12P/Pons-Brooks
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
24.35,
4.9,
3.8'
(C. Wyatt,
15x70
Binoculars;
30'
tail in p.a. 93 deg);
23.92,
4.2,
5'
(M. Goiato,
20x100
Binoculars;
0.5° tail in p.a. 100 deg);
23.83,
4.5,
5'
(J. Navarro Pina,
Mirador Cabezo Blanco ( Murcia , Spain ),
20x80
Binoculars);
23.82,
4.7,
5'
(J. Navarro Pina,
Mirador Cabezo Blanco ( Murcia , Spain ),
20x80
Binoculars);
23.35,
4.7,
3.9'
(C. Wyatt,
15x70
Binoculars;
19.5'
tail in p.a. 90 deg);
22.35,
4.8,
3.7'
(C. Wyatt,
15x70
Binoculars;
22'
tail in p.a. 90 deg);
21.92,
4.4,
5'
(M. Goiato,
20x100
Binoculars;
0.3° tail in p.a. 95 deg);
21.91,
4.4,
5'
(W. Souza,
20x80
Binoculars;
0.25° tail in p.a. 90 deg);
21.90,
4.4,
5'
(W. Souza,
10x42.0
Binoculars);
21.90,
4.5,
5'
(A. Amorim,
10x50
Binoculars);
21.83,
4.5,
4'
(J. Navarro Pina,
Sierra de Carrascoy ( Murcia , Spain ),
20x80
Binoculars);
21.36,
4.5,
2.3'
(C. Wyatt,
15x70
Binoculars;
9.2'
tail in p.a. 89 deg);
20.92,
4.3,
5'
(M. Goiato,
20x100
Binoculars;
0.5° tail in p.a. 90 deg);
20.89,
4.7,
3'
(A. Amorim,
10x50
Binoculars);
19.92,
4.3,
5'
(M. Goiato,
20x100
Binoculars;
0.5° tail in p.a. 90 deg);
19.90,
4.3,
5'
(W. Souza,
7x50
Binoculars);
19.90,
4.6,
4'
(A. Amorim,
10x50
Binoculars);
19.81,
4.5,
5'
(V. Gonano,
Udine, Italy,
10x50
Binoculars;
0.5° tail in p.a. 90 deg);
19.36,
4.7,
5'
(C. Wyatt,
15x70
Binoculars;
15'
tail in p.a. 95 deg);
18.92,
3.9,
4'
(M. Goiato,
20x100
Binoculars);
18.90,
4.3,
5'
(A. Amorim,
10x50
Binoculars);
17.90,
4.5,
--
(S. de Souza,
0.06-m
Refractor);
16.82,
4.5,
5'
(J. Navarro Pina,
Molina de Segura ( Murcia ),
20x80
Binoculars);
16.81,
4.5,
5'
(V. Gonano,
Udine, Italy,
10x50
Binoculars);
15.74,
4.6,
5'
(N. Virnina,
Odessa, Ukraine,
15x50
Binoculars);
15.46,
4.4,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x);
14.82,
4.1,
4'
(J. Navarro Pina,
Mirador Cabezo Blanco ( Murcia , Spain ),
20x80
Binoculars);
14.81,
4.1,
4'
(V. Gonano,
Udine, Italy,
10x50
Binoculars);
14.46,
4.3,
6'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x);
13.83,
4.6,
5'
(C. Labordena,
Culla,
10x50
Binoculars;
20'
tail);
13.81,
4.2,
5'
(J. Navarro Pina,
Mirador Cabezo Blanco ( Murcia , Spain ),
20x80
Binoculars);
13.77,
4.4,
5'
(P. Guzik,
10x42.0
Binoculars);
13.47,
4.4,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.018-m
Monocular 1x);
13.46,
4.0,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
0.3° tail in p.a. 65 deg);
13.45,
4.1,
--
(K. Yoshimoto,
8x42.0
Binoculars;
1° tail in p.a. 70 deg);
13.08,
6.0,
--
(B. Young,
Tulsa OK USA,
8x40
Binoculars);
12.84,
4.2,
5'
(J. Gonzalez Suarez,
Collada de Aralla, 1500 m, Leon,
10x50
Binoculars;
1.2° tail in p.a. 50 deg);
12.83,
4.1,
5'
(V. Gonano,
Udine, Italy,
10x50
Binoculars;
1.1° tail in p.a. 50 deg);
12.82,
4.3,
5'
(J. Navarro Pina,
San Jose de la Montaña ( Murcia , Spain ),
20x80
Binoculars);
12.77,
4.5,
4'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
12.77,
4.4,
5'
(P. Guzik,
10x42.0
Binoculars);
12.46,
4.1,
4'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x);
12.12,
4.7,
6'
(C. Hergenrother,
10x50
Binoculars);
11.81,
4.1,
5'
(J. Navarro Pina,
Ribera de Molina ( Murcia ),
20x80
Binoculars);
11.78,
4.2,
10'
(M. Paradowski,
Zalew Zemborzycki, Poland,
0.034-m
Camera lens + CCD;
25'
tail in p.a. 55 deg);
11.78,
4.2,
10'
(M. Paradowski,
Zalew Zemborzycki, Poland,
0.034-m
Camera lens + CCD;
25'
tail in p.a. 55 deg);
11.78,
4.5,
10'
(M. Paradowski,
0.034-m
Camera lens + CCD;
25'
tail in p.a. 55 deg);
11.78,
4.2,
5'
(P. Guzik,
10x42.0
Binoculars);
11.78,
4.1,
10'
(M. Paradowski,
0.034-m
Camera lens + CCD;
25'
tail in p.a. 55 deg);
11.78,
4.1,
10'
(M. Paradowski,
Zalew Zemborzycki, Poland,
0.034-m
Camera lens + CCD;
25'
tail in p.a. 55 deg);
11.77,
[4.0,
--
(M. Paradowski,
Zalew Zemborzycki, Poland,
10x60
Binoculars);
11.77,
4.1,
10'
(M. Paradowski,
Zalew Zemborzycki, Poland,
0.034-m
Camera lens + CCD;
20'
tail in p.a. 55 deg);
11.77,
4.1,
10'
(M. Paradowski,
Zalew Zemborzycki, Poland,
0.034-m
Camera lens + CCD;
20'
tail in p.a. 55 deg);
11.46,
4.3,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x);
10.92,
4.2,
3'
(M. Goiato,
20x100
Binoculars);
10.90,
4.9,
13.2'
(W. Kutschera,
0.08-m
Refractor;
0.5° tail);
10.82,
4.0,
5'
(M. Meyer,
10x50
Binoculars);
10.82,
4.7,
6'
(A. Kammerer,
Voelkersbach (Black Forest), Germany,
9x63.0
Binoculars;
0.6° tail in p.a. 50 deg);
10.82,
4.5,
--
(A. Russo,
Gibraltar,
15x50
Binoculars);
10.82,
4.3,
5'
(V. Gonano,
Udine, Italy,
10x50
Binoculars);
10.81,
5.4,
16.5'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.6° tail in p.a. 51 deg);
10.81,
4.5,
2'
(V. Kasten,
15x50
Binoculars);
10.81,
4.5,
7.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.42° tail in p.a. 48 deg);
10.80,
4.3,
5'
(J. Navarro Pina,
San Jose de la Montaña ( Murcia , Spain ),
20x80
Binoculars);
10.80,
4.0,
--
(U. Pilz,
7x50
Binoculars);
10.77,
4.0,
4'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
10.74,
4.5,
4'
(N. Virnina,
Odessa, Ukraine,
15x50
Binoculars);
10.46,
4.5,
4'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x);
10.43,
4.8,
3.5'
(O. Miyazaki,
7x50
Binoculars;
16'
tail in p.a. 57 deg);
09.84,
4.1,
5'
(C. Labordena,
La Serra d Engarcera,
10x50
Binoculars;
40'
tail);
09.80,
4.0,
6'
(J. Navarro Pina,
San Jose de la Montaña ( Murcia , Spain ),
20x80
Binoculars);
09.80,
4.5,
6'
(J. Powichrowski,
Knyszyn,
7x50
Binoculars);
09.74,
4.8,
5'
(N. Virnina,
Odessa, Ukraine,
15x50
Binoculars);
08.85,
3.8,
5'
(J. Gonzalez Suarez,
Santas Martas, 838 m, Leon,
Naked eye);
08.84,
3.9,
5'
(J. Gonzalez Suarez,
Santas Martas, 838 m, Leon,
10x50
Binoculars;
1.8° tail in p.a. 50 deg);
08.82,
4.0,
5'
(V. Gonano,
Udine, Italy,
10x50
Binoculars;
1° tail in p.a. 50 deg);
08.82,
4.3,
--
(A. Russo,
Gibraltar,
15x50
Binoculars);
08.80,
3.8,
10'
(J. Navarro Pina,
San Jose de la Montaña ( Murcia , Spain ),
20x80
Binoculars;
1° tail);
08.78,
4.2,
5'
(P. Guzik,
Naked eye);
08.78,
4.3,
5'
(P. Guzik,
10x42.0
Binoculars;
1° tail in p.a. 50 deg);
08.77,
4.0,
4'
(G. Pappa,
Pedara,Sicily,Italy,
12x50
Binoculars);
08.76,
3.7,
4'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
08.47,
[4.7,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.018-m
Monocular 1x);
08.46,
4.3,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
0.5° tail in p.a. 48 deg);
08.08,
5.5,
--
(B. Young,
Tulsa OK USA,
8x40
Binoculars);
08.04,
4.1,
5'
(B. Granslo,
Kingston, ON, Canada,
10x42.0
Binoculars;
0.4° tail);
07.82,
4.4,
10'
(T. Csorgei,
Bratislava, SK,
0.12-m
Refractor;
1° tail in p.a. 60 deg);
07.81,
4.5,
--
(J. Warell,
Lindby Observatory (K60), Skurup, Sweden,
7x50
Binoculars);
07.78,
4.3,
6'
(P. Guzik,
10x42.0
Binoculars;
1.4° tail in p.a. 50 deg);
07.77,
4.3,
5'
(M. Kwinta,
15x70
Binoculars;
1° tail in p.a. 53 deg);
07.77,
4.0,
4'
(T. Sciezor,
25x100
Binoculars;
23'
tail in p.a. 50 deg);
07.75,
4.4,
5'
(N. Virnina,
Odessa, Ukraine,
15x50
Binoculars);
07.47,
4.3,
7'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.018-m
Monocular 1x);
07.46,
4.1,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
1° tail in p.a. 48 deg);
06.81,
4.0,
8'
(J. Powichrowski,
Knyszyn,
7x50
Binoculars;
1° tail in p.a. 40 deg);
06.78,
3.5,
6'
(S. Shurpakov,
0.07-m
Refractor);
06.78,
3.9,
20'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.4° tail in p.a. 44 deg);
06.77,
4.4,
6'
(M. Kwinta,
15x70
Binoculars;
1° tail in p.a. 50 deg);
06.77,
4.1,
5'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
06.76,
4.2,
5'
(G. Pappa,
Pedara,Sicily,Italy,
12x50
Binoculars);
06.46,
4.0,
6'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
0.6° tail in p.a. 45 deg);
05.82,
4.2,
12'
(T. Csorgei,
Hortobágy, Hungary,
0.12-m
Refractor;
1° tail in p.a. 50 deg);
05.78,
3.9,
20'
(M. Paradowski,
0.034-m
Camera lens + CCD;
0.7° tail in p.a. 44 deg);
05.78,
3.8,
10'
(M. Paradowski,
7x50
Binoculars);
05.78,
3.9,
20'
(M. Paradowski,
0.034-m
Camera lens + CCD;
0.28° tail in p.a. 57 deg);
05.78,
4.0,
20'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.9° tail in p.a. 40 deg);
05.77,
4.2,
5'
(P. Guzik,
10x42.0
Binoculars;
2° tail in p.a. 45 deg);
05.76,
4.4,
7'
(V. Gonano,
Udine, Italy,
10x50
Binoculars;
1° tail in p.a. 50 deg);
05.72,
4.3,
4'
(A. Tsvetkov,
Zavolzhye,
0.05-m
Monocular 1x);
05.46,
3.9,
3'
(J. Pile,
San Rafael, Bulacan, Philippines,
Naked eye);
05.46,
3.9,
7'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
1° tail in p.a. 45 deg);
05.46,
4.0,
5.8'
(K. Yoshimoto,
0.04-m
Refractor + CCD;
40'
tail in p.a. 60 deg);
05.12,
4.4,
7'
(C. Hergenrother,
10x50
Binoculars;
0.5° tail in p.a. 50 deg);
05.08,
7.5,
--
(B. Young,
Tulsa OK USA,
8x40
Binoculars);
04.81,
5.8,
14.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
29'
tail in p.a. 47 deg);
04.81,
4.1,
--
(M. Meyer,
10x50
Binoculars);
04.78,
4.6,
10.7'
(P. Gajdos,
Prešov,
0.01-m
Camera lens + CCD;
0.47° tail in p.a. 57 deg);
04.78,
4.0,
20'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.9° tail in p.a. 45 deg);
04.78,
4.0,
20'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.9° tail in p.a. 45 deg);
04.77,
3.8,
10'
(M. Paradowski,
7x50
Binoculars);
04.77,
3.9,
5'
(P. Guzik,
10x42.0
Binoculars;
2.5° tail in p.a. 45 deg);
04.77,
3.8,
6'
(G. Pappa,
Pedara,Sicily,Italy,
12x50
Binoculars);
04.77,
3.9,
20'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.5° tail in p.a. 45 deg);
04.76,
4.0,
--
(G. Pappa,
Pedara,Sicily,Italy,
0.01-m
Naked eye);
04.47,
3.8,
3'
(J. Pile,
San Rafael, Bulacan, Philippines,
Naked eye);
04.46,
4.0,
7'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
0.7° tail in p.a. 43 deg);
04.11,
4.5,
--
(S. Aguirre,
Hermosillo, Sonora,
0.2-m
Schmidt-Cassegrain);
03.86,
4.3,
9.1'
(M. Mašek,
0.25-m
Schmidt-Cassegrain + CCD;
17.8'
tail in p.a. 44 deg);
03.86,
4.8,
8.5'
(M. Mašek,
0.25-m
Schmidt-Cassegrain + CCD;
18.4'
tail in p.a. 45 deg);
03.86,
4.0,
14.4'
(M. Mašek,
0.25-m
Schmidt-Cassegrain + CCD;
18.4'
tail in p.a. 45 deg);
03.85,
4.0,
5'
(B. Granslo,
Bjerke, Oslo, Norway,
10x42.0
Binoculars);
03.82,
[3.7,
6'
(M. Hamidi,
Errachidia - Morocco,
Nonex500
Binoculars;
0.6° tail in p.a. 45 deg);
03.81,
4.0,
--
(A. Russo,
Gibraltar,
15x50
Binoculars);
03.78,
4.2,
10'
(M. Paradowski,
0.034-m
Camera lens + CCD;
2° tail in p.a. 42 deg);
03.77,
4.3,
7'
(M. Paradowski,
7x50
Binoculars;
1.3° tail in p.a. 40 deg);
03.77,
3.7,
5'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD;
30'
tail);
03.77,
3.8,
4'
(G. Pappa,
Pedara, Sicily, Italy,
12x50
Binoculars);
03.77,
4.0,
5'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD;
20'
tail);
03.74,
4.0,
--
(N. Virnina,
Odessa,
0.006-m
Naked eye);
03.73,
4.0,
--
(N. Virnina,
Odessa,
0.006-m
Naked eye);
03.53,
4.8,
--
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
03.46,
4.5,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
0.3° tail in p.a. 45 deg);
02.85,
4.4,
5'
(B. Granslo,
Hakadal, Norway,
10x42.0
Binoculars;
0.6° tail in p.a. 40 deg);
02.82,
4.7,
6'
(M. Meyer,
10x50
Binoculars;
0.8° tail in p.a. 40 deg);
02.82,
4.7,
--
(A. Russo,
Gibraltar,
15x50
Binoculars);
02.81,
4.5,
31'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.59° tail in p.a. 40 deg);
02.80,
4.5,
10'
(G. Scheerle,
9x63.0
Binoculars;
0.8° tail in p.a. 45 deg);
02.78,
5.0,
8'
(T. Csorgei,
Bratislava,
0.12-m
Refractor;
50'
tail in p.a. 50 deg);
02.46,
4.8,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x);
01.86,
4.9,
8.5'
(M. Mašek,
0.25-m
Schmidt-Cassegrain + CCD;
15'
tail in p.a. 42 deg);
01.86,
5.7,
7.5'
(M. Mašek,
0.25-m
Schmidt-Cassegrain + CCD;
6.5'
tail in p.a. 44 deg);
01.86,
5.3,
8'
(M. Mašek,
0.25-m
Schmidt-Cassegrain + CCD;
14.5'
tail in p.a. 43 deg);
01.86,
4.9,
5'
(J. Gonzalez Suarez,
Sierra del Aramo, 1230 m,
10x50
Binoculars;
1.6° tail in p.a. 40 deg);
01.86,
4.5,
6'
(B. Granslo,
Hakadal, Norway,
10x42.0
Binoculars;
0.6° tail in p.a. 40 deg);
01.86,
4.9,
--
(M. Collins,
Everton,
0.05-m
"small telescopes and finders" with aperture not exceeding 4 inches);
01.86,
4.6,
6'
(P. Pérez Corujo,
Vega de San Mateo Gran Canaria,
20x80
Binoculars;
2° tail in p.a. 40 deg);
01.85,
4.6,
6'
(P. Pérez Corujo,
Vega de San Mateo Gran Canaria,
15x700
Binoculars;
2° tail in p.a. 40 deg);
01.85,
4.7,
5'
(P. Pérez Corujo,
Vega de San Mateo Gran Canaria,
7x50
Binoculars;
1.8° tail in p.a. 40 deg);
01.85,
4.8,
5'
(J. Gonzalez Suarez,
Sierra del Aramo, 1230 m,
Naked eye);
01.85,
4.9,
5'
(V. Gonano,
Udine, Italy,
10x50
Binoculars;
1.6° tail in p.a. 40 deg);
01.83,
4.8,
6'
(A. Scholten,
Eerbeek,
15x80
Binoculars;
1.2° tail in p.a. 40 deg);
01.82,
4.2,
13'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD;
1° tail in p.a. 41 deg);
01.82,
4.9,
--
(A. Russo,
Gibraltar,
15x50
Binoculars);
01.81,
4.8,
8'
(J. Navarro Pina,
San Jose de la Montaña ( Murcia , Spain ),
20x80
Binoculars;
1° tail);
01.81,
5.9,
14.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
26.1'
tail in p.a. 39 deg);
01.81,
4.8,
5'
(M. Meyer,
10x50
Binoculars);
01.81,
4.7,
--
(A. Kammerer,
Karlsruhe, Germany,
9x63.0
Binoculars;
0.7° tail in p.a. 35 deg);
01.81,
4.7,
5'
(G. Pappa,
Pedara,Sicily,Italy,
0.102-m
Maksutov);
01.80,
5.0,
5'
(G. Pappa,
Pedara,Sicily,Italy,
12x50
Binoculars);
01.78,
4.6,
5'
(P. Guzik,
10x42.0
Binoculars;
0.8° tail in p.a. 45 deg);
01.76,
4.8,
4'
(G. Pappa,
Pedara,Sicily,Italy,
0.075-m
Camera lens + CCD);
01.46,
4.7,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x);
mar
31.85,
5.1,
6'
(D. Buczynski,
Tarbatness MPC Code I81,
0.35-m
Schmidt-Cassegrain + CCD);
31.84,
4.9,
8.8'
(D. Heggie,
Edinburgh, UK,
0.05-m
Refractor + CCD;
0.9° tail in p.a. 41 deg);
31.83,
4.8,
6'
(C. Labordena,
La Serra d Engarcera,
11x80
Binoculars;
50'
tail);
31.80,
5.2,
4'
(G. Pappa,
Pedara,Sicily,Italy,
0.075-m
Camera lens + CCD);
31.70,
4.9,
--
(A. Tsvetkov,
Zavolzhye,
0.05-m
Monocular 1x);
31.46,
4.8,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
0.4° tail in p.a. 40 deg);
31.12,
4.9,
6'
(C. Hergenrother,
10x50
Binoculars);
30.84,
5.0,
4'
(J. Shanklin,
10x50
Binoculars;
30'
tail in p.a. 40 deg);
30.83,
4.7,
6'
(G. van Buitenen,
Brouwersdam,
11x70
Binoculars;
0.6° tail in p.a. 28 deg);
30.82,
4.8,
5'
(P. De Schrijver,
Beert,
15x80
Binoculars;
23'
tail in p.a. 40 deg);
30.81,
4.8,
--
(M. Deconinck,
OAB - Observatoire Astronomique de Bauduen,
10x70
Binoculars);
30.79,
4.8,
5'
(P. Guzik,
10x42.0
Binoculars;
0.4° tail in p.a. 45 deg);
30.78,
4.9,
5'
(V. Mäkelä,
Helsinki. Finland,
7x50
Binoculars);
30.78,
4.8,
5'
(S. Shurpakov,
20x110
Binoculars;
45'
tail in p.a. 44 deg);
30.46,
4.8,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
0.5° tail in p.a. 40 deg);
30.07,
7.5,
40'
(B. Young,
Tulsa OK USA,
8x40
Binoculars);
29.86,
5.2,
4'
(J. Shanklin,
10x50
Binoculars;
30'
tail in p.a. 30 deg);
29.84,
4.2,
--
(M. Collins,
Everton,
0.05-m
"small telescopes and finders" with aperture not exceeding 4 inches);
29.82,
4.7,
9'
(M. Filipek,
7x50
Binoculars);
29.81,
4.9,
7'
(J. Powichrowski,
Knyszyn,
7x50
Binoculars);
29.80,
5.0,
10'
(J. Navarro Pina,
San Jose de la Montaña ( Murcia , Spain ),
20x80
Binoculars);
29.80,
4.7,
10'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.5° tail in p.a. 40 deg);
29.79,
4.8,
7'
(M. Paradowski,
7x50
Binoculars;
1.5° tail in p.a. 40 deg);
29.46,
4.8,
5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x;
0.8° tail in p.a. 40 deg);
29.44,
4.8,
--
(K. Yoshimoto,
8x42.0
Binoculars;
1.5° tail in p.a. 40 deg);
29.43,
4.8,
6.2'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
29.42,
4.8,
7'
(S. Yoshida,
0.066-m
Refractor;
0.4° tail in p.a. 50 deg);
28.84,
4.7,
4'
(C. Harder,
Jeersdorf f,
0.252-m
Newtonian;
30'
tail in p.a. 40 deg);
28.83,
4.8,
5'
(G. van Buitenen,
Dordrecht, NL,
11x70
Binoculars;
0.3° tail in p.a. 28 deg);
28.83,
4.9,
5'
(P. De Schrijver,
Beert,
10x50
Binoculars;
30'
tail in p.a. 40 deg);
28.82,
4.8,
5'
(A. Kammerer,
Karlsruhe, Germany,
9x63.0
Binoculars;
0.7° tail in p.a. 45 deg);
28.82,
4.9,
6'
(M. Meyer,
10x50
Binoculars;
0.5° tail);
28.82,
5.0,
6'
(A. Scholten,
Eerbeek,
8x56.0
Binoculars;
0.5° tail in p.a. 45 deg);
28.82,
4.5,
20'
(M. Deconinck,
Artignosc-sur-Verdon, Provence, France,
25x120
Binoculars;
3° tail in p.a. 40 deg);
28.81,
6.2,
14.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
26.5'
tail in p.a. 39 deg);
28.80,
4.6,
--
(G. Scheerle,
0.007-m
Naked eye);
28.80,
4.6,
28'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.9° tail in p.a. 16 deg);
28.80,
4.6,
7'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain;
0.5° tail in p.a. 50 deg);
28.80,
4.6,
10'
(G. Scheerle,
9x63.0
Binoculars;
1.8° tail in p.a. 45 deg);
28.79,
4.8,
7'
(M. Paradowski,
7x50
Binoculars;
1.2° tail in p.a. 40 deg);
28.79,
4.5,
--
(W. Hasubick,
0.008-m
Naked eye);
28.79,
4.6,
4.4'
(W. Hasubick,
10x50
Binoculars);
28.78,
4.8,
6'
(V. Gonano,
Udine, Italy,
10x50
Binoculars;
0.7° tail in p.a. 40 deg);
28.78,
4.8,
10'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.4° tail in p.a. 33 deg);
28.78,
4.8,
6'
(P. Guzik,
10x42.0
Binoculars;
1.6° tail in p.a. 40 deg);
28.78,
4.8,
10'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.4° tail in p.a. 33 deg);
28.77,
4.8,
10'
(M. Paradowski,
0.034-m
Camera lens + CCD;
1.4° tail in p.a. 34 deg);
28.77,
4.7,
7.3'
(M. Paradowski,
0.034-m
Camera lens + CCD;
0.8° tail in p.a. 40 deg);
28.77,
5.0,
5'
(G. Pappa,
Pedara,Sicily,Italy,
0.05-m
Camera lens + CCD);
28.12,
4.9,
6'
(C. Hergenrother,
10x50
Binoculars;
0.4° tail in p.a. 40 deg);
27.83,
4.9,
5'
(J. Shanklin,
10x50
Binoculars;
20'
tail in p.a. 40 deg);
27.83,
5.0,
4'
(J. Shanklin,
8x42.0
Binoculars);
27.78,
5.0,
9'
(J. Powichrowski,
Knyszyn,
7x50
Binoculars);
27.78,
4.8,
5'
(S. Shurpakov,
0.07-m
Refractor;
30'
tail in p.a. 26 deg);
27.77,
5.0,
7.3'
(M. Paradowski,
0.034-m
Camera lens + CCD;
0.83° tail in p.a. 30 deg);
27.76,
4.8,
7'
(M. Paradowski,
7x50
Binoculars);
27.76,
4.8,
4.8'
(S. Shurpakov,
8x30
Binoculars);
27.74,
4.6,
12'
(A. Balashov,
Nizhny Novgorod,
0.042-m
Camera lens + CCD;
1.5° tail);
27.71,
5.3,
3.5'
(A. Tsvetkov,
Zavolzhye,
0.05-m
Monocular 1x);
27.65,
5.5,
7.2'
(M. Odeh,
0.127-m
Refractor + CCD;
1° tail in p.a. 31 deg);
27.42,
5.0,
7.2'
(O. Miyazaki,
7x50
Binoculars;
45'
tail in p.a. 30 deg);
27.07,
7.5,
--
(B. Young,
Tulsa OK USA,
8x40
Binoculars);
27.07,
7.5,
--
(B. Young,
Tulsa OK USA,
8x40
Binoculars);
26.86,
5.6,
6.6'
(D. Buczynski,
Tarbatness MPC Code I81,
0.35-m
Schmidt-Cassegrain + CCD);
26.80,
4.7,
--
(W. Hasubick,
0.008-m
Naked eye);
26.80,
4.9,
6'
(M. Meyer,
10x50
Binoculars);
26.80,
5.0,
7'
(J. Powichrowski,
Knyszyn,
7x50
Binoculars);
26.79,
4.1,
12'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
26.78,
4.7,
2.9'
(W. Hasubick,
10x50
Binoculars);
26.77,
4.9,
7.3'
(M. Paradowski,
0.034-m
Camera lens + CCD;
0.6° tail in p.a. 34 deg);
26.77,
4.7,
7.3'
(M. Paradowski,
0.034-m
Camera lens + CCD);
26.76,
4.8,
7'
(M. Paradowski,
7x50
Binoculars);
26.75,
5.0,
5'
(S. Shurpakov,
0.07-m
Refractor);
26.75,
5.0,
5'
(S. Shurpakov,
8x30
Binoculars);
26.47,
4.8,
7'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.05-m
Monocular 1x);
25.83,
4.5,
5'
(U. Pilz,
8x25.0
Binoculars;
0.25° tail in p.a. 27 deg);
25.83,
5.2,
3.8'
(V. Kasten,
15x50
Binoculars);
25.83,
5.0,
6'
(C. Harder,
Jeersdorf f,
0.1-m
Newtonian;
55'
tail in p.a. 45 deg);
25.82,
5.2,
4'
(A. Kammerer,
Karlsruhe, Germany,
9x63.0
Binoculars);
25.81,
5.1,
18'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1° tail in p.a. 9 deg);
25.80,
5.0,
7'
(A. Scholten,
Bussloo,
15x80
Binoculars);
25.80,
5.1,
18'
(T. Lehmann,
Weimar,
0.279-m
Newtonian + CCD;
1.1° tail in p.a. 10 deg);
25.79,
4.6,
8'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain;
0.4° tail in p.a. 40 deg);
25.79,
4.6,
--
(G. Scheerle,
0.007-m
Naked eye);
25.79,
4.9,
5'
(M. Meyer,
10x50
Binoculars;
0.3° tail in p.a. 35 deg);
25.79,
4.6,
11'
(G. Scheerle,
9x63.0
Binoculars;
1.4° tail in p.a. 30 deg);
25.78,
5.3,
7'
(T. Csorgei,
Bratislava, SK,
0.12-m
Refractor;
15'
tail in p.a. 35 deg);
25.78,
5.0,
5'
(S. Shurpakov,
0.07-m
Refractor);
25.78,
4.9,
--
(W. Hasubick,
10x50
Binoculars);
13P/Olbers
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
17.44,
9.8,
2.9'
(O. Miyazaki,
0.32-m
Newtonian);
14.80,
9.9,
2.5'
(J. Powichrowski,
Knyszyn,
0.35-m
Newtonian);
14.48,
9.7,
2'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
13.86,
10.3,
3'
(C. Labordena,
Culla,
0.2-m
Schmidt-Cassegrain);
12.86,
9.2,
3'
(J. Gonzalez Suarez,
Collada de Aralla, 1500 m, Leon,
20x80
Binoculars);
12.80,
10.5,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
12.49,
10.0,
3'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
11.83,
9.8,
4.8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
11.37,
9.8,
5.1'
(C. Wyatt,
0.25-m
Newtonian);
10.83,
10.0,
2.7'
(C. Harder,
Jeersdorf f,
0.531-m
Newtonian);
10.83,
9.4,
3.5'
(M. Meyer,
0.152-m
Refractor);
10.81,
9.9,
1'
(U. Pilz,
0.32-m
Newtonian);
10.44,
10.3,
1.7'
(O. Miyazaki,
0.32-m
Newtonian);
09.85,
10.4,
3'
(C. Labordena,
La Serra d Engarcera,
0.2-m
Schmidt-Cassegrain);
08.89,
9.5,
3'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
08.87,
9.8,
5.5'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
07.79,
9.7,
3'
(P. Guzik,
25x100
Binoculars);
07.78,
10.3,
1.5'
(M. Kwinta,
0.3-m
Newtonian);
07.39,
10.1,
4'
(M. Mattiazzo,
Swan Hill, Victoria, Australia,
0.07-m
Camera lens + CCD);
06.78,
10.3,
1.5'
(M. Kwinta,
0.3-m
Newtonian);
05.79,
9.9,
3'
(P. Guzik,
25x100
Binoculars);
05.76,
10.2,
3'
(A. Balashov,
Nizhny Novgorod,
0.042-m
Camera lens + CCD);
05.50,
[10.8,
1'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
04.79,
10.0,
3'
(P. Guzik,
25x100
Binoculars);
04.40,
10.2,
4'
(M. Mattiazzo,
Swan Hill, Victoria, Australia,
0.07-m
Camera lens + CCD);
03.10,
10.4,
1.3'
(D. Zubenel,
De Soto, Kansas.,
0.318-m
Newtonian);
02.44,
10.4,
2.8'
(O. Miyazaki,
0.32-m
Newtonian);
02.14,
10.5,
4.5'
(K. Yoshimoto,
0.431-m
Newtonian + CCD;
5'
tail in p.a. 100 deg);
01.77,
10.5,
1'
(G. Pappa,
Pedara,Sicily,Italy,
0.3-m
Camera lens + CCD);
mar
30.80,
10.0,
3'
(P. Guzik,
25x100
Binoculars);
29.80,
10.2,
3.3'
(M. Paradowski,
0.034-m
Camera lens + CCD);
29.44,
10.4,
2.9'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
29.41,
10.4,
4'
(M. Mattiazzo,
Swan Hill, Victoria, Australia,
0.07-m
Camera lens + CCD);
28.82,
10.1,
9.8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
28.80,
10.7,
2'
(M. Meyer,
0.254-m
Newtonian);
28.78,
10.4,
2'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
28.41,
10.5,
4'
(M. Mattiazzo,
Swan Hill, Victoria, Australia,
0.07-m
Camera lens + CCD);
27.43,
11.1,
2.9'
(O. Miyazaki,
0.32-m
Newtonian);
29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
14.87,
13.2,
2.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
13.87,
13.2,
2.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
12.88,
15.6,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
11.99,
13.2,
2.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
11.94,
12.1,
8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
10.95,
12.8,
1.2'
(W. Kutschera,
0.508-m
Newtonian);
10.88,
13.5,
3.7'
(M. Lošťák,
0.2-m
Newtonian + CCD);
10.85,
13.2,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
10.84,
11.9,
8.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
10.39,
14.1,
0.8'
(C. Wyatt,
0.4-m
Newtonian);
09.91,
12.8,
5.1'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
08.99,
12.7,
3.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
07.41,
14.0,
1.2'
(C. Wyatt,
0.4-m
Newtonian);
06.90,
12.7,
4.4'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
04.41,
13.3,
2'
(M. Mattiazzo,
Swan Hill, Victoria, Australia,
0.07-m
Camera lens + CCD);
03.92,
11.9,
5.5'
(P. Dekelver,
0.3-m
Newtonian + CCD);
02.88,
12.1,
8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
01.89,
13.0,
2.1'
(D. Heggie,
ASERO, Trevinca, Spain,
0.303-m
Newtonian + CCD);
mar
31.88,
11.8,
9.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
30.87,
14.1,
0.6'
(D. Heggie,
Aldclune, Perthshire, UK,
0.05-m
Refractor + CCD);
29.82,
13.2,
1.13'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
28.91,
12.9,
4.6'
(M. Lošťák,
0.2-m
Newtonian + CCD);
28.85,
12.3,
5.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
28.85,
11.6,
1.5'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
28.84,
12.8,
2.6'
(P. Dekelver,
0.3-m
Newtonian + CCD);
27.95,
13.2,
3.01'
(K. Hills,
0.5-m
Newtonian + CCD);
25.89,
12.8,
2.2'
(P. Dekelver,
0.3-m
Newtonian + CCD);
32P/Comas Sola
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
11.86,
14.1,
1.8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
1.3'
tail in p.a. 87 deg);
08.93,
15.2,
0.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
37P/Forbes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
01.07,
18.4,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
62P/Tsuchinshan
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
16.72,
13.4,
2.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
14.55,
13.4,
2.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
12.84,
15.7,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
11.99,
11.8,
5.3'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
11.52,
13.3,
2.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.98,
12.5,
5.5'
(M. Lošťák,
0.2-m
Newtonian + CCD);
10.92,
12.5,
3.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
7.9'
tail in p.a. 294 deg);
10.51,
13.1,
2.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.43,
11.4,
4.3'
(C. Wyatt,
0.4-m
Newtonian);
09.59,
12.2,
3.5'
(O. Miyazaki,
0.32-m
Newtonian);
09.54,
13.5,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
09.01,
11.9,
5.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
08.54,
12.8,
2.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.54,
12.8,
2.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.48,
11.4,
5'
(C. Wyatt,
0.4-m
Newtonian);
06.94,
11.8,
6.4'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
06.54,
13.4,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.54,
13.2,
2.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
04.57,
12.2,
5'
(M. Mattiazzo,
Swan Hill, Victoria, Australia,
0.07-m
Camera lens + CCD);
04.53,
13.2,
2.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
03.53,
12.9,
2.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
02.88,
[10.9,
2'
(M. Biely,
Czech Republic, Brno,
20x80
Binoculars);
02.54,
13.5,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
01.57,
12.6,
1.5'
(O. Miyazaki,
0.32-m
Newtonian);
01.51,
12.7,
1.7'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
01.04,
11.4,
6.77'
(K. Hills,
0.5-m
Newtonian + CCD);
01.02,
11.9,
7'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD;
27'
tail in p.a. 293 deg);
mar
31.97,
10.5,
15'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.28° tail in p.a. 291 deg);
30.55,
13.1,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
28.98,
10.9,
9.4'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.17° tail in p.a. 291 deg);
28.90,
10.4,
6'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
28.89,
12.0,
3.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
10.7'
tail in p.a. 294 deg);
28.55,
12.1,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.55,
13.2,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
65P/Gunn
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
13.59,
16.6,
0.4'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
0.4'
tail in p.a. 290 deg);
12.86,
17.7,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
11.01,
17.2,
0.6'
(M. Lošťák,
0.2-m
Newtonian + CCD);
10.93,
15.8,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
09.03,
16.8,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
06.98,
16.4,
0.7'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
01.11,
17.0,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
103P/Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
mar
27.97,
18.1,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
144P/Kushida
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
22.51,
12.4,
2.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
21.51,
12.1,
2.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
20.85,
15.1,
0.62'
(S. Shurpakov,
0.41-m
Newtonian);
20.47,
13.3,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
19.47,
12.0,
2'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
18.85,
13.0,
1.5'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD);
18.47,
12.0,
2.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
13.50,
12.9,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
12.83,
14.3,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
11.90,
10.8,
12'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
11.48,
12.7,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
11.45,
11.5,
2.6'
(C. Wyatt,
0.25-m
Newtonian);
10.93,
10.7,
3.3'
(W. Kutschera,
0.25-m
Newtonian);
10.86,
11.5,
7'
(M. Lošťák,
0.2-m
Newtonian + CCD);
10.84,
10.9,
3.8'
(C. Harder,
Jeersdorf f,
0.531-m
Newtonian);
10.82,
11.1,
2'
(U. Pilz,
0.32-m
Newtonian);
10.51,
11.7,
2.5'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
10.48,
12.9,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.36,
11.5,
2.7'
(C. Wyatt,
0.4-m
Newtonian);
09.83,
15.3,
0.53'
(S. Shurpakov,
0.41-m
Newtonian);
09.57,
11.4,
2.4'
(O. Miyazaki,
0.32-m
Newtonian);
09.50,
12.6,
2.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
08.95,
11.5,
4.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
08.50,
12.6,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.46,
11.8,
3.2'
(C. Wyatt,
0.4-m
Newtonian);
06.86,
10.6,
9.5'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
06.49,
13.1,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.49,
12.5,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
04.80,
11.2,
4'
(P. Guzik,
25x100
Binoculars);
04.50,
12.9,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
03.50,
12.5,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
02.88,
[10.4,
3'
(M. Biely,
Czech Republic, Brno,
20x80
Binoculars);
02.50,
12.8,
1.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
02.46,
11.4,
1.3'
(O. Miyazaki,
0.32-m
Newtonian);
01.83,
10.8,
3'
(M. Meyer,
0.152-m
Newtonian);
01.55,
12.2,
1.1'
(O. Miyazaki,
0.32-m
Newtonian);
mar
31.96,
11.8,
4'
(J. Chambó Bris,
Valles, Valencia, Spain,
0.2-m
Newtonian + CCD);
31.49,
12.9,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
30.81,
11.0,
3'
(P. Guzik,
25x100
Binoculars);
30.49,
12.1,
2.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
29.85,
15.2,
0.38'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD);
29.50,
12.6,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
29.41,
11.4,
4'
(M. Mattiazzo,
Swan Hill, Victoria, Australia,
0.07-m
Camera lens + CCD);
28.89,
10.3,
12'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
28.85,
11.7,
4.6'
(M. Lošťák,
0.2-m
Newtonian + CCD);
28.83,
10.4,
3.2'
(C. Harder,
Jeersdorf f,
0.252-m
Newtonian);
28.82,
10.0,
8'
(G. Scheerle,
0.235-m
Schmidt-Cassegrain);
28.81,
10.9,
2.5'
(M. Meyer,
0.254-m
Newtonian);
28.50,
12.6,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.50,
11.9,
2.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.45,
11.5,
2.7'
(O. Miyazaki,
0.32-m
Newtonian);
26.82,
10.3,
10'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
207P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
16.47,
16.7,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
14.49,
16.3,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
13.48,
16.0,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
11.48,
16.0,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.90,
15.7,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
10.53,
15.6,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.52,
15.8,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.51,
15.7,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
03.48,
15.1,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
02.48,
15.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
mar
31.50,
15.8,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
31.42,
15.2,
1'
(M. Mattiazzo,
Swan Hill, Victoria,
0.28-m
Schmidt reflector + CCD);
30.48,
15.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
28.55,
16.1,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.55,
15.5,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
216P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
01.06,
18.7,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
227P/Catalina-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
10.94,
16.3,
0.7'
(M. Lošťák,
0.2-m
Newtonian + CCD);
10.88,
15.7,
1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.4'
tail in p.a. 133 deg);
02.94,
15.6,
1.1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
1'
tail in p.a. 114 deg);
mar
29.03,
15.4,
1.1'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.5'
tail in p.a. 127 deg);
26.86,
15.3,
1.3'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
1.3'
tail in p.a. 122 deg);
362P
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
18.77,
17.5,
0.3'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD);
479P/Elenin
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
22.47,
13.9,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
21.53,
13.0,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
20.50,
14.2,
0.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
19.50,
13.9,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
18.49,
13.5,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
17.49,
13.9,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
16.58,
14.0,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
14.51,
14.0,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
13.50,
13.6,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
12.88,
16.5,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
11.49,
14.0,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.52,
14.0,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.40,
11.3,
2.3'
(C. Wyatt,
0.4-m
Newtonian);
09.51,
14.6,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
08.51,
14.3,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.50,
14.4,
1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
06.49,
14.9,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.53,
14.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
04.51,
15.1,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
03.50,
14.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
02.50,
14.3,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
mar
31.49,
14.2,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
30.50,
14.3,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
28.57,
14.7,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.57,
15.1,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
12.80,
16.6,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
10.37,
14.1,
1.5'
(C. Wyatt,
0.4-m
Newtonian);
08.89,
14.1,
1.1'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
07.40,
14.2,
0.6'
(C. Wyatt,
0.4-m
Newtonian);
02.84,
14.0,
1.8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.9'
tail in p.a. 139 deg);
mar
31.48,
14.7,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
30.82,
14.6,
0.23'
(J. Vincent,
South Woodham Ferrers UK,
0.305-m
Newtonian + CCD);
30.49,
14.6,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
29.49,
13.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
28.49,
14.6,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.49,
14.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
16.13,
15.9,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
12.05,
16.3,
0.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
21.52,
14.8,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
20.47,
14.4,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
19.48,
14.5,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
18.48,
14.1,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
17.48,
14.7,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
16.48,
14.5,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
15.57,
14.9,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
14.50,
14.9,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
13.52,
14.7,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
11.49,
14.8,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.49,
14.7,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.43,
14.7,
0.6'
(C. Wyatt,
0.4-m
Newtonian);
09.48,
14.7,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
08.49,
14.6,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.50,
14.7,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.44,
14.4,
0.6'
(C. Wyatt,
0.4-m
Newtonian);
06.50,
14.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.49,
14.7,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
04.48,
14.7,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
03.51,
14.9,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
02.51,
14.2,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
mar
31.49,
14.6,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
30.50,
14.3,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
29.50,
14.7,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
28.49,
14.8,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.50,
14.6,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
C/2020 F2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
01.14,
18.5,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
21.52,
15.4,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
20.47,
15.6,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
19.47,
15.6,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
18.47,
15.3,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
17.47,
15.6,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
16.47,
15.2,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
14.49,
15.3,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 193 deg);
13.49,
15.3,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
11.48,
15.3,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.9'
tail in p.a. 190 deg);
10.48,
15.4,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.7'
tail in p.a. 191 deg);
10.41,
15.1,
0.5'
(C. Wyatt,
0.4-m
Newtonian);
09.48,
15.4,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 193 deg);
08.48,
15.5,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.49,
15.3,
0.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.5'
tail in p.a. 198 deg);
07.44,
15.1,
0.3'
(C. Wyatt,
0.4-m
Newtonian);
06.48,
15.5,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.48,
15.0,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
0.9'
tail in p.a. 195 deg);
03.49,
15.2,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 194 deg);
02.49,
15.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
mar
30.49,
15.4,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
29.48,
15.3,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
28.48,
15.2,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.49,
15.4,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
21.68,
13.6,
1.1'
(A. Pearce,
0.05-m
Refractor + CCD);
21.54,
13.7,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.5'
tail in p.a. 267 deg);
20.68,
13.8,
0.8'
(A. Pearce,
0.05-m
Refractor + CCD);
20.49,
14.0,
1.2'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
19.49,
13.7,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2.1'
tail in p.a. 256 deg);
18.49,
13.6,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 256 deg);
17.68,
13.8,
1.1'
(A. Pearce,
0.05-m
Refractor + CCD);
17.51,
13.7,
1.2'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
16.69,
13.7,
1.1'
(A. Pearce,
0.05-m
Refractor + CCD);
16.49,
13.7,
1.2'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2'
tail in p.a. 254 deg);
15.69,
14.0,
1.1'
(A. Pearce,
0.05-m
Refractor + CCD);
14.69,
13.9,
1.1'
(A. Pearce,
0.05-m
Refractor + CCD);
14.52,
13.8,
1.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.7'
tail in p.a. 251 deg);
13.54,
13.8,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
0.9'
tail in p.a. 251 deg);
12.01,
13.9,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
11.50,
13.9,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 258 deg);
10.50,
13.9,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
3.7'
tail in p.a. 260 deg);
10.41,
13.9,
0.9'
(C. Wyatt,
0.4-m
Newtonian);
09.48,
13.8,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
08.50,
14.0,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.52,
13.9,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2.2'
tail in p.a. 262 deg);
07.45,
13.7,
0.6'
(C. Wyatt,
0.4-m
Newtonian);
06.50,
13.9,
0.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.51,
13.7,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.3'
tail in p.a. 255 deg);
04.50,
13.8,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
03.52,
13.7,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.1'
tail in p.a. 255 deg);
02.51,
14.0,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
mar
31.51,
14.3,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
30.51,
14.0,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 274 deg);
28.51,
13.9,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
27.52,
13.6,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
18.81,
11.0,
1.7'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
18'
tail in p.a. 255 deg);
18.76,
11.3,
2'
(C. Wyatt,
0.25-m
Newtonian);
18.15,
10.5,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
17.75,
10.9,
1.9'
(O. Miyazaki,
0.32-m
Newtonian);
17.05,
10.6,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
17.05,
9.9,
1.8'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
16.15,
10.1,
4.5'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
15.72,
11.1,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
15.07,
10.8,
2.1'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
13.71,
11.2,
1.7'
(O. Miyazaki,
0.32-m
Newtonian);
13.04,
10.8,
1.5'
(M. Kwinta,
0.3-m
Newtonian);
12.77,
10.7,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
12.11,
10.3,
4.1'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
12.07,
10.5,
5.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.56° tail in p.a. 251 deg);
12.04,
10.8,
1.6'
(M. Kwinta,
0.3-m
Newtonian);
11.09,
10.7,
1.5'
(M. Mašek,
0.2-m
Newtonian);
10.99,
10.2,
3'
(M. Meyer,
0.152-m
Refractor);
10.76,
10.6,
1.6'
(O. Miyazaki,
0.32-m
Newtonian);
10.04,
10.6,
1.1'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
09.77,
10.4,
1.6'
(O. Miyazaki,
0.32-m
Newtonian);
09.16,
9.9,
4.1'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
09.03,
10.3,
2.5'
(E. Banach,
0.25-m
Newtonian);
07.07,
10.4,
4.9'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.46° tail in p.a. 247 deg);
07.05,
10.4,
4.5'
(M. Paradowski,
0.075-m
Refractor + CCD);
07.04,
10.5,
4.5'
(M. Paradowski,
0.075-m
Refractor + CCD);
05.87,
[10.2,
2'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
03.00,
9.8,
2'
(M. Biely,
Czech Republic, Brno,
20x80
Binoculars);
02.87,
11.6,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2.5'
tail in p.a. 250 deg);
01.74,
10.4,
2.3'
(O. Miyazaki,
0.32-m
Newtonian);
mar
31.83,
10.5,
1'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
29.09,
9.7,
9.7'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.45° tail in p.a. 243 deg);
28.99,
10.5,
2'
(A. Balashov,
Nizhny Novgorod,
0.042-m
Camera lens + CCD);
27.86,
10.7,
2.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
4.7'
tail in p.a. 244 deg);
C/2021 T4 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
13.06,
16.0,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
12.86,
17.7,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
11.08,
17.0,
0.6'
(M. Lošťák,
0.2-m
Newtonian + CCD);
10.95,
16.5,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
0.7'
tail in p.a. 127 deg);
09.05,
17.6,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
01.13,
17.6,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
22.06,
13.9,
--
(R. Ang,
0.114-m
Newtonian + CCD);
20.81,
14.0,
0.38'
(S. Shurpakov,
0.41-m
Newtonian;
0.8'
tail in p.a. 98 deg);
12.81,
15.3,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
11.81,
14.5,
0.55'
(S. Shurpakov,
0.2-m
Schmidt-Newtonian;
1.7'
tail in p.a. 120 deg);
10.86,
13.8,
0.7'
(C. Harder,
Jeersdorf f,
0.531-m
Newtonian);
10.84,
13.8,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3.7'
tail in p.a. 125 deg);
10.82,
14.8,
0.9'
(M. Lošťák,
0.2-m
Newtonian + CCD);
10.56,
13.5,
0.9'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
10.46,
13.9,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
10.38,
13.6,
0.8'
(C. Wyatt,
0.4-m
Newtonian);
09.82,
13.9,
0.24'
(S. Shurpakov,
0.41-m
Newtonian;
1.4'
tail in p.a. 117 deg);
09.56,
13.7,
0.7'
(O. Miyazaki,
0.32-m
Newtonian);
08.97,
14.1,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
08.92,
11.9,
1.5'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
03.93,
13.9,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3.7'
tail in p.a. 114 deg);
02.45,
12.5,
1.1'
(O. Miyazaki,
0.32-m
Newtonian);
01.92,
13.5,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3.7'
tail in p.a. 126 deg);
01.88,
12.5,
0.3'
(G. Pappa,
Lazio- Italy (remote control),
0.2-m
Newtonian + CCD;
1.5'
tail);
mar
31.92,
13.7,
1.8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
2.1'
tail in p.a. 125 deg);
31.92,
14.2,
0.6'
(D. Buczynski,
Tarbatness MPC Code I81,
0.35-m
Schmidt-Cassegrain + CCD);
30.86,
13.9,
--
(J. Vincent,
South Woodham Ferrers UK,
0.305-m
Newtonian + CCD);
29.87,
14.3,
0.38'
(N. Quinn,
0.28-m
Schmidt-Cassegrain + CCD;
2'
tail in p.a. 121 deg);
28.89,
14.3,
1.1'
(M. Lošťák,
0.2-m
Newtonian + CCD);
28.87,
14.3,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3.1'
tail in p.a. 126 deg);
25.93,
13.8,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
C/2022 L2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
21.54,
14.7,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
20.48,
14.4,
0.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
19.49,
14.7,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
17.51,
14.4,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
16.49,
14.3,
0.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
14.52,
14.5,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1'
tail in p.a. 60 deg);
13.54,
14.2,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 60 deg);
11.50,
14.4,
0.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
0.7'
tail in p.a. 62 deg);
10.51,
14.4,
0.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
10.42,
13.9,
0.9'
(C. Wyatt,
0.4-m
Newtonian);
09.49,
14.4,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
08.50,
14.8,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
07.46,
13.7,
1.6'
(C. Wyatt,
0.4-m
Newtonian);
06.51,
14.7,
0.7'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.52,
14.2,
1.1'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
04.50,
14.2,
0.9'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
03.53,
14.4,
0.8'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
02.51,
14.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
mar
31.51,
14.4,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
30.52,
14.8,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
29.53,
15.0,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
C/2022 T1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
09.08,
17.5,
0.4'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
C/2023 A1 (Leonard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
12.83,
10.4,
--
(T. Csorgei,
Blahová,
0.28-m
Schmidt-Cassegrain + CCD);
C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
21.70,
10.8,
1.6'
(A. Pearce,
0.05-m
Refractor + CCD;
1.4'
tail in p.a. 101 deg);
20.91,
11.6,
0.77'
(S. Shurpakov,
0.41-m
Newtonian;
1.9'
tail in p.a. 89 deg);
20.70,
10.8,
1.6'
(A. Pearce,
0.05-m
Refractor + CCD;
1.7'
tail in p.a. 93 deg);
20.56,
10.4,
1'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
20.52,
11.1,
1.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.9'
tail in p.a. 90 deg);
19.94,
10.7,
1.32'
(N. James,
0.28-m
Schmidt-Cassegrain + CCD);
19.62,
11.0,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2.4'
tail in p.a. 85 deg);
18.84,
10.4,
1.8'
(H. Kiiskinen,
0.4-m
Ritchey-Chretien + CCD;
4.1'
tail in p.a. 86 deg);
18.77,
10.5,
1'
(G. Pappa,
Namibia (remote control),
0.106-m
Refractor + CCD;
2'
tail);
18.73,
10.7,
1.5'
(C. Wyatt,
0.25-m
Newtonian;
4'
tail in p.a. 83 deg);
18.55,
10.9,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2.4'
tail in p.a. 86 deg);
18.12,
10.5,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
17.98,
10.7,
1.5'
(M. Phillips,
ASERO Trevinca Skies, Spain,
0.3-m
Newtonian + CCD;
4.9° tail in p.a. 84 deg);
17.74,
10.9,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
17.70,
10.8,
2.2'
(A. Pearce,
0.05-m
Refractor + CCD);
17.54,
10.9,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.7'
tail in p.a. 82 deg);
17.04,
10.3,
2'
(A. Scholten,
Eerbeek,
0.2-m
Newtonian);
17.02,
10.2,
1.7'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
16.91,
10.5,
1.5'
(P. Guzik,
25x100
Binoculars);
16.71,
10.9,
2.1'
(A. Pearce,
0.05-m
Refractor + CCD);
16.54,
11.2,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.9'
tail in p.a. 82 deg);
16.09,
10.6,
2.6'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
16.03,
10.5,
2.3'
(D. Buczynski,
Tarbatness MPC Code I81,
0.35-m
Schmidt-Cassegrain + CCD);
15.88,
10.8,
1.1'
(D. Heggie,
Arrifana, Portugal,
0.05-m
Refractor + CCD;
1.2'
tail in p.a. 91 deg);
15.87,
10.4,
--
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
15.71,
10.8,
2.2'
(A. Pearce,
0.05-m
Refractor + CCD);
15.71,
10.7,
0.8'
(O. Miyazaki,
0.32-m
Newtonian);
15.62,
10.4,
--
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
15.13,
10.8,
1.8'
(M. Mašek,
0.25-m
Schmidt-Cassegrain + CCD;
2'
tail in p.a. 85 deg);
15.13,
10.3,
1.8'
(M. Mašek,
0.25-m
Schmidt-Cassegrain + CCD;
2.2'
tail in p.a. 80 deg);
15.06,
10.3,
2.3'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
14.71,
11.1,
2.1'
(A. Pearce,
0.05-m
Refractor + CCD);
14.58,
10.6,
1.5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
14.58,
10.6,
1.5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
14.54,
10.9,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.7'
tail in p.a. 80 deg);
13.96,
10.7,
1.5'
(C. Labordena,
Culla,
0.2-m
Schmidt-Cassegrain);
13.89,
10.6,
2.9'
(P. Dekelver,
0.3-m
Newtonian + CCD;
4.4'
tail in p.a. 74 deg);
13.71,
11.0,
1.9'
(A. Pearce,
0.05-m
Refractor + CCD;
1.3'
tail in p.a. 77 deg);
13.70,
10.5,
--
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
13.68,
10.9,
1.3'
(O. Miyazaki,
0.32-m
Newtonian);
13.62,
10.7,
1.6'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
3'
tail in p.a. 73 deg);
13.57,
10.7,
1.5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
13.57,
10.7,
1.5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
13.55,
10.9,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2.1'
tail in p.a. 75 deg);
13.03,
10.6,
1'
(M. Kwinta,
0.3-m
Newtonian);
12.95,
10.7,
3.7'
(P. Dekelver,
0.3-m
Newtonian + CCD;
3.7'
tail in p.a. 75 deg);
12.79,
10.5,
--
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
12.78,
10.8,
1'
(O. Miyazaki,
0.32-m
Newtonian);
12.62,
10.6,
1.5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
12.62,
10.5,
1.5'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
12.52,
11.0,
1'
(M. Mattiazzo,
Swan Hill, Victoria,
0.2-m
Newtonian);
12.52,
10.9,
1.2'
(M. Mattiazzo,
Swan Hill, Victoria,
0.28-m
Schmidt reflector + CCD);
12.03,
10.7,
2.2'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
12.03,
11.0,
3.2'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.05° tail in p.a. 73 deg);
12.02,
10.8,
1'
(M. Kwinta,
0.3-m
Newtonian);
11.71,
10.6,
--
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
11.56,
11.0,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
2.3'
tail in p.a. 69 deg);
11.46,
10.8,
1.2'
(C. Wyatt,
0.25-m
Newtonian;
1.5'
tail in p.a. 68 deg);
11.19,
10.7,
2.5'
(M. Goiato,
0.22-m
Newtonian);
11.05,
10.2,
1.7'
(W. Kutschera,
0.25-m
Newtonian);
10.98,
10.5,
2.5'
(M. Meyer,
0.152-m
Refractor);
10.96,
10.8,
1.5'
(M. Mašek,
0.2-m
Newtonian);
10.90,
10.6,
1.2'
(A. Kammerer,
Voelkersbach (Black Forest), Germany,
0.397-m
Newtonian);
10.88,
10.6,
2'
(C. Harder,
Jeersdorf f,
0.531-m
Newtonian);
10.87,
10.6,
2.6'
(P. Dekelver,
0.3-m
Newtonian + CCD;
5'
tail in p.a. 66 deg);
10.78,
10.7,
1'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
10.74,
10.8,
1'
(O. Miyazaki,
0.32-m
Newtonian);
10.57,
11.1,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.9'
tail in p.a. 68 deg);
10.44,
11.0,
1'
(C. Wyatt,
0.4-m
Newtonian;
1.7'
tail in p.a. 61 deg);
10.02,
9.9,
2.1'
(M. Collins,
Everton,
0.254-m
Schmidt-Cassegrain);
10.02,
10.9,
1.7'
(D. Buczynski,
Tarbatness MPC Code I81,
0.35-m
Schmidt-Cassegrain + CCD);
09.97,
10.7,
1.4'
(A. Novichonok,
0.029-m
Refractor + CCD;
1.3'
tail in p.a. 60 deg);
09.92,
10.8,
1.5'
(P. Guzik,
25x100
Binoculars);
09.86,
10.5,
0.82'
(S. Shurpakov,
0.41-m
Newtonian;
0.8'
tail in p.a. 65 deg);
09.82,
10.7,
--
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
09.60,
10.8,
0.7'
(O. Miyazaki,
0.32-m
Newtonian);
09.56,
11.1,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD;
1.4'
tail in p.a. 66 deg);
09.33,
11.0,
1.4'
(K. Yoshimoto,
0.51-m
Newtonian + CCD;
1.8'
tail in p.a. 60 deg);
09.10,
10.8,
2.1'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
09.04,
10.8,
1'
(E. Banach,
0.25-m
Newtonian);
08.91,
10.8,
1.5'
(P. Guzik,
25x100
Binoculars);
08.90,
10.6,
1.2'
(J. Gonzalez Suarez,
0.203-m
Schmidt-Cassegrain);
08.60,
11.1,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
08.59,
10.8,
2'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
07.48,
11.1,
0.7'
(C. Wyatt,
0.4-m
Newtonian;
2'
tail in p.a. 63 deg);
07.03,
11.3,
2.7'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
07.00,
10.8,
2.2'
(M. Paradowski,
0.075-m
Refractor + CCD);
06.98,
10.8,
2.2'
(M. Paradowski,
0.075-m
Refractor + CCD);
06.98,
11.4,
--
(S. Purabiya,
Ahmedabad,
0.153-m
Ritchey-Chretien + CCD);
06.97,
10.9,
2.2'
(M. Paradowski,
0.075-m
Refractor + CCD);
06.91,
10.8,
1.5'
(P. Guzik,
25x100
Binoculars);
06.58,
11.3,
1.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
05.88,
10.9,
1.5'
(P. Guzik,
25x100
Binoculars);
05.63,
10.9,
1'
(J. Pile,
San Rafael, Bulacan, Philippines,
0.114-m
Newtonian);
05.58,
11.2,
1.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
04.86,
10.9,
1.5'
(P. Guzik,
25x100
Binoculars);
04.58,
11.4,
1.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
04.57,
11.3,
1'
(M. Mattiazzo,
Swan Hill, Victoria, Australia,
0.07-m
Camera lens + CCD);
03.95,
10.9,
3.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
03.74,
11.2,
1.1'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
03.59,
11.5,
1.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
03.08,
11.5,
2.8'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
2'
tail in p.a. 31 deg);
02.67,
11.2,
--
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
02.62,
11.4,
1.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
01.59,
11.7,
1.2'
(O. Miyazaki,
0.32-m
Newtonian);
01.59,
11.4,
1.4'
(Y. Yamaguchi,
0.076-m
Refractor + CCD);
mar
31.96,
11.2,
1.5'
(D. Buczynski,
Tarbatness MPC Code I81,
0.35-m
Schmidt-Cassegrain + CCD);
31.74,
11.2,
0.8'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
31.60,
11.5,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
31.48,
11.5,
1'
(M. Mattiazzo,
Swan Hill, Victoria,
0.28-m
Schmidt reflector + CCD);
31.17,
11.6,
--
(S. Purabiya,
Ahmedabad,
0.153-m
Ritchey-Chretien + CCD);
30.80,
11.3,
0.9'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
30.60,
11.6,
1.3'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
29.07,
11.7,
1.6'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD;
0.7'
tail in p.a. 5 deg);
28.92,
11.1,
1.8'
(P. Dekelver,
0.3-m
Newtonian + CCD);
28.83,
11.5,
0.9'
(J. Xiong,
Daocheng, China(remote,O40),
0.203-m
Newtonian + CCD);
C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
20.54,
14.9,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
19.88,
15.3,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
18.60,
15.2,
0.6'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
17.56,
15.5,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
16.57,
15.3,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
14.57,
14.8,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
13.61,
15.4,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
11.57,
15.6,
0.5'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
09.58,
15.4,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
08.60,
15.6,
0.4'
(A. Pearce,
0.35-m
Schmidt-Cassegrain + CCD);
mar
31.44,
15.0,
1'
(M. Mattiazzo,
Swan Hill, Victoria,
0.28-m
Schmidt reflector + CCD);
C/2023 H5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
10.89,
17.5,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
03.96,
17.0,
0.4'
(P. Dekelver,
0.3-m
Newtonian + CCD);
mar
28.94,
17.5,
0.6'
(S. Fritsche,
Koeditz,
0.1-m
Refractor + CCD);
C/2023 S3 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
12.09,
15.0,
1.5'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
09.14,
14.6,
1.5'
(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):
2024
mar
27.96,
17.9,
0.38'
(K. Hills,
0.5-m
Newtonian + CCD);
C/2024 C4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
apr
18.79,
16.5,
0.3'
(K. Yoshimoto,
0.203-m
Ritchey-Chretien + CCD;
0.8'
tail in p.a. 205 deg);
18.14,
16.7,
--
(G. van Buitenen,
Dordrecht, NL (G06),
0.203-m
Ritchey-Chretien + CCD);
16.17,
16.2,
0.9'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
13.11,
15.1,
0.7'
(P. Dekelver,
0.3-m
Newtonian + CCD);
12.07,
16.0,
0.8'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);
09.12,
15.0,
1.5'
(P. Carson,
PGC Observatory Z10, Fregenal de la sierra, Spain,
0.315-m
Cassegrain reflector + CCD);