3I/ATLAS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
15.39,
14.7,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
15.13,
14.1,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
14.14,
14.1,
0.5'
(M. Olason,
Arizona,
0.091-m
Refractor + CCD;
1'
tail in p.a. 105 deg);
13.12,
14.8,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
12.82,
14.6,
0.8'
(M. Buechner,
Castilléjar, Spain,
0.14-m
Refractor + CCD;
2'
tail);
12.42,
14.1,
2.2'
(K. Yoshimoto,
0.51-m
Newtonian + CCD;
1'
tail in p.a. 103 deg);
11.61,
16.1,
--
(G. Nobre,
Manaus - X33,
2-m
Newtonian + CCD);
10.12,
14.7,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
0.4'
tail in p.a. 109 deg);
09.15,
15.0,
0.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
08.44,
15.0,
0.4'
(M. Mattiazzo,
Strathalbyn, South Australia,
0.05-m
Camera lens + CCD);
08.14,
15.2,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
06.14,
15.5,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
05.43,
15.5,
0.39'
(T. Lekatsas,
Heaven's Mirror Observatory, Yass (MPC Q56),
0.106-m
Refractor + CCD);
04.52,
15.3,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
03.53,
15.5,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
02.55,
15.6,
0.25'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
02.37,
15.7,
0.16'
(S. Badcock,
Otaki, New Zealand,
0.25-m
Newtonian + CCD);
01.78,
15.7,
0.4'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.4'
tail in p.a. 115 deg);
01.55,
15.5,
0.25'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
30.13,
15.7,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
29.87,
15.8,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
28.84,
15.4,
0.6'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD);
27.14,
16.0,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
26.81,
16.1,
0.3'
(A. Tuznik,
Ożarów, Polska,
0.061-m
Refractor + CCD);
26.46,
15.8,
0.38'
(T. Lekatsas,
iTelescope Observatory, Siding Spring (MPC Q62),
0.43-m
Cassegrain reflector + CCD);
25.83,
15.2,
0.32'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD);
25.82,
15.2,
0.4'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
25.42,
15.9,
0.32'
(T. Lekatsas,
iTelescope Observatory, Siding Spring (MPC Q62),
0.43-m
Cassegrain reflector + CCD);
24.44,
16.0,
0.32'
(T. Lekatsas,
iTelescope Observatory, Siding Spring (MPC Q62),
0.43-m
Cassegrain reflector + CCD);
24.17,
16.2,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
23.85,
15.1,
0.28'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD);
23.82,
16.1,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
23.13,
16.0,
0.2'
(M. Olason,
Tucson, Arizona,
0.05-m
Refractor + CCD);
23.06,
16.1,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
22.88,
15.6,
0.23'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD);
22.81,
16.4,
0.4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
22.59,
15.8,
0.35'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
22.40,
16.1,
0.3'
(T. Lekatsas,
iTelescope Observatory, Siding Spring (MPC Q62),
0.43-m
Cassegrain reflector + CCD);
21.87,
16.0,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
21.80,
16.0,
0.28'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
21.76,
16.2,
0.5'
(T. Lehmann,
Hakos (remote),
0.45-m
Newtonian + CCD;
0.5'
tail in p.a. 101 deg);
19.89,
16.1,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
19.82,
16.0,
0.31'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
18.85,
15.3,
0.5'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
17.40,
16.3,
0.29'
(T. Lekatsas,
iTelescope Observatory, Siding Spring (MPC Q62),
0.43-m
Cassegrain reflector + CCD);
24P/Schaumasse
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
31.34,
19.8,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
47P/Ashbrook-Jackson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.57,
15.6,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 255 deg);
01.58,
15.5,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 261 deg);
01.51,
15.1,
0.6'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD);
aug
31.58,
15.7,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
31.18,
16.3,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
30.94,
15.2,
--
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
30.59,
15.0,
0.7'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD;
0.6'
tail in p.a. 259 deg);
30.57,
15.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
3.1'
tail in p.a. 246 deg);
30.22,
15.4,
0.6'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
30.04,
16.0,
0.42'
(R. Hill,
0.5-m
Newtonian + CCD);
29.62,
15.6,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 258 deg);
27.90,
16.3,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 250 deg);
26.89,
16.4,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.5'
tail in p.a. 248 deg);
25.96,
15.5,
0.6'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
1'
tail in p.a. 259 deg);
25.91,
16.7,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
3.7'
tail in p.a. 249 deg);
23.39,
16.1,
0.6'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD;
0.08° tail in p.a. 247 deg);
22.64,
15.8,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.9'
tail in p.a. 251 deg);
22.02,
16.2,
0.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
17.98,
15.8,
1'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.11° tail in p.a. 248 deg);
48P/Johnson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.79,
16.8,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 248 deg);
aug
31.76,
16.2,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.8'
tail in p.a. 248 deg);
30.76,
16.1,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
2.2'
tail in p.a. 250 deg);
30.74,
15.8,
0.7'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD);
30.43,
16.2,
0.9'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD;
0.08° tail in p.a. 253 deg);
30.31,
17.4,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
29.77,
16.0,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 248 deg);
26.05,
16.7,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 254 deg);
22.78,
15.9,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
22.14,
17.3,
0.25'
(R. Hill,
0.5-m
Newtonian + CCD);
22.10,
17.2,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
20.10,
16.0,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.09° tail in p.a. 253 deg);
65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.77,
15.7,
0.7'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD);
24.22,
16.5,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
21.91,
15.3,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
78P/Gehrels
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
04.49,
16.9,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
02.53,
17.2,
0.35'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.49,
16.9,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
31.54,
17.2,
0.35'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.51,
16.7,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.96,
17.1,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
29.53,
16.9,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.53,
17.1,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
27.88,
17.8,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.91,
17.0,
0.2'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
25.86,
18.2,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.83,
17.0,
0.6'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD);
24.97,
17.6,
0.23'
(R. Hill,
0.5-m
Newtonian + CCD);
24.29,
17.2,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
22.51,
17.0,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.99,
17.3,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
19.91,
17.3,
0.31'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
17.83,
17.2,
0.5'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD);
93P/Lovas
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
22.08,
19.5,
0.25'
(R. Hill,
0.5-m
Newtonian + CCD);
95P/Chiron
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.89,
18.9,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
105P/Singer Brewster
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.96,
19.3,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
123P/West-Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
23.34,
20.1,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
145P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
30.00,
17.8,
0.31'
(R. Hill,
0.5-m
Newtonian + CCD);
164P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
05.14,
17.9,
0.2'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
188P/LINEAR-Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
29.96,
19.1,
0.31'
(R. Hill,
0.5-m
Newtonian + CCD);
22.03,
19.3,
0.25'
(R. Hill,
0.5-m
Newtonian + CCD);
210P/Christensen
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.66,
18.6,
0.25'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.53,
18.5,
0.25'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
30.56,
18.8,
0.25'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD);
30.55,
18.9,
0.25'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.57,
18.9,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
22.54,
18.9,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.02,
19.3,
0.17'
(R. Hill,
0.5-m
Newtonian + CCD);
217P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
09.48,
15.3,
0.6'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
01.16,
15.0,
0.7'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.45-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 266 deg);
aug
31.16,
14.8,
0.7'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.45-m
Schmidt-Cassegrain + CCD);
30.16,
14.9,
0.7'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.45-m
Schmidt-Cassegrain + CCD;
9'
tail in p.a. 264 deg);
26.10,
15.2,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2.4'
tail in p.a. 266 deg);
24.18,
14.9,
0.7'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.45-m
Schmidt-Cassegrain + CCD;
0.8'
tail in p.a. 268 deg);
20.17,
14.5,
0.7'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.45-m
Schmidt-Cassegrain + CCD;
3.1'
tail in p.a. 265 deg);
19.17,
14.6,
0.6'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.45-m
Schmidt-Cassegrain + CCD);
18.17,
14.5,
0.7'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.45-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 273 deg);
17.18,
14.7,
0.7'
(A. Pearce,
Skygems Namibia Remote Observatory,
0.45-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 264 deg);
240P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
08.47,
14.3,
0.7'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
5'
tail in p.a. 259 deg);
08.11,
14.5,
1.8'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
04.13,
14.5,
1'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
11.9'
tail in p.a. 251 deg);
03.51,
14.4,
0.7'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
5'
tail in p.a. 251 deg);
02.73,
14.7,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
3.7'
tail in p.a. 247 deg);
01.77,
13.7,
1'
(O. Miyazaki,
0.32-m
Newtonian);
01.74,
14.4,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
4.8'
tail in p.a. 246 deg);
01.12,
12.8,
1.5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
aug
31.73,
14.3,
0.9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
8'
tail in p.a. 248 deg);
31.71,
14.0,
0.9'
(K. Harikae,
0.15-m
Newtonian + CCD);
31.32,
13.2,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
30.74,
14.6,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
9.2'
tail in p.a. 247 deg);
30.73,
14.5,
0.7'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD;
3.5'
tail in p.a. 255 deg);
30.33,
13.2,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
30.33,
15.7,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
30.14,
14.9,
0.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
29.84,
14.6,
0.8'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
1.2'
tail in p.a. 243 deg);
29.79,
14.0,
0.7'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
10'
tail in p.a. 250 deg);
29.74,
14.2,
0.9'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
10'
tail in p.a. 247 deg);
29.46,
14.2,
1.5'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD;
0.15° tail in p.a. 251 deg);
28.84,
14.6,
0.9'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
3'
tail in p.a. 244 deg);
28.33,
13.4,
1'
(J. de Souza Aguiar,
0.3-m
Newtonian);
27.75,
13.2,
1.1'
(O. Miyazaki,
0.32-m
Newtonian);
26.71,
14.5,
1.1'
(K. Harikae,
0.15-m
Newtonian + CCD);
26.04,
15.4,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
7'
tail in p.a. 250 deg);
23.42,
14.6,
0.7'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
2'
tail in p.a. 249 deg);
22.84,
14.8,
0.8'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2.4'
tail in p.a. 248 deg);
22.75,
14.6,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
5.2'
tail in p.a. 248 deg);
22.15,
15.3,
0.37'
(R. Hill,
0.5-m
Newtonian + CCD);
22.14,
14.2,
1.3'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.15° tail in p.a. 249 deg);
22.12,
15.1,
0.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
20.76,
13.7,
0.9'
(O. Miyazaki,
0.32-m
Newtonian);
248P/Gibbs
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
31.30,
19.3,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
261P/Larson
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.03,
18.4,
0.23'
(R. Hill,
0.5-m
Newtonian + CCD);
302P/Lemmon-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.62,
16.6,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 252 deg);
01.66,
16.5,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.9'
tail in p.a. 254 deg);
aug
29.37,
16.6,
0.7'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD;
2.3'
tail in p.a. 257 deg);
25.93,
17.3,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 254 deg);
20.07,
16.6,
0.7'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.9'
tail in p.a. 254 deg);
303P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
23.10,
18.9,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
331P/Gibbs
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
27.24,
19.7,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
351P/Wiegert-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
01.48,
17.6,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
31.52,
16.9,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.49,
17.6,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.52,
17.5,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.51,
17.3,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
362P/Spacewatch
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.88,
19.1,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
414P/STEREO
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
14.82,
14.2,
0.8'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
06.51,
15.9,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
05.13,
16.1,
0.47'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
03.80,
15.1,
1'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
aug
31.38,
18.5,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
30.80,
17.7,
0.2'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
486P/Leonard
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
03.22,
18.2,
0.2'
(R. Hill,
0.5-m
Newtonian + CCD);
02.62,
17.7,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.65,
17.4,
0.3'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
31.65,
17.4,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.3'
tail in p.a. 250 deg);
25.95,
18.0,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.18,
18.1,
0.23'
(R. Hill,
0.5-m
Newtonian + CCD);
502P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.87,
19.3,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
24.96,
19.4,
0.23'
(R. Hill,
0.5-m
Newtonian + CCD);
C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.71,
15.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.72,
15.5,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
31.72,
15.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.71,
15.0,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.70,
15.3,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
23.08,
14.2,
1.7'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD);
22.72,
15.2,
0.7'
(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):
2025
aug
26.05,
18.2,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
22.14,
17.8,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.96,
19.6,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.83,
17.3,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
31.78,
17.2,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.78,
17.5,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
29.78,
17.6,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.59,
16.4,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.56,
16.7,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
31.60,
16.6,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.59,
16.6,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.58,
16.5,
0.5'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD);
29.58,
16.6,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.64,
16.6,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
22.62,
16.2,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
11.77,
15.3,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
10.15,
14.3,
0.8'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
04.78,
15.0,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
03.78,
15.2,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
02.48,
14.6,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.78,
15.1,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
aug
31.75,
14.6,
1.2'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
2.2'
tail in p.a. 222 deg);
31.51,
14.7,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.15,
14.4,
0.8'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
26.81,
14.5,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
4.6'
tail in p.a. 233 deg);
26.81,
15.5,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.7'
tail in p.a. 232 deg);
26.80,
15.3,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.6'
tail in p.a. 231 deg);
26.43,
14.4,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
25.84,
14.1,
1.2'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
25.80,
15.2,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.3'
tail in p.a. 234 deg);
24.80,
15.0,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
5.9'
tail in p.a. 228 deg);
23.85,
14.9,
1'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
23.76,
14.5,
1.3'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.14° tail in p.a. 232 deg);
23.54,
14.9,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
20.87,
14.7,
0.8'
(R. Hill,
0.5-m
Newtonian + CCD);
19.87,
14.8,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
17.75,
14.5,
1.2'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.15° tail in p.a. 230 deg);
C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
30.11,
18.6,
0.2'
(R. Hill,
0.5-m
Newtonian + CCD);
25.90,
18.9,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
20.91,
18.6,
0.26'
(R. Hill,
0.5-m
Newtonian + CCD);
C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
11.79,
15.7,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
06.84,
16.5,
0.3'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
05.90,
14.3,
1.1'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
04.80,
15.6,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
03.83,
15.8,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
01.82,
15.7,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
01.57,
15.2,
0.46'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
aug
31.08,
14.8,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.15° tail in p.a. 57 deg);
30.96,
15.8,
0.34'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
30.90,
15.7,
0.3'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
30.18,
15.1,
0.8'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
30.02,
14.7,
0.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
28.45,
14.8,
1.1'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD;
0.11° tail in p.a. 57 deg);
27.86,
15.7,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.88,
15.5,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.85,
16.0,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
24.85,
15.6,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 47 deg);
22.06,
15.3,
0.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
22.00,
15.3,
0.39'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
19.56,
14.7,
0.46'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
19.10,
14.7,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.16° tail in p.a. 60 deg);
19.00,
15.7,
1.3'
(M. Lošťák,
0.2-m
Newtonian + CCD);
19.00,
14.8,
1.1'
(M. Lošťák,
0.2-m
Newtonian + CCD);
18.90,
15.3,
0.25'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
05.74,
14.6,
0.9'
(K. Harikae,
0.15-m
Newtonian + CCD);
05.09,
14.6,
1'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
10.1'
tail in p.a. 257 deg);
02.80,
14.7,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.76,
13.5,
1'
(O. Miyazaki,
0.32-m
Newtonian);
aug
31.80,
14.7,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 247 deg);
31.70,
14.2,
1.2'
(K. Harikae,
0.15-m
Newtonian + CCD);
31.05,
14.9,
0.25'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
30.98,
14.1,
1.3'
(M. Lošťák,
0.2-m
Newtonian + CCD);
30.98,
15.3,
1.5'
(M. Lošťák,
0.2-m
Newtonian + CCD);
30.80,
14.6,
0.8'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 246 deg);
30.14,
14.5,
1.2'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.11° tail in p.a. 256 deg);
30.12,
14.6,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
29.81,
14.7,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 244 deg);
27.74,
14.0,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
26.70,
14.7,
1.3'
(K. Harikae,
0.15-m
Newtonian + CCD);
25.94,
15.1,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
8'
tail in p.a. 256 deg);
25.13,
13.2,
0.3'
(W. Hasubick,
0.44-m
Newtonian);
23.71,
14.6,
1.2'
(K. Harikae,
0.15-m
Newtonian + CCD);
22.82,
14.6,
0.7'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
22.11,
14.9,
0.6'
(R. Hill,
0.5-m
Newtonian + CCD);
22.08,
14.7,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
21.08,
14.8,
1.4'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
20.74,
14.1,
0.7'
(O. Miyazaki,
0.32-m
Newtonian);
20.03,
14.6,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.09° tail in p.a. 256 deg);
C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
11.80,
16.6,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
06.81,
17.5,
0.5'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
05.84,
16.7,
0.6'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.5'
tail in p.a. 61 deg);
03.81,
17.4,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
aug
30.91,
16.4,
1.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.13° tail in p.a. 90 deg);
27.85,
17.7,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.84,
17.2,
0.47'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
0.4'
tail in p.a. 97 deg);
26.83,
18.0,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.82,
17.6,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
24.85,
17.5,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
21.97,
17.7,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
21.97,
16.8,
0.34'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
21.88,
18.0,
0.17'
(R. Hill,
0.5-m
Newtonian + CCD);
19.96,
17.6,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
19.94,
17.1,
0.6'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
0.5'
tail in p.a. 97 deg);
18.90,
15.8,
1.8'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.17° tail in p.a. 89 deg);
C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
11.79,
15.8,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
06.85,
16.3,
0.6'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD);
05.88,
15.3,
0.5'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
04.81,
16.4,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
03.83,
15.9,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
03.23,
16.1,
0.28'
(R. Hill,
0.5-m
Newtonian + CCD);
01.82,
16.2,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
01.53,
15.5,
0.39'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
01.03,
15.8,
0.43'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
aug
31.05,
15.3,
1.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.05° tail in p.a. 215 deg);
30.17,
15.5,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
27.94,
15.5,
0.53'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD);
27.94,
15.1,
0.53'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD);
27.87,
15.9,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
27.45,
15.7,
0.8'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD;
1.4'
tail in p.a. 201 deg);
26.88,
16.5,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.2'
tail in p.a. 192 deg);
25.96,
15.3,
0.6'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.2'
tail in p.a. 178 deg);
25.85,
16.3,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
24.85,
16.8,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
22.04,
16.0,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
20.14,
16.0,
0.31'
(R. Hill,
0.5-m
Newtonian + CCD);
19.53,
16.0,
0.3'
(Y. Yamaguchi,
0.13-m
Hyperboloid astro-camera + CCD);
19.04,
15.3,
1.1'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.9'
tail in p.a. 223 deg);
18.96,
15.6,
0.6'
(M. Lošťák,
0.2-m
Newtonian + CCD);
18.96,
16.7,
0.6'
(M. Lošťák,
0.2-m
Newtonian + CCD);
C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
11.80,
17.5,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.3'
tail in p.a. 212 deg);
01.83,
17.1,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.7'
tail in p.a. 210 deg);
aug
30.85,
16.5,
0.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.04° tail in p.a. 208 deg);
26.89,
17.2,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.5'
tail in p.a. 200 deg);
25.83,
17.2,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
2'
tail in p.a. 205 deg);
21.89,
17.0,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
19.87,
16.6,
0.6'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.06° tail in p.a. 202 deg);
17.90,
16.6,
0.31'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD);
17.90,
16.8,
0.31'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD);
C/2023 R1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
11.78,
16.7,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
05.86,
15.5,
0.6'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
04.81,
16.4,
0.6'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
03.82,
16.3,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
03.52,
15.6,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
02.52,
15.5,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
01.81,
15.7,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
01.53,
15.3,
0.6'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD);
01.51,
15.7,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
31.87,
15.8,
0.47'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
30.95,
15.5,
0.8'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.5'
tail in p.a. 79 deg);
30.88,
15.6,
0.4'
(M. Lošťák,
0.2-m
Newtonian + CCD);
30.83,
15.9,
0.28'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
30.54,
15.3,
0.6'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD);
30.53,
15.5,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
30.19,
15.8,
0.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
29.98,
16.1,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
29.83,
15.5,
0.39'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
29.55,
15.8,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.55,
15.7,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.52,
15.2,
0.4'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
0.5'
tail in p.a. 80 deg);
27.88,
15.9,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.90,
15.5,
0.6'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
26.87,
15.4,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.93,
15.0,
0.7'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
25.93,
15.6,
0.6'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.6'
tail in p.a. 99 deg);
25.84,
16.0,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
24.83,
15.7,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
22.52,
15.5,
0.6'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.98,
15.9,
0.34'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
19.98,
16.1,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
18.96,
14.4,
1.4'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
18.95,
15.3,
0.9'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.7'
tail in p.a. 80 deg);
18.93,
15.3,
2.2'
(M. Lošťák,
0.2-m
Newtonian + CCD);
18.93,
13.9,
2.4'
(M. Lošťák,
0.2-m
Newtonian + CCD);
18.91,
14.8,
1'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
C/2023 RS61
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
30.05,
17.8,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2023 T3 (Fuls)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.50,
16.6,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
aug
31.48,
16.5,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2023 X1 (Leonard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
30.08,
18.3,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2023 X2 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.88,
18.4,
0.4'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
22.20,
18.5,
0.17'
(R. Hill,
0.5-m
Newtonian + CCD);
C/2024 A1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
05.11,
16.9,
0.47'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
C/2024 B1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
19.93,
19.0,
0.2'
(R. Hill,
0.5-m
Newtonian + CCD);
C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
14.86,
13.5,
1.2'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
14.82,
14.2,
2.2'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
11.78,
14.9,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.5'
tail in p.a. 42 deg);
10.88,
14.6,
0.7'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
1.3'
tail in p.a. 35 deg);
10.16,
13.9,
0.7'
(M. Mattiazzo,
0.5-m
Newtonian + CCD;
0.9'
tail in p.a. 42 deg);
08.84,
14.6,
0.5'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
0.8'
tail in p.a. 45 deg);
06.82,
15.0,
1.1'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 43 deg);
05.84,
14.3,
0.4'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
0.8'
tail in p.a. 39 deg);
05.81,
14.5,
0.8'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
1.3'
tail in p.a. 55 deg);
04.83,
14.3,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.8'
tail in p.a. 42 deg);
04.83,
14.8,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.8'
tail in p.a. 43 deg);
04.82,
15.0,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 49 deg);
04.82,
15.1,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 49 deg);
03.89,
14.7,
0.7'
(R. Hill,
0.5-m
Newtonian + CCD);
03.82,
14.2,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.1'
tail in p.a. 37 deg);
03.81,
14.7,
1.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 39 deg);
03.81,
14.9,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 47 deg);
02.87,
14.7,
0.63'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
1.2'
tail in p.a. 42 deg);
01.89,
13.9,
0.55'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
72" tail in p.a. 45 deg);
01.81,
14.2,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 49 deg);
01.80,
14.8,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 44 deg);
01.80,
15.0,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.6'
tail in p.a. 42 deg);
aug
31.86,
14.7,
0.9'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
1.5'
tail in p.a. 39 deg);
30.88,
13.8,
4.4'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.9'
tail in p.a. 53 deg);
30.86,
15.1,
0.4'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
30.84,
13.9,
1.8'
(M. Lošťák,
0.2-m
Newtonian + CCD);
30.84,
14.9,
1.8'
(M. Lošťák,
0.2-m
Newtonian + CCD);
29.93,
14.8,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
29.89,
14.9,
0.6'
(R. Hill,
0.5-m
Newtonian + CCD);
29.86,
15.2,
0.39'
(S. Shurpakov,
0.41-m
Newtonian + CCD;
0.4'
tail in p.a. 50 deg);
27.88,
14.1,
1.1'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD;
1.8'
tail in p.a. 42 deg);
27.88,
14.3,
1.1'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD;
2.2'
tail in p.a. 47 deg);
27.84,
13.9,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.3'
tail in p.a. 44 deg);
27.84,
14.8,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1'
tail in p.a. 60 deg);
27.83,
15.1,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 48 deg);
26.85,
14.6,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.8'
tail in p.a. 52 deg);
26.84,
15.3,
0.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.7'
tail in p.a. 60 deg);
26.84,
15.5,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.1'
tail in p.a. 56 deg);
25.89,
14.2,
1'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
0.9'
tail in p.a. 54 deg);
25.83,
15.2,
1'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1'
tail in p.a. 58 deg);
24.83,
15.0,
1.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.8'
tail in p.a. 66 deg);
23.89,
15.1,
0.5'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
21.95,
15.3,
0.34'
(S. Shurpakov,
0.41-m
Newtonian + CCD);
20.88,
15.1,
0.6'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
19.98,
15.4,
0.31'
(R. Hill,
0.5-m
Newtonian + CCD);
19.93,
14.6,
0.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
18.89,
14.8,
0.6'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
18.89,
14.9,
2.8'
(M. Lošťák,
0.2-m
Newtonian + CCD);
18.89,
14.5,
1'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
1'
tail in p.a. 45 deg);
18.89,
13.7,
2.4'
(M. Lošťák,
0.2-m
Newtonian + CCD);
18.87,
14.4,
2.1'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
18.86,
14.5,
2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.3'
tail in p.a. 58 deg);
17.90,
15.2,
0.2'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
C/2024 G6 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
22.56,
18.1,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
C/2024 J2 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
22.18,
18.2,
0.17'
(R. Hill,
0.5-m
Newtonian + CCD);
22.16,
15.6,
1.9'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD);
C/2024 J3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
11.77,
15.9,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
10.15,
15.4,
0.3'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
05.83,
15.9,
0.3'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
aug
30.55,
15.5,
0.4'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD);
29.91,
15.4,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
29.49,
15.7,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
28.48,
15.4,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
27.86,
16.0,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
26.83,
16.3,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
24.84,
16.0,
0.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
23.96,
15.4,
0.7'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.5'
tail in p.a. 161 deg);
22.48,
15.5,
0.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD);
21.95,
15.6,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
19.96,
16.1,
0.31'
(R. Hill,
0.5-m
Newtonian + CCD);
C/2024 N3 (Sarneczky)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.91,
18.0,
0.5'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
25.88,
17.4,
0.4'
(E. Bryssinck,
0.4-m
Newtonian + CCD);
C/2024 R4 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
30.99,
17.2,
0.5'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.1'
tail in p.a. 154 deg);
28.43,
17.3,
0.4'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD);
25.93,
18.1,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
18.99,
17.4,
0.4'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD);
C/2024 T5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
02.68,
16.0,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 245 deg);
01.69,
15.9,
0.45'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 249 deg);
aug
31.70,
16.0,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.2'
tail in p.a. 260 deg);
30.68,
16.1,
0.4'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.4'
tail in p.a. 248 deg);
30.68,
16.0,
0.4'
(A. Pearce,
Mardella Observatory,
1-m
Newtonian + CCD;
0.5'
tail in p.a. 250 deg);
30.09,
16.1,
0.6'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
1.2'
tail in p.a. 252 deg);
29.67,
16.1,
0.45'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
0.5'
tail in p.a. 243 deg);
18.04,
16.2,
0.5'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.4'
tail in p.a. 245 deg);
C/2025 A6 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
15.07,
9.1,
3.4'
(A. Novichonok,
Simeiz Observatory,
0.15-m
Newtonian);
14.81,
8.9,
5'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
10'
tail in p.a. 291 deg);
14.15,
9.2,
4'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
14.14,
9.1,
6.39'
(N. James,
0.072-m
Refractor + CCD);
14.12,
8.5,
3.8'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain;
3.7'
tail in p.a. 273 deg);
14.07,
9.3,
3'
(A. Novichonok,
Simeiz Observatory,
0.15-m
Newtonian);
13.14,
9.2,
4.5'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
12.41,
9.5,
4.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
10'
tail in p.a. 295 deg);
12.13,
8.2,
4.4'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain;
4'
tail in p.a. 279 deg);
12.11,
9.4,
4.4'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
12.11,
9.3,
6.2'
(N. James,
0.072-m
Refractor + CCD);
11.49,
9.6,
2.7'
(M. Mattiazzo,
0.5-m
Newtonian + CCD);
11.16,
9.2,
4.4'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
4'
tail in p.a. 293 deg);
11.12,
9.4,
3.7'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
11.10,
9.5,
4.32'
(N. James,
0.072-m
Refractor + CCD);
09.50,
9.8,
4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
15'
tail in p.a. 291 deg);
09.13,
10.1,
2.7'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
09.11,
10.1,
3'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
08.50,
9.9,
4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
15'
tail in p.a. 291 deg);
08.07,
9.8,
5.6'
(M. Šrejber,
Hvezdarna a planetarium Hradec Kralove (MPC 048),
0.25-m
Newtonian + CCD;
27.2'
tail in p.a. 292 deg);
07.78,
10.2,
2.6'
(O. Miyazaki,
0.32-m
Newtonian);
07.13,
10.3,
5'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD;
0.07° tail in p.a. 303 deg);
07.11,
10.0,
4'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
06.49,
10.1,
4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
15'
tail in p.a. 290 deg);
06.20,
9.8,
4'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
2.3'
tail in p.a. 293 deg);
06.11,
9.4,
5.5'
(C. Harder,
Jeersdorf h,
0.252-m
Newtonian);
06.11,
9.9,
4'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
05.79,
9.8,
4'
(K. Yoshimoto,
20x100
Binoculars);
05.78,
10.1,
2.8'
(O. Miyazaki,
0.32-m
Newtonian);
05.78,
10.0,
2'
(R. Aikawa,
0.203-m
Schmidt-Cassegrain);
05.74,
10.3,
3.2'
(K. Harikae,
0.15-m
Newtonian + CCD);
05.20,
10.1,
2.2'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD);
05.11,
9.9,
3.5'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
05.10,
9.9,
9.6'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
26.8'
tail in p.a. 290 deg);
04.11,
10.1,
7.3'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD;
20.7'
tail in p.a. 288 deg);
04.10,
9.8,
3.5'
(M. Meyer,
0.152-m
Refractor);
04.09,
10.0,
3'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
04.06,
10.2,
3'
(E. Banach,
0.25-m
Newtonian);
03.81,
10.2,
3.1'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
30'
tail in p.a. 290 deg);
03.81,
9.9,
5.8'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
30'
tail in p.a. 290 deg);
03.81,
10.6,
5.8'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
20'
tail in p.a. 290 deg);
03.50,
10.3,
4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
03.17,
10.2,
6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
03.11,
10.0,
3'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
03.08,
11.4,
1.4'
(M. Uhlar,
0.3-m
Newtonian + CCD);
03.07,
10.2,
3'
(M. Uhlar,
0.3-m
Newtonian + CCD);
02.50,
10.4,
4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
02.11,
10.5,
3.38'
(N. James,
0.072-m
Refractor + CCD);
02.10,
10.0,
4'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
02.08,
9.9,
4'
(P. Guzik,
25x100
Binoculars);
01.82,
10.0,
5.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
10'
tail in p.a. 290 deg);
01.79,
10.6,
3'
(Y. Nagai,
0.044-m
Camera lens + CCD);
01.78,
10.9,
2.7'
(O. Miyazaki,
0.32-m
Newtonian);
01.17,
10.1,
5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
01.11,
10.6,
3.38'
(N. James,
0.072-m
Refractor + CCD);
01.11,
10.9,
3'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
aug
31.79,
10.8,
2.6'
(K. Harikae,
0.15-m
Newtonian + CCD);
31.15,
11.1,
2'
(C. Labordena,
La Serratella,
0.2-m
Schmidt-Cassegrain);
31.14,
10.5,
1'
(W. Hasubick,
0.44-m
Newtonian);
31.11,
10.3,
8.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.17° tail in p.a. 288 deg);
31.11,
10.5,
3'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
31.10,
10.0,
4'
(M. Meyer,
0.254-m
Newtonian);
31.09,
10.9,
6.4'
(M. Lošťák,
0.2-m
Newtonian + CCD);
31.09,
10.8,
6.6'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
31.09,
11.3,
2.3'
(U. Pilz,
0.32-m
Newtonian);
31.09,
11.0,
6.4'
(M. Lošťák,
0.2-m
Newtonian + CCD);
31.07,
10.8,
2.5'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
30.49,
10.8,
3.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
30.47,
10.1,
9.9'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD;
0.06° tail in p.a. 287 deg);
30.17,
11.0,
5'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD);
30.17,
10.8,
4.3'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
30.12,
11.0,
2.82'
(N. James,
0.072-m
Refractor + CCD);
30.11,
10.8,
2.5'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
29.95,
10.8,
2.4'
(A. Novichonok,
Padozero logging,
0.2-m
Newtonian);
29.82,
10.2,
3.6'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
5'
tail in p.a. 290 deg);
29.78,
10.5,
1.8'
(O. Miyazaki,
0.32-m
Newtonian);
28.82,
10.1,
3.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
2'
tail in p.a. 285 deg);
28.47,
10.1,
9.6'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD;
0.13° tail in p.a. 287 deg);
28.12,
10.4,
7.3'
(D. Buczynski,
Tarbatness MPC Code I81,
0.35-m
Schmidt-Cassegrain + CCD);
28.09,
10.5,
3.1'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
28.07,
10.5,
3.5'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD);
28.07,
11.2,
3.5'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD);
27.78,
11.3,
1.6'
(O. Miyazaki,
0.32-m
Newtonian);
27.48,
10.8,
3.5'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
27.09,
10.9,
3.1'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
26.79,
11.3,
2.2'
(K. Harikae,
0.15-m
Newtonian + CCD);
26.11,
10.8,
5.8'
(J. Zakrajšek,
Crni Vrh Observatory (MPC 106),
0.6-m
Prime focus of a reflector + CCD);
26.09,
10.8,
3'
(M. Meyer,
0.254-m
Newtonian);
26.08,
12.6,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
0.9'
tail in p.a. 284 deg);
26.08,
11.2,
2.8'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.2'
tail in p.a. 284 deg);
26.07,
11.9,
3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
1.4'
tail in p.a. 284 deg);
25.13,
11.3,
0.8'
(W. Hasubick,
0.44-m
Newtonian);
25.12,
10.9,
4'
(D. Buczynski,
Tarbatness MPC Code I81,
0.35-m
Schmidt-Cassegrain + CCD);
25.09,
10.9,
2.5'
(M. Meyer,
0.254-m
Newtonian);
25.09,
10.9,
2'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
24.10,
10.9,
2.5'
(M. Meyer,
0.254-m
Newtonian);
23.78,
11.8,
2.1'
(K. Harikae,
0.15-m
Newtonian + CCD);
23.77,
11.3,
1.5'
(O. Miyazaki,
0.32-m
Newtonian);
23.47,
10.6,
9.1'
(T. Lehmann,
PieTown (remote),
0.3-m
Newtonian + CCD);
23.45,
11.3,
2'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD);
23.10,
11.0,
2'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
22.16,
11.3,
4.5'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
22.08,
11.2,
5.5'
(M. Lošťák,
0.2-m
Newtonian + CCD);
22.08,
11.7,
5.5'
(M. Lošťák,
0.2-m
Newtonian + CCD);
21.81,
11.2,
2.2'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
21.80,
11.2,
3.9'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
0.4'
tail in p.a. 295 deg);
21.80,
11.8,
2'
(K. Yoshimoto,
0.3-m
Newtonian + CCD);
21.16,
10.6,
5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
C/2025 J1 (Borisov)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
25.92,
19.1,
0.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD);
C/2025 K1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
12.43,
11.1,
1.1'
(M. Mattiazzo,
0.28-m
Newtonian + CCD);
10.12,
11.5,
1.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
2.5'
tail in p.a. 103 deg);
09.15,
11.5,
1.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
5'
tail in p.a. 102 deg);
08.78,
11.5,
2'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
08.42,
11.9,
1.5'
(M. Mattiazzo,
Strathalbyn, South Australia,
0.05-m
Camera lens + CCD;
4'
tail in p.a. 101 deg);
06.78,
11.4,
2'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
05.77,
11.5,
2'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
04.77,
11.5,
2'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
03.81,
11.5,
4'
(U. Pilz,
0.035-m
Refractor + CCD);
03.48,
12.1,
1.4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2'
tail in p.a. 102 deg);
02.75,
11.5,
3.9'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.09° tail in p.a. 98 deg);
02.47,
12.5,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2.5'
tail in p.a. 102 deg);
02.47,
12.3,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
3.1'
tail in p.a. 96 deg);
01.78,
12.7,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
10.1'
tail in p.a. 99 deg);
01.47,
12.3,
1.4'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2.6'
tail in p.a. 93 deg);
aug
31.50,
12.4,
1.5'
(A. Pearce,
Perth Observatory, Bickley,
0.35-m
Schmidt-Cassegrain + CCD;
4.4'
tail in p.a. 94 deg);
31.48,
12.5,
1.3'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
3.8'
tail in p.a. 97 deg);
30.83,
11.6,
2'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
30.82,
11.7,
3.9'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.19° tail in p.a. 96 deg);
30.49,
12.6,
1.2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
2'
tail in p.a. 98 deg);
30.15,
12.1,
1.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
2'
tail in p.a. 95 deg);
29.89,
12.2,
2'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
29.48,
12.6,
1.2'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
1.6'
tail in p.a. 104 deg);
28.48,
12.4,
1.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
7.4'
tail in p.a. 97 deg);
27.95,
11.8,
1.5'
(J. de Souza Aguiar,
0.3-m
Newtonian);
27.82,
11.4,
0.53'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD;
2'
tail in p.a. 100 deg);
27.82,
11.8,
0.53'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD;
3.3'
tail in p.a. 100 deg);
27.82,
12.5,
1'
(J. Powichrowski,
Knyszyn,
0.35-m
Newtonian);
27.20,
12.3,
1.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
2'
tail in p.a. 91 deg);
26.82,
12.8,
2.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
15.2'
tail in p.a. 95 deg);
26.82,
13.0,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
16'
tail in p.a. 96 deg);
26.82,
11.5,
1.1'
(V. Gonano,
Udine, Italy,
20x80
Binoculars);
26.81,
13.2,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
18'
tail in p.a. 97 deg);
26.44,
11.5,
1'
(C. Wyatt,
0.4-m
Newtonian;
5.5'
tail in p.a. 87 deg);
25.95,
11.9,
1.5'
(J. de Souza Aguiar,
0.3-m
Newtonian);
25.86,
11.8,
2.4'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
3.6'
tail in p.a. 98 deg);
25.82,
12.1,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
27.2'
tail in p.a. 96 deg);
25.81,
12.9,
2.2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
24.4'
tail in p.a. 98 deg);
25.81,
12.7,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
24.1'
tail in p.a. 95 deg);
24.91,
13.0,
1'
(R. Hill,
0.5-m
Newtonian + CCD);
24.86,
11.8,
1.4'
(C. Harder,
nahe Westerholz,
0.252-m
Newtonian);
24.85,
12.0,
1.5'
(M. Meyer,
0.254-m
Newtonian);
24.84,
12.2,
1.3'
(A. Kammerer,
Les Bruyeres (Vercors, 1000m altitude), France,
0.397-m
Newtonian);
24.82,
12.8,
1.7'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
26.4'
tail in p.a. 94 deg);
24.82,
12.2,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
24.2'
tail in p.a. 98 deg);
24.82,
13.0,
2.3'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
22.1'
tail in p.a. 97 deg);
24.81,
13.1,
2'
(J. Koukal,
Valasske Mezirici,
0.5-m
Newtonian + CCD;
22.6'
tail in p.a. 98 deg);
23.88,
13.0,
0.6'
(M. Phillips,
ASERO Trevinca Skies, Spain,
0.3-m
Newtonian + CCD;
5'
tail in p.a. 95 deg);
23.88,
11.9,
1.2'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian);
23.85,
12.4,
1'
(A. Kammerer,
Les Bruyeres (Vercors, 1000m altitude), France,
0.397-m
Newtonian);
23.84,
13.2,
1.4'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
5.1'
tail in p.a. 93 deg);
23.81,
11.5,
5.4'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.22° tail in p.a. 96 deg);
23.48,
11.7,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
23.45,
12.6,
1.6'
(T. Lekatsas,
Heaven's Mirror Observatory, Yass (MPC Q56),
0.106-m
Refractor + CCD);
23.15,
12.5,
1.4'
(M. Olason,
Arizona,
0.05-m
Refractor + CCD;
2'
tail in p.a. 96 deg);
22.90,
13.5,
0.56'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD;
146" tail in p.a. 98 deg);
22.86,
11.7,
1.5'
(C. Labordena,
Culla,
0.2-m
Schmidt-Cassegrain);
22.83,
13.6,
1.2'
(T. Csorgei,
0.28-m
Schmidt-Cassegrain + CCD;
6.9'
tail in p.a. 96 deg);
22.52,
12.5,
1.5'
(A. Pearce,
Nedlands, Perth,
0.05-m
Refractor + CCD;
5.2'
tail in p.a. 97 deg);
21.96,
12.0,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
21.93,
12.5,
12.1'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
21.85,
12.2,
2.5'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD);
21.76,
12.5,
2.1'
(J. Chambó Bris,
Hakos, Namibia,
0.106-m
Refractor + CCD;
19.5'
tail in p.a. 98 deg);
21.46,
12.5,
0.4'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
1'
tail in p.a. 97 deg);
21.46,
11.1,
1.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
12'
tail in p.a. 97 deg);
21.46,
11.8,
1.3'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
12'
tail in p.a. 97 deg);
20.95,
12.0,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
20.90,
11.4,
2.5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
20.55,
11.9,
1'
(O. Miyazaki,
0.32-m
Newtonian);
20.00,
12.8,
0.9'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian;
1.6'
tail);
19.95,
12.9,
1.1'
(R. Hill,
0.5-m
Newtonian + CCD);
19.94,
11.9,
1.2'
(W. Kutschera,
0.25-m
Newtonian);
19.91,
12.3,
2.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
19.87,
11.9,
1.2'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian;
2.3'
tail in p.a. 85 deg);
19.87,
12.6,
0.8'
(T. Karhula,
Virsbo, Sweden,
0.305-m
Newtonian);
19.85,
11.8,
4'
(U. Pilz,
Leipzig,
0.035-m
Refractor + CCD;
0.18° tail in p.a. 99 deg);
19.84,
11.7,
5.2'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.25° tail in p.a. 98 deg);
19.83,
11.7,
1.8'
(M. Meyer,
0.254-m
Newtonian);
18.97,
12.1,
2'
(J. de Souza Aguiar,
0.3-m
Newtonian);
18.91,
&11.7,
3'
(M. Deconinck,
Journal Belgium,
62x120
Binoculars);
18.89,
11.9,
1.3'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian;
2.3'
tail in p.a. 90 deg);
18.87,
12.5,
1.5'
(E. Bryssinck,
0.4-m
Newtonian + CCD;
4.2'
tail in p.a. 100 deg);
18.84,
11.8,
6.4'
(M. Lošťák,
0.2-m
Newtonian + CCD);
18.84,
12.5,
6.4'
(M. Lošťák,
0.2-m
Newtonian + CCD);
18.84,
11.8,
4.3'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
0.31° tail in p.a. 98 deg);
18.83,
11.8,
1.4'
(M. Meyer,
0.254-m
Newtonian);
18.52,
11.4,
1.1'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
8'
tail in p.a. 100 deg);
18.52,
12.0,
1.1'
(K. Yoshimoto,
0.3-m
Newtonian + CCD;
8'
tail in p.a. 100 deg);
17.97,
12.1,
1.5'
(J. de Souza Aguiar,
0.3-m
Newtonian);
17.89,
12.0,
1.2'
(C. Harder,
nahe Westerholz,
0.531-m
Newtonian;
2.5'
tail in p.a. 100 deg);
17.86,
12.0,
0.9'
(M. Kwinta,
0.3-m
Newtonian);
17.83,
11.8,
1.3'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD;
4'
tail in p.a. 100 deg);
17.83,
12.0,
1.3'
(M. Paradowski,
Dabrowa, Poland,
0.254-m
Schmidt-Newtonian + CCD;
5'
tail in p.a. 100 deg);
17.80,
11.7,
4.7'
(T. Lehmann,
Hakos (remote),
0.106-m
Refractor + CCD;
0.28° tail in p.a. 100 deg);
C/2025 R2 (SWAN)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
sep
14.94,
7.1,
2'
(M. Goiato,
20x100
Binoculars;
0.2° tail in p.a. 120 deg);
13.94,
6.9,
2'
(M. Goiato,
20x100
Binoculars;
0.25° tail in p.a. 120 deg);
A/2025 P1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
23.13,
21.0,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
P/2005 J1 (McNaught)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
23.04,
19.5,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
P/2012 T2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
22.25,
19.9,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
P/2016 P5 (COIAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
27.14,
19.8,
8'
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
26.05,
19.7,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);
P/2025 Q2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2025
aug
30.25,
20.8,
--
(J. Maikner,
Comet Hunter Observatory2, New Ringgold,
0.305-m
Hyperboloid astro-camera + CCD);