail in p.a. 102 deg);
12.56,
14.8,
1'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
4.1'
tail in p.a. 94 deg);
12.53,
14.5,
1'
(T. Yusa,
0.05-m
Refractor + CCD;
0.9'
tail in p.a. 103 deg);
12.53,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.7'
tail in p.a. 95 deg);
12.51,
14.8,
0.9'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
2.5'
tail in p.a. 95 deg);
11.61,
14.8,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.5'
tail in p.a. 92 deg);
11.58,
15.0,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
10.09,
15.1,
1.1'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD;
1'
tail in p.a. 91 deg);
10.08,
14.5,
1.1'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD;
1.7'
tail in p.a. 90 deg);
10.00,
14.6,
0.44'
(S. Shurpakov,
0.15-m
Volosov-Newtonian + CCD;
2'
tail in p.a. 91 deg);
09.87,
16.7,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.78,
15.3,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2'
tail in p.a. 96 deg);
07.90,
15.2,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.2'
tail in p.a. 93 deg);
07.62,
14.6,
1'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
1'
tail in p.a. 103 deg);
07.53,
14.8,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.1'
tail in p.a. 93 deg);
07.42,
14.8,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD;
0.8'
tail in p.a. 91 deg);
05.48,
14.5,
1'
(T. Yusa,
0.05-m
Refractor + CCD;
0.4'
tail in p.a. 99 deg);
04.92,
14.5,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.4'
tail in p.a. 92 deg);
04.49,
14.6,
0.8'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
1.8'
tail in p.a. 95 deg);
04.19,
14.4,
0.9'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1.7'
tail in p.a. 94 deg);
03.86,
15.6,
0.51'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD;
1.9'
tail in p.a. 98 deg);
02.84,
14.1,
1'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1.7'
tail in p.a. 94 deg);
02.80,
13.7,
1'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD;
2'
tail in p.a. 80 deg);
jan
30.50,
14.3,
1'
(T. Yusa,
0.05-m
Refractor + CCD;
2.2'
tail in p.a. 97 deg);
29.62,
13.8,
1.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.83,
15.3,
1'
(R. Arnold,
Skye, Scotland,
0.2-m
Schmidt-Cassegrain + CCD;
2'
tail);
10P/Tempel 2
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
25.21,
18.6,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
24P/Schaumasse
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
27.19,
10.6,
5'
(A. Kammerer,
Teufelsmuehle (Black Forest), Germany,
0.397-m
Newtonian);
27.01,
9.7,
14.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
6.8'
tail in p.a. 290 deg);
27.00,
10.7,
12.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4.8'
tail in p.a. 288 deg);
27.00,
10.1,
10'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.2'
tail in p.a. 288 deg);
26.76,
10.5,
6.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
7.2'
tail in p.a. 285 deg);
26.17,
10.2,
5.3'
(À. Bueno,
Tevinca,
0.073-m
Refractor + CCD);
26.13,
10.9,
4'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
26.03,
11.1,
10.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.8'
tail in p.a. 287 deg);
26.03,
10.7,
8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.4'
tail in p.a. 283 deg);
26.03,
10.5,
12'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
6.1'
tail in p.a. 286 deg);
26.01,
11.3,
1.3'
(T. Sciezor,
Cracow,
0.03-m
Camera lens + CCD);
26.00,
9.9,
7.1'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.2-m
Schmidt-Cassegrain + CCD);
25.75,
10.5,
7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
25.23,
9.4,
18.4'
(M. Mašek,
CTA-N La Palma,
0.067-m
Camera lens + CCD);
25.23,
11.0,
7.8'
(M. Mašek,
CTA-N La Palma,
0.067-m
Camera lens + CCD;
6.2'
tail in p.a. 285 deg);
25.18,
10.7,
5.4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5.2'
tail in p.a. 294 deg);
24.75,
10.4,
7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
24.11,
10.6,
4.8'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
23.80,
11.0,
3.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
23.76,
10.6,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
23.03,
11.5,
2.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
22.76,
10.3,
7.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
7.7'
tail in p.a. 285 deg);
22.16,
9.3,
18.4'
(M. Mašek,
CTA-N La Palma,
0.067-m
Camera lens + CCD);
22.16,
10.9,
7.8'
(M. Mašek,
CTA-N La Palma,
0.067-m
Camera lens + CCD);
21.80,
10.9,
3.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
21.79,
10.2,
8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.75,
11.8,
2.6'
(O. Miyazaki,
0.32-m
Newtonian);
21.22,
10.0,
4.3'
(À. Bueno,
Tevinca (MPC 247),
0.073-m
Refractor + CCD);
21.05,
12.2,
1.5'
(F. Carrasco Lopez,
Observatorio Villuercas-Navezuelas (MPC R49),
0.25-m
Newtonian + CCD);
21.05,
12.5,
0.98'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian + CCD);
20.80,
11.1,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
20.76,
10.4,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.71,
10.7,
5.3'
(T. Yusa,
0.05-m
Refractor + CCD);
20.70,
10.7,
2.8'
(Y. Nagai,
0.05-m
Refractor + CCD);
20.23,
9.8,
5'
(À. Bueno,
Tevinca (MPC 247),
0.073-m
Refractor + CCD);
20.07,
10.7,
3.1'
(M. Meyer,
0.05-m
Refractor + CCD);
20.01,
11.6,
1.5'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD);
19.80,
11.0,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
19.77,
10.3,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.73,
10.6,
5'
(T. Yusa,
0.05-m
Refractor + CCD);
18.80,
11.0,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
18.77,
10.4,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
18.71,
10.7,
3.9'
(O. Miyazaki,
0.32-m
Newtonian);
17.86,
11.0,
2.6'
(T. Yusa,
0.05-m
Refractor + CCD);
17.82,
10.5,
3'
(P. Yi,
Yeongyang,
0.61-m
Newtonian);
17.80,
11.0,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
17.77,
10.2,
7.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
4.9'
tail in p.a. 282 deg);
17.27,
10.5,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
17.19,
10.8,
2.6'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
17.16,
10.5,
4.4'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
16.81,
10.1,
7.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5.7'
tail in p.a. 288 deg);
16.80,
11.0,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
16.77,
10.5,
3.2'
(T. Yusa,
0.05-m
Refractor + CCD);
16.27,
10.4,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
16.19,
11.6,
2.9'
(W. Souza,
0.05-m
Refractor + CCD);
15.82,
10.9,
2.9'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
15.77,
10.2,
7.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
7.3'
tail in p.a. 285 deg);
15.27,
10.4,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
15.18,
10.6,
2.5'
(T. Karhula,
Virsbo, Sweden,
0.12-m
Refractor);
15.14,
10.5,
2.5'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
15.11,
10.2,
5.5'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
15.02,
9.4,
6.6'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.05-m
Refractor + CCD);
14.83,
10.1,
7.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
7.7'
tail in p.a. 290 deg);
14.80,
10.5,
4.8'
(T. Yusa,
0.05-m
Refractor + CCD);
14.80,
10.6,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
13.82,
10.6,
3.5'
(O. Miyazaki,
0.32-m
Newtonian);
13.80,
10.5,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
13.78,
10.1,
7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
6.4'
tail in p.a. 288 deg);
12.82,
10.3,
3.6'
(O. Miyazaki,
0.32-m
Newtonian);
12.80,
10.4,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
12.78,
10.0,
7.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
8.6'
tail in p.a. 286 deg);
12.70,
10.5,
3.7'
(Y. Nagai,
0.05-m
Refractor + CCD);
12.66,
10.5,
4.5'
(T. Yusa,
0.05-m
Refractor + CCD);
11.81,
10.0,
5'
(R. Aikawa,
0.203-m
Schmidt-Cassegrain);
11.11,
9.0,
18.4'
(M. Mašek,
CTA-N La Palma,
0.067-m
Camera lens + CCD);
11.11,
10.4,
11.5'
(M. Mašek,
CTA-N La Palma,
0.067-m
Camera lens + CCD);
10.98,
10.0,
3.7'
(T. Sciezor,
Cracow,
0.03-m
Camera lens + CCD);
10.03,
11.7,
3.1'
(P. Dekelver,
0.3-m
Newtonian + CCD);
09.81,
10.2,
3.9'
(Y. Nagai,
0.05-m
Refractor + CCD);
09.04,
10.8,
3'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
09.02,
10.8,
3'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3.3'
tail in p.a. 288 deg);
08.82,
10.1,
4.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
08.18,
9.8,
8'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
07.81,
9.9,
5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
07.55,
10.5,
3.4'
(J. Solaz,
iTelescope Observatory, Beryl Junction (MPC U94),
0.28-m
Schmidt-Cassegrain + CCD);
07.09,
12.9,
0.6'
(T. Csorgei,
PalantirII (MPC 247),
0.303-m
Newtonian + CCD);
06.28,
9.4,
3'
(J. de Souza Aguiar,
0.3-m
Newtonian);
06.20,
12.9,
0.6'
(T. Csorgei,
PalantirII (MPC 247),
0.303-m
Newtonian + CCD);
05.79,
9.4,
8'
(T. Yusa,
0.05-m
Refractor + CCD);
05.03,
12.1,
1'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.20,
9.8,
6.4'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5.7'
tail in p.a. 287 deg);
03.70,
10.0,
4'
(Y. Nagai,
0.05-m
Refractor + CCD);
03.17,
9.5,
8'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
01.80,
9.5,
8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.02,
10.9,
2.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
jan
31.80,
9.8,
7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
7.5'
tail in p.a. 291 deg);
31.39,
9.2,
9'
(A. Pearce,
Skygems Chopin Observatory TX USA,
0.08-m
Refractor + CCD);
31.30,
9.5,
5'
(M. Goiato,
0.22-m
Newtonian);
31.17,
9.5,
6'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
29.84,
9.8,
5'
(O. Miyazaki,
0.32-m
Newtonian);
29.83,
10.1,
3.7'
(Y. Nagai,
0.05-m
Refractor + CCD);
29.80,
9.8,
9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
11.6'
tail in p.a. 287 deg);
29.55,
9.1,
12'
(J. Chambó Bris,
Utah Desert Observatory, USA,
0.51-m
Ritchey-Chretien + CCD;
2.5'
tail in p.a. 285 deg);
29.32,
9.8,
6.7'
(M. Mattiazzo,
0.25-m
Schmidt reflector + CCD);
28.81,
9.7,
7'
(A. Pearce,
Geordie Bay, Rottnest Island, W. Australia,
0.05-m
Refractor + CCD);
29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.98,
10.4,
9.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.98,
11.6,
8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.98,
11.4,
7.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.66,
11.7,
2.2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
26.12,
13.0,
0.8'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
26.02,
10.5,
8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.01,
11.4,
6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.01,
11.8,
7.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.00,
11.3,
2.1'
(À. Bueno,
Tevinca,
0.073-m
Refractor + CCD);
25.95,
11.6,
2.9'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.2-m
Schmidt-Cassegrain + CCD);
25.70,
11.9,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
25.15,
11.7,
2.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
24.96,
11.7,
2.1'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
24.65,
11.7,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
24.44,
12.2,
1'
(C. Wyatt,
0.4-m
Newtonian);
23.96,
11.8,
1.8'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
23.80,
11.7,
1.6'
(T. Yusa,
0.05-m
Refractor + CCD);
23.66,
11.7,
1.6'
(T. Yusa,
0.05-m
Refractor + CCD);
23.66,
11.8,
1.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
23.64,
11.3,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
23.57,
11.8,
1.6'
(T. Yusa,
0.05-m
Refractor + CCD);
23.32,
11.2,
2.5'
(M. Olason,
Arizona,
0.03-m
Refractor + CCD);
23.01,
11.8,
2.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
22.63,
11.5,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
22.59,
12.3,
2.4'
(T. Yusa,
0.05-m
Refractor + CCD);
22.52,
12.2,
2.1'
(T. Yusa,
0.05-m
Refractor + CCD);
22.01,
12.2,
1.8'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD);
21.96,
12.0,
1.8'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
21.74,
12.5,
1.3'
(O. Miyazaki,
0.32-m
Newtonian);
21.66,
12.2,
1.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
21.61,
11.6,
3.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.18,
11.8,
4.4'
(T. Yusa,
0.05-m
Refractor + CCD);
20.97,
12.0,
2.1'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
20.90,
11.5,
4.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.90,
10.7,
6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.90,
11.9,
5.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.77,
11.4,
3.2'
(T. Yusa,
0.05-m
Refractor + CCD);
20.72,
11.6,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.68,
11.5,
2.5'
(Y. Nagai,
0.05-m
Refractor + CCD);
20.66,
12.2,
1.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
20.55,
11.7,
3'
(T. Yusa,
0.05-m
Refractor + CCD);
20.03,
11.6,
1.8'
(M. Meyer,
0.05-m
Refractor + CCD);
19.98,
11.9,
2.2'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
19.95,
11.2,
2.5'
(T. Karhula,
Virsbo, Sweden,
0.12-m
Refractor);
19.71,
11.7,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.69,
11.9,
1.6'
(O. Miyazaki,
0.32-m
Newtonian);
19.66,
12.2,
1.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
19.57,
12.0,
1.7'
(T. Yusa,
0.05-m
Refractor + CCD);
19.20,
12.0,
1.8'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
18.89,
12.0,
1.6'
(H. Meyerdierks,
Osterholz-Scharmbeck,
0.2-m
Schmidt-Cassegrain + CCD);
18.70,
11.2,
1.5'
(O. Miyazaki,
0.32-m
Newtonian);
18.70,
11.6,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
18.66,
12.0,
1.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
18.51,
12.0,
2'
(T. Yusa,
0.05-m
Refractor + CCD);
18.22,
11.5,
4.8'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
18.22,
11.0,
4.8'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
17.99,
12.1,
2'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
17.84,
12.2,
1.7'
(T. Yusa,
0.05-m
Refractor + CCD);
17.68,
11.7,
3.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
17.66,
12.1,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
17.56,
11.8,
1.54'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
17.01,
11.7,
1.13'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
16.98,
12.1,
1.3'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
16.71,
11.8,
2.1'
(T. Yusa,
0.05-m
Refractor + CCD);
16.66,
12.1,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
16.62,
11.5,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
16.46,
11.7,
1.3'
(G. Pappa,
Texas,USA (remote control),
0.08-m
Refractor + CCD);
16.26,
12.4,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
16.22,
12.8,
1.8'
(W. Souza,
0.05-m
Refractor + CCD);
16.08,
11.7,
0.94'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
15.85,
11.8,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
15.81,
11.9,
1.8'
(T. Yusa,
0.05-m
Refractor + CCD);
15.66,
12.0,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
15.09,
12.0,
1.3'
(C. Harder,
Jeersdorf f,
0.35-m
Newtonian);
14.90,
12.3,
1.2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
14.85,
12.0,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
14.69,
12.1,
1.8'
(T. Yusa,
0.05-m
Refractor + CCD);
14.66,
12.1,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
13.84,
11.8,
1.1'
(O. Miyazaki,
0.32-m
Newtonian);
13.74,
11.7,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
13.66,
12.1,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
13.11,
13.0,
2'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
12.73,
11.3,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
12.68,
12.3,
2.5'
(Y. Nagai,
0.05-m
Refractor + CCD);
12.66,
12.1,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
12.60,
12.0,
2.1'
(T. Yusa,
0.05-m
Refractor + CCD);
12.59,
11.8,
4.2'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
12.58,
11.5,
4.5'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
12.21,
11.2,
4.8'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
12.21,
11.6,
4.8'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
12.00,
13.1,
2.1'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
11.74,
12.0,
2.4'
(T. Yusa,
0.05-m
Refractor + CCD);
11.72,
12.9,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
11.61,
12.0,
3.3'
(Y. Nagai,
0.05-m
Refractor + CCD);
11.02,
12.1,
2'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
10.97,
11.2,
3.5'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
09.99,
12.5,
1.2'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
09.92,
12.5,
0.24'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.92,
16.2,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.69,
13.6,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
08.00,
15.0,
0.7'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.69,
12.9,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
07.62,
12.8,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
02.69,
12.8,
3.3'
(T. Yusa,
0.05-m
Refractor + CCD);
01.59,
12.8,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD);
jan
31.63,
12.6,
2.9'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
30.06,
14.6,
0.7'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
28.79,
12.5,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
40P/Vaisala
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
22.81,
17.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 265 deg);
20.81,
16.7,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 276 deg);
19.81,
17.2,
0.32'
(T. Yusa,
0.05-m
Refractor + CCD);
19.81,
16.5,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.9'
tail in p.a. 269 deg);
18.82,
16.4,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 277 deg);
17.82,
16.4,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.2'
tail in p.a. 273 deg);
15.82,
16.7,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 277 deg);
13.82,
16.8,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 279 deg);
09.84,
16.1,
0.3'
(Y. Nagai,
0.05-m
Refractor + CCD);
08.19,
18.1,
0.24'
(P. Dekelver,
0.3-m
Newtonian + CCD);
06.43,
15.3,
0.5'
(G. Pappa,
Texas,USA (remote control),
0.08-m
Refractor + CCD);
05.84,
15.9,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD);
02.82,
15.9,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
jan
31.83,
16.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 284 deg);
30.53,
15.6,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
43P/Wolf-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.99,
17.3,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 296 deg);
26.02,
17.2,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.4'
tail in p.a. 301 deg);
22.61,
16.3,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.5'
tail in p.a. 299 deg);
21.65,
16.5,
0.5'
(T. Yusa,
0.05-m
Refractor + CCD;
0.7'
tail in p.a. 322 deg);
21.60,
16.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.8'
tail in p.a. 308 deg);
20.91,
16.9,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.1'
tail in p.a. 304 deg);
20.62,
16.8,
0.5'
(T. Yusa,
0.05-m
Refractor + CCD);
20.58,
16.4,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.7'
tail in p.a. 304 deg);
19.99,
17.3,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
19.63,
16.4,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 314 deg);
18.63,
16.5,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
17.70,
16.4,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.6'
tail in p.a. 305 deg);
16.61,
16.4,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.7'
tail in p.a. 301 deg);
15.66,
15.9,
0.9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.6'
tail in p.a. 296 deg);
13.65,
16.2,
0.9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
4.5'
tail in p.a. 297 deg);
12.65,
16.3,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.2'
tail in p.a. 300 deg);
11.70,
16.3,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5.4'
tail in p.a. 301 deg);
09.08,
17.6,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.02,
17.5,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.60,
16.8,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
jan
31.71,
16.6,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.69,
16.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.3'
tail in p.a. 301 deg);
48P/Johnson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
17.88,
19.5,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.86,
19.0,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
63P/Wild
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
23.11,
17.8,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
16.95,
18.1,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
15.51,
17.4,
0.2'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
10.05,
18.1,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.90,
17.7,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
05.08,
18.2,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.94,
18.1,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
74P/Smirnova-Chernykh
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
10.94,
20.5,
0.11'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
88P/Howell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
24.36,
12.2,
1.8'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
24.36,
10.5,
4.5'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
23.85,
10.8,
2.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
21.85,
10.8,
2.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
21.54,
11.3,
1.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
20.85,
10.8,
2.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
19.85,
10.9,
2.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
18.85,
11.0,
2.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
18.55,
11.7,
1'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
18.36,
10.6,
4.2'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
18.36,
12.2,
1.5'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
17.85,
11.4,
2.2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
16.85,
11.1,
2.2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
15.85,
11.6,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
13.85,
11.3,
2.2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
12.85,
11.2,
2.2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
08.56,
12.7,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
08.55,
12.7,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
jan
30.55,
14.4,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
123P/West-Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
17.91,
18.5,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
09.98,
18.0,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.88,
18.2,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
124P/Mrkos
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
21.94,
19.1,
0.28'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD);
19.92,
18.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
10.14,
19.0,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
09.03,
18.7,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
07.06,
18.7,
0.11'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
05.17,
19.2,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
143P/Kowal-Mrkos
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
23.85,
19.0,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
16.97,
19.6,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.00,
19.4,
0.11'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
145P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
14.83,
16.7,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.80,
16.7,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
164P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.04,
17.7,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.92,
17.6,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.09,
17.3,
0.34'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
11.12,
17.1,
0.4'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
09.96,
17.4,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
09.14,
16.8,
0.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
171P/Spahr
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
08.98,
20.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
175P/Hergenrother
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
21.99,
20.6,
0.11'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.93,
20.5,
0.11'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
187P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
11.10,
21.2,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
195P/Hill
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
19.99,
18.1,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
10.05,
18.1,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
210P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.06,
16.8,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.6'
tail in p.a. 291 deg);
22.77,
16.8,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.12,
12.8,
1.5'
(F. Carrasco Lopez,
Observatorio Villuercas-Navezuelas (MPC R49),
0.25-m
Newtonian + CCD);
20.78,
16.6,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.15,
17.4,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
19.77,
17.2,
0.4'
(T. Yusa,
0.05-m
Refractor + CCD);
19.76,
16.4,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.8'
tail in p.a. 287 deg);
17.80,
16.2,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.2'
tail in p.a. 289 deg);
16.82,
16.2,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.2'
tail in p.a. 293 deg);
15.79,
16.1,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 288 deg);
13.79,
16.1,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 294 deg);
12.77,
16.0,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2'
tail in p.a. 291 deg);
jan
31.81,
16.0,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 292 deg);
29.82,
15.3,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.3'
tail in p.a. 291 deg);
217P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.00,
17.3,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.89,
15.8,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.3'
tail in p.a. 139 deg);
20.89,
16.9,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 131 deg);
20.88,
17.2,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 140 deg);
17.98,
16.2,
0.34'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
11.13,
18.8,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
218P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.49,
15.4,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
233P/La Sagra
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
17.92,
20.1,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
235P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.82,
14.1,
0.9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5'
tail in p.a. 267 deg);
24.77,
14.0,
0.9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
6.2'
tail in p.a. 270 deg);
23.75,
14.4,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.8'
tail in p.a. 271 deg);
23.75,
14.9,
0.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
1.1'
tail in p.a. 277 deg);
22.76,
13.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
7.9'
tail in p.a. 272 deg);
21.84,
13.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
6.9'
tail in p.a. 274 deg);
21.75,
14.5,
0.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
1.2'
tail in p.a. 277 deg);
21.21,
14.3,
0.7'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
20.80,
13.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
7.2'
tail in p.a. 271 deg);
20.75,
14.4,
0.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
0.9'
tail in p.a. 272 deg);
19.79,
14.0,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5.5'
tail in p.a. 273 deg);
19.75,
14.1,
0.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
1.3'
tail in p.a. 273 deg);
18.80,
14.0,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 273 deg);
18.75,
14.6,
0.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
1.8'
tail in p.a. 279 deg);
17.78,
14.0,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5.4'
tail in p.a. 272 deg);
17.75,
14.1,
0.9'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
1.7'
tail in p.a. 273 deg);
16.77,
14.0,
1.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
7.1'
tail in p.a. 272 deg);
16.75,
14.6,
0.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
1.7'
tail in p.a. 277 deg);
15.80,
13.7,
1.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
4.7'
tail in p.a. 270 deg);
15.75,
14.2,
1'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
1.6'
tail in p.a. 275 deg);
14.75,
14.6,
0.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
0.5'
tail in p.a. 292 deg);
13.77,
14.1,
1.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
6.9'
tail in p.a. 273 deg);
12.75,
14.1,
1'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
2'
tail in p.a. 276 deg);
09.83,
13.9,
0.8'
(Y. Nagai,
0.05-m
Refractor + CCD);
08.17,
14.4,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD;
2.2'
tail in p.a. 275 deg);
07.76,
14.0,
0.9'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
2.1'
tail in p.a. 278 deg);
05.82,
14.6,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD;
1.9'
tail in p.a. 294 deg);
01.79,
14.3,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.5'
tail in p.a. 279 deg);
jan
31.79,
14.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
4.8'
tail in p.a. 274 deg);
29.84,
14.0,
0.6'
(Y. Nagai,
0.05-m
Refractor + CCD);
29.33,
14.1,
0.9'
(M. Mattiazzo,
0.25-m
Schmidt reflector + CCD;
13.7'
tail in p.a. 278 deg);
28.77,
14.0,
1.2'
(A. Pearce,
Geordie Bay, Rottnest Island, W. Australia,
0.05-m
Refractor + CCD;
1.5'
tail in p.a. 283 deg);
240P-B/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
20.84,
17.6,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.84,
18.8,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.84,
19.0,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.74,
18.0,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
14.79,
18.4,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
10.79,
17.9,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
09.97,
16.7,
0.5'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
08.76,
17.8,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
07.89,
17.0,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.91,
17.8,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
03.49,
16.4,
0.4'
(T. Yusa,
Osaki (MPC D92),
0.05-m
Refractor + CCD);
02.77,
18.1,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
jan
31.84,
17.5,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
240P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.75,
16.6,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 84 deg);
26.75,
15.3,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 89 deg);
26.74,
16.5,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 86 deg);
22.50,
15.2,
0.4'
(T. Yusa,
0.05-m
Refractor + CCD);
21.49,
15.4,
0.4'
(T. Yusa,
0.05-m
Refractor + CCD);
20.84,
16.2,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 96 deg);
20.84,
15.7,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 91 deg);
20.84,
14.2,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 86 deg);
20.47,
15.6,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
19.49,
15.6,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
18.74,
15.6,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 99 deg);
18.48,
15.6,
0.4'
(T. Yusa,
0.05-m
Refractor + CCD);
16.84,
16.1,
0.38'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
16.63,
15.2,
--
(A. Baskikh,
Новосибирск,
0.05-m
Refractor + CCD;
1'
tail in p.a. 108 deg);
16.50,
15.7,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
14.80,
14.9,
--
(G. van Buitenen,
Dordrecht, Sterrenburg (G06),
0.203-m
Ritchey-Chretien + CCD);
14.79,
15.5,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD);
13.80,
14.6,
1'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
1.1'
tail in p.a. 100 deg);
12.48,
15.0,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
12.44,
13.8,
0.5'
(T. Yusa,
0.05-m
Refractor + CCD);
11.52,
14.2,
1.3'
(T. Yusa,
0.05-m
Refractor + CCD);
10.79,
15.1,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1.1'
tail in p.a. 100 deg);
09.97,
15.2,
0.6'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
09.50,
13.8,
0.7'
(Y. Nagai,
0.05-m
Refractor + CCD);
08.81,
13.9,
1.1'
(W. Kutschera,
0.508-m
Newtonian + CCD);
08.76,
15.0,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
07.89,
14.9,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
07.48,
14.7,
0.9'
(T. Yusa,
0.05-m
Refractor + CCD);
04.91,
14.2,
1.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
03.72,
15.2,
1'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
03.49,
15.0,
0.8'
(T. Yusa,
Osaki (MPC D92),
0.05-m
Refractor + CCD;
0.5'
tail in p.a. 112 deg);
02.77,
14.4,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.7'
tail in p.a. 91 deg);
01.47,
14.5,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD);
jan
31.84,
15.0,
0.47'
(P. Dekelver,
0.3-m
Newtonian + CCD);
30.47,
14.6,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD;
0.4'
tail in p.a. 77 deg);
242P/Spahr
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
21.92,
17.1,
0.28'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD);
09.89,
18.5,
0.12'
(P. Dekelver,
0.3-m
Newtonian + CCD);
07.95,
17.6,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
248P/Gibbs
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
16.94,
19.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
06.90,
18.5,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
276P/Vorobjov
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
19.86,
19.3,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
450P/LONEOS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
23.86,
18.5,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
21.93,
18.7,
0.28'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD);
08.99,
18.4,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
06.99,
18.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
493P/LONEOS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
17.87,
17.6,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
04.93,
17.7,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
01.00,
17.3,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
495P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
06.97,
21.0,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
509P/Catalina
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
17.84,
19.5,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.04,
19.4,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.59,
14.6,
0.9'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
23.59,
14.7,
0.9'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
23.57,
14.7,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
22.59,
14.6,
1'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
21.55,
14.7,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.62,
14.6,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.57,
14.7,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
12.54,
14.7,
0.9'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
06.62,
14.7,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.64,
15.0,
0.9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
jan
31.68,
15.0,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.60,
14.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
19.85,
18.6,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
04.92,
18.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
21.20,
15.9,
0.4'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
19.78,
16.0,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
25.74,
16.7,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
21.79,
17.5,
0.28'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD);
C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.76,
14.9,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.76,
14.1,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.75,
15.4,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
22.46,
15.0,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
21.46,
15.2,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD);
20.85,
15.1,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.85,
13.9,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.85,
15.2,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 248 deg);
20.44,
14.8,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD);
19.46,
14.8,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD);
16.82,
15.7,
0.38'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
13.80,
15.9,
0.3'
(R. Arnold,
Skye, Scotland,
0.2-m
Schmidt-Cassegrain + CCD);
13.79,
14.4,
0.8'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
13.49,
14.9,
0.6'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
12.49,
14.9,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
12.42,
14.9,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
09.99,
15.1,
0.6'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
09.94,
14.9,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.86,
15.4,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
07.90,
14.9,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD);
07.40,
15.1,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD);
05.85,
14.2,
0.9'
(W. Kutschera,
0.508-m
Newtonian + CCD);
04.99,
15.2,
0.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
01.50,
14.7,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD);
jan
31.96,
15.1,
0.41'
(P. Dekelver,
0.3-m
Newtonian + CCD);
30.43,
15.6,
0.9'
(T. Yusa,
0.05-m
Refractor + CCD);
28.80,
16.2,
0.75'
(R. Arnold,
Skye, Scotland,
0.2-m
Schmidt-Cassegrain + CCD);
C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
25.99,
14.8,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4.1'
tail in p.a. 250 deg);
25.98,
15.9,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.8'
tail in p.a. 248 deg);
25.98,
15.4,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 248 deg);
25.91,
15.1,
0.47'
(M. Meyer,
0.05-m
Refractor + CCD);
23.82,
14.3,
0.3'
(T. Sciezor,
Cracow,
0.05-m
Camera lens + CCD);
21.52,
15.1,
0.7'
(T. Yusa,
0.05-m
Refractor + CCD);
21.02,
15.1,
0.7'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
20.88,
14.4,
0.9'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.3'
tail in p.a. 249 deg);
20.88,
15.2,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.7'
tail in p.a. 246 deg);
20.87,
15.4,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.8'
tail in p.a. 248 deg);
20.50,
15.2,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD;
4.4'
tail in p.a. 254 deg);
19.87,
14.8,
1.3'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
19.59,
15.0,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD;
0.8'
tail in p.a. 268 deg);
18.79,
15.9,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.7'
tail in p.a. 250 deg);
18.50,
15.6,
0.5'
(T. Yusa,
0.05-m
Refractor + CCD;
0.7'
tail in p.a. 242 deg);
17.49,
15.0,
0.62'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
16.53,
15.2,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD;
3.2'
tail in p.a. 253 deg);
16.01,
15.5,
0.38'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
14.87,
14.9,
--
(G. van Buitenen,
Dordrecht, Sterrenburg (G06),
0.203-m
Ritchey-Chretien + CCD);
14.65,
15.4,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD;
1.2'
tail in p.a. 267 deg);
13.84,
15.7,
0.5'
(R. Arnold,
Skye, Scotland,
0.2-m
Schmidt-Cassegrain + CCD);
13.78,
14.6,
0.8'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
2.9'
tail in p.a. 256 deg);
13.63,
14.8,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
6.2'
tail in p.a. 252 deg);
12.62,
14.7,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5.3'
tail in p.a. 252 deg);
12.59,
14.8,
0.8'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
4.9'
tail in p.a. 249 deg);
11.64,
14.7,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
3.9'
tail in p.a. 255 deg);
09.56,
14.6,
0.8'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
8'
tail in p.a. 250 deg);
09.53,
14.5,
0.5'
(Y. Nagai,
0.05-m
Refractor + CCD);
09.52,
14.9,
0.65'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
09.05,
14.5,
0.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
7.4'
tail in p.a. 250 deg);
08.97,
14.4,
0.8'
(W. Kutschera,
0.508-m
Newtonian + CCD);
08.07,
15.0,
0.5'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.51,
15.0,
0.5'
(T. Yusa,
0.05-m
Refractor + CCD);
05.56,
15.1,
0.9'
(T. Yusa,
0.05-m
Refractor + CCD;
1.6'
tail in p.a. 260 deg);
05.19,
15.9,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD;
4.3'
tail in p.a. 249 deg);
jan
29.66,
14.4,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.4'
tail in p.a. 252 deg);
C/2022 R6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.99,
17.1,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
23.88,
16.8,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
23.52,
16.5,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.95,
17.3,
0.17'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD);
20.91,
16.7,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.53,
16.5,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.3'
tail in p.a. 236 deg);
19.59,
16.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.2'
tail in p.a. 238 deg);
17.72,
16.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.8'
tail in p.a. 237 deg);
16.99,
16.3,
0.4'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
16.57,
16.3,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 239 deg);
15.58,
16.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.3'
tail in p.a. 239 deg);
14.89,
16.3,
--
(G. van Buitenen,
Dordrecht, Sterrenburg (G06),
0.203-m
Ritchey-Chretien + CCD);
14.54,
16.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.7'
tail in p.a. 237 deg);
13.59,
16.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
12.59,
16.2,
0.5'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
12.59,
16.1,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
11.63,
16.0,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
07.97,
16.7,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
07.94,
16.3,
0.5'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
jan
30.55,
16.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.63,
16.2,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
21.81,
17.1,
0.28'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD);
04.96,
17.0,
0.29'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2023 F3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
21.93,
17.8,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
20.55,
17.3,
0.55'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 129 deg);
19.64,
17.0,
0.55'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
18.61,
16.9,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
17.66,
17.1,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 128 deg);
17.01,
17.6,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
16.59,
16.9,
0.55'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.9'
tail in p.a. 118 deg);
15.60,
17.1,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
13.61,
16.9,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
12.62,
17.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.2'
tail in p.a. 130 deg);
11.69,
16.9,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 130 deg);
07.99,
17.6,
0.24'
(P. Dekelver,
0.3-m
Newtonian + CCD);
07.98,
17.6,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
01.67,
16.9,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
jan
31.59,
17.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.72,
17.3,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
27.02,
17.4,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.77,
18.0,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
22.27,
18.5,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
10.29,
16.9,
0.6'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2023 R1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.52,
14.4,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
21.52,
14.8,
0.24'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
C/2023 RS61
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
19.88,
18.8,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2023 T3 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
25.24,
18.8,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2023 X2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
27.03,
18.5,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
27.01,
18.1,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.05,
17.8,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
21.82,
17.5,
0.35'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD);
20.95,
17.5,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
20.77,
18.1,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
16.96,
17.7,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
14.99,
17.9,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
10.97,
16.9,
0.45'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
10.07,
16.8,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD;
1.8'
tail in p.a. 161 deg);
08.97,
17.3,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
06.94,
17.2,
0.34'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
05.12,
17.6,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.50,
9.6,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
12.6'
tail in p.a. 138 deg);
25.79,
9.3,
3'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
10'
tail);
25.77,
9.0,
--
(M. Deconinck,
Fernelmont,
25x130
Binoculars);
25.47,
8.9,
5'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
24.50,
8.3,
5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
28.5'
tail in p.a. 97 deg);
24.42,
8.1,
4'
(C. Wyatt,
0.4-m
Newtonian;
45'
tail in p.a. 106 deg);
24.09,
8.5,
3.7'
(M. Olason,
Arizona,
0.03-m
Refractor + CCD;
16'
tail in p.a. 103 deg);
23.50,
8.8,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
13.3'
tail in p.a. 128 deg);
23.42,
8.7,
4.6'
(K. Yoshimoto,
0.077-m
Refractor + CCD;
8'
tail in p.a. 140 deg);
22.95,
8.5,
2'
(A. Amorim,
0.09-m
Refractor);
22.94,
7.9,
1'
(J. de Souza Aguiar,
25x100
Binoculars);
22.50,
8.8,
4'
(A. Pearce,
Nedlands, Perth, W. Australia (MPC P14),
0.05-m
Refractor + CCD;
24.3'
tail in p.a. 95 deg);
22.44,
8.3,
5'
(C. Drescher,
Warrill View, Queensland,
12x50
Binoculars);
22.40,
8.8,
2.5'
(Y. Nagai,
0.05-m
Refractor + CCD;
1'
tail in p.a. 120 deg);
22.39,
8.9,
2.8'
(T. Yusa,
0.05-m
Refractor + CCD;
2.4'
tail in p.a. 112 deg);
21.95,
8.5,
1'
(A. Amorim,
0.09-m
Refractor);
21.93,
10.6,
4'
(W. Souza,
0.05-m
Refractor + CCD);
21.51,
9.3,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
6'
tail in p.a. 116 deg);
21.45,
8.1,
5'
(C. Drescher,
Warrill View, Queensland,
12x50
Binoculars);
21.40,
9.6,
3.1'
(T. Yusa,
0.05-m
Refractor + CCD;
2.7'
tail in p.a. 113 deg);
20.83,
9.1,
--
(L. Bracero,
Ponce,
0.3-m
Camera lens);
20.80,
7.9,
5'
(C. Labordena,
Culla,
0.102-m
Refractor);
20.50,
9.4,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
11.7'
tail in p.a. 122 deg);
20.44,
8.0,
5'
(C. Drescher,
Wyaralong Dam, Queensland,
12x50
Binoculars);
20.40,
9.2,
2.8'
(T. Yusa,
0.05-m
Refractor + CCD;
3.3'
tail in p.a. 105 deg);
20.03,
9.0,
7'
(J. Chambó Bris,
Rio Hurtado, Chile,
0.25-m
Newtonian + CCD;
1.2° tail in p.a. 106 deg);
20.01,
8.1,
5'
(M. Goiato,
20x100
Binoculars);
19.94,
7.7,
1'
(J. de Souza Aguiar,
11x80
Binoculars);
19.81,
7.5,
6'
(J. Gonzalez Suarez,
20x80
Binoculars);
18.94,
7.6,
2'
(J. de Souza Aguiar,
11x80
Binoculars);
18.50,
8.6,
4.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
16.7'
tail in p.a. 117 deg);
17.50,
8.2,
5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
15.9'
tail in p.a. 118 deg);
17.47,
7.9,
3'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
17.43,
8.4,
6.3'
(K. Yoshimoto,
0.077-m
Refractor + CCD;
14'
tail in p.a. 130 deg);
16.94,
7.4,
2'
(J. de Souza Aguiar,
11x80
Binoculars);
16.71,
7.1,
--
(L. Bracero,
Ponce Puerto Rico,
0.3-m
Camera lens + CCD);
16.48,
7.2,
3'
(M. Mattiazzo,
Strathalbyn, South Australia,
15x70
Binoculars);
16.08,
7.5,
4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
17'
tail in p.a. 106 deg);
15.98,
7.0,
4'
(M. Goiato,
7x50
Binoculars);
15.98,
7.1,
3'
(M. Goiato,
20x100
Binoculars;
1° tail in p.a. 110 deg);
15.96,
7.0,
2'
(W. Souza,
10x42.0
Binoculars);
15.95,
7.1,
3'
(W. Souza,
20x80
Binoculars);
15.93,
7.3,
2'
(J. de Souza Aguiar,
11x80
Binoculars);
15.50,
7.6,
5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
32.4'
tail in p.a. 105 deg);
15.48,
7.8,
3'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
15.08,
7.4,
4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
14.98,
7.3,
3'
(M. Goiato,
20x100
Binoculars;
1° tail in p.a. 110 deg);
14.97,
7.2,
3'
(W. Souza,
10x42.0
Binoculars);
14.96,
7.2,
3'
(W. Souza,
20x80
Binoculars);
14.94,
7.0,
3.1'
(W. Souza,
0.05-m
Refractor + CCD);
14.93,
7.2,
2'
(J. de Souza Aguiar,
11x80
Binoculars);
14.80,
7.3,
12.1'
(T. Csorgei,
Skygems Namibia Remote Observatory (MPC L81),
0.106-m
Refractor + CCD;
78.5'
tail in p.a. 108 deg);
14.80,
7.7,
5'
(G. Pappa,
Namibia,
0.106-m
Refractor + CCD;
20'
tail);
14.51,
7.7,
5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
35.8'
tail in p.a. 111 deg);
14.06,
7.7,
10.3'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD;
5.3° tail in p.a. 109 deg);
14.06,
7.0,
14.5'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD;
5.7° tail in p.a. 109 deg);
13.93,
7.2,
4'
(J. de Souza Aguiar,
11x80
Binoculars);
13.50,
7.6,
5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
32.5'
tail in p.a. 108 deg);
13.06,
7.2,
9.5'
(J. Chambó Bris,
Rio Hurtado, Chile,
0.039-m
Camera lens + CCD;
5° tail in p.a. 108 deg);
12.95,
7.5,
2'
(A. Amorim,
0.09-m
Refractor);
12.50,
7.4,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
35.5'
tail in p.a. 113 deg);
12.47,
7.3,
7.5'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD;
91.9'
tail in p.a. 111 deg);
11.51,
7.6,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
32.4'
tail in p.a. 114 deg);
11.42,
7.2,
5'
(C. Wyatt,
15x70
Binoculars;
32'
tail in p.a. 118 deg);
10.99,
7.3,
3'
(M. Goiato,
20x100
Binoculars;
1° tail in p.a. 110 deg);
10.44,
8.3,
3.6'
(T. Lekatsas,
Heaven's Mirror Observatory, Yass (MPC Q56),
0.106-m
Refractor + CCD;
1.65° tail in p.a. 116 deg);
10.42,
7.6,
6'
(C. Wyatt,
15x70
Binoculars;
32'
tail in p.a. 125 deg);
10.05,
9.2,
4.2'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD;
0.9° tail in p.a. 118 deg);
10.05,
8.2,
7.2'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD;
0.9° tail in p.a. 118 deg);
09.97,
7.0,
3'
(A. Ferrao,
0.114-m
Newtonian;
1'
tail in p.a. 115 deg);
09.77,
8.1,
5'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
18'
tail);
09.47,
7.3,
3'
(M. Mattiazzo,
Strathalbyn, South Australia,
15x70
Binoculars;
1° tail in p.a. 124 deg);
08.97,
7.4,
2'
(A. Amorim,
0.09-m
Refractor);
08.51,
8.0,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
38.6'
tail in p.a. 126 deg);
07.98,
6.8,
3'
(A. Ferrao,
0.114-m
Newtonian;
0.02° tail in p.a. 125 deg);
07.51,
7.7,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
36.8'
tail in p.a. 127 deg);
07.41,
7.4,
3'
(D. Edwards,
Peak Crossing, Queensland, Australia,
15x50
Binoculars;
30'
tail in p.a. 125 deg);
06.98,
6.9,
6'
(M. Goiato,
7x50
Binoculars);
06.98,
7.0,
5'
(M. Goiato,
20x100
Binoculars;
2° tail in p.a. 125 deg);
06.96,
6.9,
3'
(A. Amorim,
20x50
Binoculars);
06.51,
7.6,
4.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
38.5'
tail in p.a. 128 deg);
06.47,
6.9,
3'
(M. Mattiazzo,
Strathalbyn, South Australia,
15x70
Binoculars;
1° tail in p.a. 129 deg);
06.43,
9.3,
3.6'
(T. Lekatsas,
Heaven's Mirror Observatory, Yass (MPC Q56),
0.106-m
Refractor + CCD;
98.5'
tail in p.a. 130 deg);
06.42,
7.5,
4.2'
(T. Lekatsas,
Ma Ma Creek Observatory (MPC XXX),
0.12-m
Refractor + CCD;
68.5'
tail in p.a. 131 deg);
05.97,
6.9,
3'
(A. Ferrao,
0.114-m
Newtonian;
0.05° tail in p.a. 120 deg);
05.96,
7.0,
--
(A. Amorim,
20x50
Binoculars);
05.93,
6.7,
2.5'
(J. de Souza Aguiar,
11x80
Binoculars;
0.5° tail in p.a. 120 deg);
05.51,
7.7,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
36'
tail in p.a. 127 deg);
05.48,
7.2,
3'
(M. Mattiazzo,
Strathalbyn, South Australia,
15x70
Binoculars;
1° tail in p.a. 127 deg);
05.43,
7.3,
5.9'
(C. Wyatt,
15x70
Binoculars;
1.5° tail in p.a. 125 deg);
05.04,
7.3,
7.8'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD;
2.7° tail in p.a. 130 deg);
04.51,
7.0,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD;
40.2'
tail in p.a. 133 deg);
04.41,
6.6,
3'
(C. Wyatt,
15x70
Binoculars;
37'
tail in p.a. 138 deg);
04.04,
7.1,
7.4'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD;
1.9° tail in p.a. 133 deg);
04.04,
7.6,
5.5'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD;
0.5° tail in p.a. 136 deg);
03.97,
6.5,
3'
(A. Ferrao,
0.114-m
Newtonian);
03.47,
7.1,
3'
(M. Mattiazzo,
Strathalbyn, South Australia,
15x70
Binoculars);
02.47,
6.7,
3'
(M. Mattiazzo,
Strathalbyn, South Australia,
15x70
Binoculars);
jan
30.97,
6.8,
3'
(M. Goiato,
7x50
Binoculars);
29.43,
6.6,
2.3'
(C. Wyatt,
15x70
Binoculars);
29.06,
6.7,
7.2'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD;
2.4° tail in p.a. 144 deg);
29.06,
6.0,
11.4'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD;
3.2° tail in p.a. 143 deg);
C/2024 G2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
27.00,
18.7,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
23.97,
18.5,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
20.08,
18.4,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
10.06,
18.3,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2024 G6 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
25.17,
17.9,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2024 J3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.50,
15.1,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
21.51,
14.9,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
C/2024 L5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
19.96,
18.2,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.97,
18.0,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2024 T5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
23.84,
15.2,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
20.52,
14.9,
0.6'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
18.52,
14.9,
0.6'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
17.52,
15.0,
0.6'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
15.52,
14.8,
0.6'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
12.52,
15.0,
0.6'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
12.50,
14.8,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
11.53,
15.0,
0.7'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
07.83,
15.1,
0.34'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
06.54,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.56,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.3'
tail in p.a. 233 deg);
jan
31.62,
14.9,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 206 deg);
30.58,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 213 deg);
29.56,
15.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 224 deg);
C/2024 X2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
21.92,
19.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
17.96,
19.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
11.14,
19.2,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.02,
19.1,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2025 A6 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.72,
11.3,
2.2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
23.72,
11.7,
1.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
22.71,
11.1,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.84,
10.4,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
21.72,
11.6,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
21.71,
10.9,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.84,
10.8,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
20.72,
11.4,
2.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
20.72,
10.9,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.72,
10.9,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.72,
10.9,
2.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
18.85,
10.2,
3.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
18.73,
10.8,
3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
18.72,
11.0,
1.8'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
18.32,
10.1,
4.8'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
18.32,
10.1,
4.2'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD);
17.85,
10.1,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
17.75,
10.6,
3.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
17.27,
10.0,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
16.85,
9.9,
3.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
16.74,
10.3,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
16.27,
9.8,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
16.21,
11.9,
2.1'
(W. Souza,
0.05-m
Refractor + CCD);
15.84,
10.1,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
15.74,
10.5,
4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
15.72,
10.9,
2.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
15.27,
9.8,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
14.72,
10.8,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
13.72,
10.8,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
12.85,
10.0,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
12.72,
10.4,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
12.63,
10.0,
3.9'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
11.85,
10.0,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
08.84,
10.2,
3.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
07.85,
10.0,
3.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
07.84,
10.5,
3.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
06.85,
9.7,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
06.27,
9.3,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
05.85,
9.8,
4'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
03.85,
10.0,
4.5'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.07-m
Camera lens + CCD);
01.85,
9.9,
4.5'
(A. Pearce,
Nedlands, Perth,
0.07-m
Camera lens + CCD);
01.32,
9.5,
2.5'
(M. Goiato,
0.22-m
Newtonian);
jan
31.85,
9.3,
4'
(A. Pearce,
Nedlands, Perth,
0.07-m
Camera lens + CCD);
30.85,
9.5,
4'
(A. Pearce,
Nedlands, Perth,
0.07-m
Camera lens + CCD);
29.32,
9.2,
6.7'
(M. Mattiazzo,
0.25-m
Schmidt reflector + CCD;
32.1'
tail in p.a. 59 deg);
28.84,
9.6,
4'
(A. Pearce,
Geordie Bay, Rottnest Island, W. Australia,
0.05-m
Refractor + CCD);
C/2025 J1 (Borisov)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
27.02,
17.8,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 44 deg);
26.05,
17.9,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.4'
tail in p.a. 42 deg);
23.09,
17.3,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.3'
tail in p.a. 26 deg);
20.76,
18.0,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.3'
tail in p.a. 53 deg);
20.76,
16.6,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 40 deg);
20.75,
18.2,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.6'
tail in p.a. 37 deg);
19.87,
17.2,
0.28'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
15.46,
17.0,
0.2'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
14.94,
17.3,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.6'
tail in p.a. 9 deg);
10.01,
16.9,
0.35'
(P. Dekelver,
0.3-m
Newtonian + CCD);
09.10,
16.6,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
08.15,
17.2,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
05.05,
16.6,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
04.91,
16.9,
0.34'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
02.89,
17.0,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD;
11.3" tail in p.a. 38 deg);
01.05,
17.1,
0.23'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2025 L1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
22.74,
17.2,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.74,
17.1,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.74,
17.4,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
17.76,
17.0,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
16.81,
16.8,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
16.75,
16.8,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
15.75,
16.9,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
14.85,
16.2,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
13.76,
16.9,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
12.76,
16.4,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2025 N1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
24.84,
18.0,
0.24'
(N. Barnes,
PAT,
0.3-m
Newtonian + CCD);
22.79,
17.2,
0.24'
(N. Barnes,
PAT,
0.3-m
Newtonian + CCD);
21.91,
15.8,
0.8'
(J. Solaz,
Escaldarium Observatory,Caldes de Montbui (MPC D28),
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 98 deg);
17.04,
17.3,
0.31'
(N. Barnes,
PAT,
0.3-m
Newtonian + CCD);
16.89,
16.3,
0.34'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
06.89,
14.8,
0.7'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
06.85,
16.2,
0.38'
(N. Barnes,
PAT,
0.3-m
Newtonian + CCD);
C/2025 Q3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
25.79,
15.5,
0.5'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD);
12.49,
15.4,
0.6'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
06.55,
16.0,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
jan
29.54,
15.9,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2025 R2 (SWAN)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
09.89,
18.5,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2025 R3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
09.09,
13.3,
1.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
08.77,
12.4,
2'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD;
2'
tail in p.a. 29 deg);
08.39,
13.7,
1.7'
(T. Yusa,
0.05-m
Refractor + CCD);
C/2025 V2 (Rankin)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
19.95,
18.2,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
07.95,
18.1,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
C/2026 A1 (MAPS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
27.03,
12.4,
5'
(T. Lovejoy,
iTelescope Deep Sky Chile, Rio Hurtado (MPC X07),
0.25-m
Newtonian + CCD;
4.4'
tail in p.a. 88 deg);
26.52,
12.7,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
26.51,
12.6,
3.3'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
2.2'
tail in p.a. 91 deg);
26.02,
13.2,
3.8'
(T. Lovejoy,
iTelescope Deep Sky Chile, Rio Hurtado (MPC X07),
0.25-m
Newtonian + CCD);
25.79,
12.9,
4.4'
(J. Koukal,
Valasske Mezirici,
0.25-m
Newtonian + CCD);
25.49,
13.1,
2'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
25.06,
14.2,
2.7'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD);
25.06,
12.6,
5.2'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD);
24.50,
12.9,
3.2'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
2.2'
tail in p.a. 91 deg);
24.06,
14.0,
2.8'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
24.06,
12.7,
6.4'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
24.03,
12.7,
4.5'
(T. Lovejoy,
iTelescope Deep Sky Chile, Rio Hurtado (MPC X07),
0.25-m
Newtonian + CCD;
2.3'
tail in p.a. 86 deg);
23.54,
12.9,
2.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.3'
tail in p.a. 87 deg);
23.52,
13.7,
2'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
23.50,
13.0,
3'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
1.8'
tail in p.a. 92 deg);
23.44,
13.5,
2.8'
(K. Yoshimoto,
0.077-m
Refractor + CCD);
23.07,
12.8,
2.2'
(V. Italo,
Warm Springs (MPC 247),
0.2-m
Schmidt-Cassegrain + CCD;
2.17'
tail in p.a. 87 deg);
23.06,
13.4,
4.5'
(T. Lovejoy,
iTelescope Deep Sky Chile, Rio Hurtado (MPC X07),
0.25-m
Newtonian + CCD);
23.04,
12.4,
5.7'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
23.04,
14.9,
2'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
22.52,
13.8,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
22.42,
13.5,
1'
(T. Yusa,
0.05-m
Refractor + CCD);
22.04,
12.5,
5.7'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
22.04,
15.1,
1.7'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
21.52,
13.3,
3'
(A. Pearce,
Nedlands, Perth, W. Australia,
0.05-m
Refractor + CCD);
21.50,
13.3,
3'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
1.8'
tail in p.a. 87 deg);
21.43,
13.2,
1.4'
(T. Yusa,
0.05-m
Refractor + CCD);
21.09,
13.0,
5.5'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
21.09,
14.6,
2.3'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
21.07,
13.3,
2.8'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
21.07,
14.9,
1.7'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
21.03,
13.3,
5'
(T. Lovejoy,
iTelescope Deep Sky Chile, Rio Hurtado (MPC X07),
0.25-m
Newtonian + CCD;
5.2'
tail in p.a. 88 deg);
20.51,
13.8,
2.7'
(T. Lekatsas,
Heaven's Mirror Observatory, Yass (MPC Q56),
0.106-m
Refractor + CCD);
20.50,
13.6,
2.7'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
2.1'
tail in p.a. 89 deg);
20.09,
15.7,
1.4'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
20.09,
12.9,
4'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
20.05,
13.6,
4.9'
(T. Lovejoy,
iTelescope Deep Sky Chile, Rio Hurtado (MPC X07),
0.25-m
Newtonian + CCD;
1.8'
tail in p.a. 81 deg);
19.50,
13.9,
2.5'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
1.2'
tail in p.a. 85 deg);
19.43,
13.9,
0.8'
(T. Yusa,
0.05-m
Refractor + CCD);
19.09,
15.0,
1.8'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
19.09,
13.3,
4.1'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
19.07,
13.5,
4.9'
(T. Lovejoy,
iTelescope Deep Sky Chile, Rio Hurtado (MPC X07),
0.25-m
Newtonian + CCD);
19.05,
13.2,
2.6'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
19.05,
15.8,
1'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
18.50,
13.9,
2.5'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
1.7'
tail in p.a. 82 deg);
18.46,
13.7,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
18.09,
15.5,
1.9'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD);
18.09,
13.4,
4.3'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD);
18.08,
16.1,
0.8'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
18.08,
13.6,
1.9'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
17.52,
14.1,
2.2'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
2.6'
tail in p.a. 86 deg);
17.48,
13.8,
3.8'
(K. Yoshimoto,
0.077-m
Refractor + CCD);
17.42,
14.0,
3.1'
(T. Lovejoy,
iTelescope Observatory, Siding Spring (MPC Q62),
0.32-m
Cassegrain reflector + CCD);
17.13,
13.1,
3.4'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
17.08,
14.9,
2.3'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
17.08,
13.4,
4.1'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
16.47,
14.2,
1'
(T. Yusa,
0.05-m
Refractor + CCD);
16.44,
13.9,
3.2'
(T. Lovejoy,
iTelescope Observatory, Siding Spring (MPC Q62),
0.51-m
Cassegrain reflector + CCD;
0.7'
tail in p.a. 90 deg);
16.43,
13.3,
3.2'
(K. Yoshimoto,
0.106-m
Refractor + CCD);
16.12,
13.5,
3.2'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
15.54,
14.2,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
15.43,
14.1,
3'
(T. Lovejoy,
iTelescope Observatory, Siding Spring (MPC Q62),
0.43-m
Cassegrain reflector + CCD;
1.6'
tail in p.a. 84 deg);
15.09,
13.6,
4.1'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
15.09,
15.0,
2.3'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
14.13,
15.2,
1'
(S. Baroni,
June Lake BirdHouse Observatory (MPC XXX),
0.36-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 78 deg);
14.07,
13.4,
3'
(V. Italo,
Warm Springs, GA,
0.2-m
Schmidt-Cassegrain + CCD;
0.8'
tail in p.a. 69 deg);
14.05,
16.3,
0.8'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
14.05,
13.7,
2.4'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
13.55,
14.5,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
13.50,
14.5,
1.9'
(A. Pearce,
Mardella Observatory,
0.43-m
Schmidt-Cassegrain + CCD;
1.3'
tail in p.a. 83 deg);
13.42,
14.4,
2.5'
(T. Lovejoy,
iTelescope Observatory, Siding Spring (MPC Q62),
0.43-m
Cassegrain reflector + CCD);
13.16,
16.9,
0.48'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
13.11,
15.3,
1.6'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD);
13.11,
13.8,
3.7'
(M. Mašek,
Malargue,
0.107-m
Camera lens + CCD);
12.54,
14.6,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 73 deg);
12.51,
14.8,
2'
(M. Mattiazzo,
0.28-m
Schmidt reflector + CCD);
12.42,
15.5,
1.5'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
12.10,
14.5,
1.7'
(C. Hergenrother,
0.51-m
Ritchey-Chretien + CCD);
11.54,
14.7,
2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 69 deg);
11.09,
14.6,
1.7'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
10.84,
15.6,
1.2'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.1-m
Refractor + CCD);
10.46,
15.5,
--
(G. van Buitenen,
Siding Spring, AU (Q62),
0.508-m
Ritchey-Chretien + CCD);
10.43,
14.7,
2.5'
(T. Lovejoy,
iTelescope Observatory, Siding Spring (MPC Q62),
0.43-m
Cassegrain reflector + CCD;
1.7'
tail in p.a. 73 deg);
09.08,
14.5,
3.2'
(M. Mašek,
Paranal,
0.067-m
Camera lens + CCD);
08.61,
15.3,
1.2'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
08.13,
15.4,
1.5'
(V. Italo,
Warm Springs, GA,
0.2-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 68 deg);
07.54,
15.9,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 69 deg);
07.44,
16.1,
1.1'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
0.8'
tail in p.a. 75 deg);
07.07,
15.4,
1.7'
(C. Hergenrother,
0.25-m
Newtonian + CCD);
07.06,
15.1,
1.9'
(M. Mašek,
Cerro Paranal (MPC 247),
0.07-m
Camera lens + CCD);
07.06,
15.7,
2'
(M. Mašek,
Malargue,
0.3-m
Cassegrain reflector + CCD;
0.5'
tail in p.a. 68 deg);
07.05,
15.3,
1.2'
(M. Mašek,
Danish Telescope, La Silla (MPC W74),
1.54-m
Cassegrain reflector + CCD;
0.8'
tail in p.a. 79 deg);
06.56,
15.8,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.6'
tail in p.a. 71 deg);
05.58,
16.1,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 70 deg);
04.54,
16.1,
1'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 64 deg);
03.41,
17.1,
0.5'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
0.4'
tail in p.a. 60 deg);
02.63,
16.7,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
02.59,
17.5,
0.3'
(J. Xiong,
Xingyuan Obs (MPC Code:O40),
0.252-m
Newtonian + CCD);
01.60,
16.9,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
jan
31.63,
17.2,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.59,
17.2,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.57,
17.3,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2026 B2 (Sun-Gao)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
23.85,
12.8,
0.6'
(T. Yusa,
0.05-m
Refractor + CCD);
21.53,
13.9,
1.2'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
20.84,
13.8,
0.9'
(T. Yusa,
0.05-m
Refractor + CCD);
18.52,
13.2,
0.9'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
16.54,
12.6,
0.9'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
14.50,
12.7,
0.8'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
08.54,
13.6,
0.9'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
08.54,
13.4,
0.9'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
08.23,
15.0,
0.24'
(P. Dekelver,
0.3-m
Newtonian + CCD);
05.86,
14.7,
0.3'
(T. Yusa,
0.05-m
Refractor + CCD);
04.22,
16.4,
0.12'
(P. Dekelver,
0.3-m
Newtonian + CCD);
02.96,
13.2,
1.2'
(J. Xiong,
Xingyuan Obs (MPC Code:O40),
0.252-m
Newtonian + CCD);
C/2026 B3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
10.13,
19.7,
0.17'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
A/2025 Y1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2026
feb
26.05,
18.4,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.20,
17.8,
0.18'
(P. Dekelver,
0.3-m
Newtonian + CCD);
23.65,
17.6,
--
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
22.67,
17.8,
--
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.66,
17.8,
--
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
19.21,
17.8,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);
10.07,
18.0,
0.23'
(R. Hill,
Tacande Observatory, La Palma (MPC J22),
0.5-m
Newtonian + CCD);