12P/Pons-Brooks
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 12.75, 11.0, 6' (A. Pearce, 0.106-m Refractor + CCD; 15.5' tail in p.a. 239 deg);
    10.73, 11.2, 7' (A. Pearce, 0.106-m Refractor + CCD; 15.4' tail in p.a. 240 deg);
    09.73, 10.8, 6' (A. Pearce, 0.106-m Refractor + CCD; 16.2' tail in p.a. 240 deg);
    08.73, 10.6, 7' (A. Pearce, 0.106-m Refractor + CCD; 18.5' tail in p.a. 242 deg);
    06.74, 10.9, 7' (A. Pearce, 0.106-m Refractor + CCD; 24.2' tail in p.a. 239 deg);
    05.75, 10.4, 7.8' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.53° tail in p.a. 240 deg);
    05.73, 10.7, 7' (A. Pearce, 0.106-m Refractor + CCD; 19.6' tail in p.a. 239 deg);
    04.73, 10.8, 7' (A. Pearce, 0.106-m Refractor + CCD; 24.3' tail in p.a. 243 deg);
    03.73, 10.6, 7' (A. Pearce, 0.106-m Refractor + CCD; 25.5' tail in p.a. 240 deg);
    02.73, 10.7, 7' (A. Pearce, 0.106-m Refractor + CCD; 20.6' tail in p.a. 244 deg);
    01.73, 10.7, 7' (A. Pearce, 0.106-m Refractor + CCD; 18.1' tail in p.a. 245 deg);
aug 31.73, 10.8, 7' (A. Pearce, 0.106-m Refractor + CCD; 23.9' tail in p.a. 247 deg);
    30.73, 10.7, 7.5' (A. Pearce, 0.106-m Refractor + CCD; 10.9' tail in p.a. 246 deg);
    29.75, 10.3, 7.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.41° tail in p.a. 244 deg);
    29.37, 10.3, 3.1' (C. Wyatt, 0.4-m Newtonian);
    21.74, 10.5, 7.5' (A. Pearce, 0.106-m Refractor + CCD; 14.8' tail in p.a. 250 deg);
    20.90, 10.3, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    19.73, 10.3, 7' (A. Pearce, 0.106-m Refractor + CCD; 10.2' tail in p.a. 246 deg);
    18.73, 10.2, 6.5' (A. Pearce, 0.106-m Refractor + CCD; 12.5' tail in p.a. 252 deg);


13P/Olbers
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 15.80, 8.7, 5' (J. Navarro Pina, Sierra de Agridulce ( Murcia ), 20x80 Binoculars);
    14.80, 8.2, 7.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.82, 8.2, 7.3' (P. Dekelver, 0.3-m Newtonian + CCD);
    12.80, 8.6, 5.3' (A. Pearce, 0.25-m Newtonian + CCD; 4.8' tail in p.a. 67 deg);
    12.77, 8.6, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 10' tail in p.a. 40 deg);
    11.81, 8.7, 3.5' (C. Harder, Jeersdorf f, 0.252-m Newtonian; 9' tail in p.a. 35 deg);
    11.77, 8.4, 5' (M. Paradowski, 0.034-m Camera lens + CCD);
    11.77, 8.4, 5' (M. Paradowski, 0.034-m Camera lens + CCD);
    11.77, 8.2, 5' (M. Paradowski, 0.034-m Camera lens + CCD);
    11.44, 8.8, 2.2' (O. Miyazaki, 0.32-m Newtonian; 4' tail in p.a. 88 deg);
    09.83, 8.7, 4.9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 5' tail in p.a. 82 deg);
    09.78, 8.1, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 0.5° tail in p.a. 50 deg);
    08.85, 7.7, 5' (J. Gonzalez Suarez, 10x50 Binoculars; 0.5° tail in p.a. 50 deg);
    08.84, 8.0, 4' (C. Labordena, La Serra d Engarcera, 11x80 Binoculars; 20' tail);
    08.84, 8.2, 5' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    08.83, 8.4, 5.9' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 9' tail in p.a. 79 deg);
    08.78, 8.3, 6.7' (M. Paradowski, 0.034-m Camera lens + CCD; 0.26° tail in p.a. 66 deg);
    08.78, 8.3, 5' (M. Paradowski, 0.034-m Camera lens + CCD; 0.34° tail in p.a. 66 deg);
    08.78, 8.2, 8.3' (M. Paradowski, 0.034-m Camera lens + CCD; 0.34° tail in p.a. 66 deg);
    08.77, 8.4, 6.7' (M. Paradowski, 0.034-m Camera lens + CCD);
    08.44, 8.5, 3.7' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    07.83, 8.4, 6.5' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 10' tail in p.a. 57 deg);
    07.81, 7.9, 11' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.56° tail in p.a. 27 deg);
    07.78, 8.8, 1.44' (S. Shurpakov, 0.41-m Newtonian + CCD);
    07.77, 8.3, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    07.40, 8.5, 5' (M. Mattiazzo, Swan Hill, Victoria, 25x100 Binoculars);
    05.88, 8.3, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 0.18° tail in p.a. 65 deg);
    05.83, 8.1, 4' (U. Pilz, 16x70 Binoculars);
    05.82, 8.7, 4' (C. Harder, Jeersdorf f, 0.531-m Newtonian; 11' tail in p.a. 30 deg);
    05.80, 8.7, 3.5' (E. Banach, 0.25-m Newtonian);
    05.79, 8.2, 5.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.37° tail in p.a. 70 deg);
    05.79, 8.2, 5.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.18° tail in p.a. 63 deg);
    05.76, 9.2, 1.44' (S. Shurpakov, 0.41-m Newtonian + CCD; 7.4' tail in p.a. 73 deg);
    04.84, 8.1, 7' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 0.4° tail in p.a. 55 deg);
    04.80, 8.5, 4' (J. Powichrowski, Knyszyn, 0.35-m Newtonian);
    04.79, 8.3, 5.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.38° tail in p.a. 61 deg);
    04.78, 8.3, 5.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.13° tail in p.a. 61 deg);
    04.43, 8.7, 3.5' (O. Miyazaki, 20x80 Binoculars; 11' tail in p.a. 75 deg);
    03.80, 8.5, 9.6' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 0.6° tail in p.a. 76 deg);
    03.79, 8.8, 1.44' (S. Shurpakov, 0.41-m Newtonian + CCD);
    03.79, 8.1, 6.6' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.32° tail in p.a. 66 deg);
    03.78, 8.1, 5.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.29° tail in p.a. 66 deg);
    03.78, [7.2, 6' (M. Biely, Czech Republic, Brno, 20x80 Binoculars);
    02.86, 8.1, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 18' tail in p.a. 56 deg);
    02.79, 8.1, 5.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.31° tail in p.a. 58 deg);
    02.78, 8.1, 5.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.31° tail in p.a. 58 deg);
    01.86, 8.1, 9.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.85, 8.0, 7' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 29' tail in p.a. 46 deg);
    01.83, 8.5, 4' (C. Harder, Jeersdorf f, 0.252-m Newtonian; 10' tail in p.a. 45 deg);
    01.82, 7.7, 13' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.56° tail in p.a. 34 deg);
    01.81, 7.7, 12' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.41° tail in p.a. 40 deg);
    01.80, 7.9, 8.8' (J. Powichrowski, Knyszyn, 0.35-m Newtonian);
aug 31.93, 8.1, 4' (M. Goiato, 20x100 Binoculars);
    31.84, 8.1, 3.5' (T. Karhula, Virsbo, Sweden, 10x50 Binoculars);
    31.83, 8.4, 4' (C. Harder, nahe Wangersen, 0.531-m Newtonian; 15' tail in p.a. 50 deg);
    31.82, 7.7, 11' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.63° tail in p.a. 26 deg);
    31.81, 8.0, 1' (M. Deconinck, Sisteron France, 0.1-m Refractor; 3' tail);
    31.81, 8.0, 7.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.52° tail in p.a. 21 deg);
    31.80, 8.5, 2.8' (J. Powichrowski, Knyszyn, 0.35-m Newtonian; 0.03° tail in p.a. 80 deg);
    30.88, , 5.5' (S. Getliffe, 0.108-m Newtonian; 0.24° tail in p.a. 74 deg);
    30.87, 8.1, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 36' tail in p.a. 70 deg);
    30.81, 7.8, 7.9' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.3° tail in p.a. 66 deg);
    30.81, 8.0, 7.9' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.6° tail in p.a. 57 deg);
    30.81, 7.8, 5.2' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.6° tail in p.a. 57 deg);
    30.80, 7.8, 7.9' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.6° tail in p.a. 59 deg);
    30.77, 8.7, 1.44' (S. Shurpakov, 0.41-m Newtonian + CCD);
    29.86, 8.3, 4.5' (S. Getliffe, 0.108-m Newtonian);
    29.85, 8.1, 8' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 1.1° tail in p.a. 73 deg);
    29.83, 8.1, 7.5' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    29.83, 7.9, 4.1' (M. Mašek, 20x80 Binoculars);
    29.83, 7.9, 9.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.64° tail in p.a. 20 deg);
    29.82, 8.5, 2.5' (E. Banach, 0.25-m Newtonian);
    29.81, 8.3, 10' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 0.7° tail in p.a. 73 deg);
    29.36, 8.3, 2.8' (C. Wyatt, 0.4-m Newtonian; 4' tail in p.a. 82 deg);
    28.86, 8.1, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 13' tail in p.a. 30 deg);
    28.85, 7.9, 9' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 0.9° tail in p.a. 71 deg);
    28.84, 8.3, 4.5' (C. Harder, Jeersdorf f, 0.252-m Newtonian; 13' tail in p.a. 25 deg);
    28.83, 7.5, 15' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.66° tail in p.a. 29 deg);
    28.81, 7.7, 10' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.21° tail in p.a. 65 deg);
    28.81, 7.3, 5.5' (W. Hasubick, 10x50 Binoculars);
    28.81, 7.7, 10' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.48° tail in p.a. 65 deg);
    28.80, 7.8, 8.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.18° tail in p.a. 65 deg);
    27.86, 7.9, 7' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 46' tail in p.a. 61 deg);
    27.85, 7.6, 4' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    27.83, 7.9, 12.8' (P. Dekelver, 0.3-m Newtonian + CCD; 21.2' tail in p.a. 66 deg);
    27.83, 7.4, 15' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.52° tail in p.a. 27 deg);
    27.82, 8.0, 5' (G. Pappa, Spain (remote control), 0.5-m Prime focus of a reflector + CCD);
    27.81, 7.6, 8.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.32° tail in p.a. 63 deg);
    27.80, 7.7, 8.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.32° tail in p.a. 63 deg);
    27.79, 7.7, 8.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.32° tail in p.a. 65 deg);
    26.85, 7.8, 8' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 1.1° tail in p.a. 59 deg);
    26.85, 7.9, 12.8' (P. Dekelver, 0.3-m Newtonian + CCD; 19.1' tail in p.a. 69 deg);
    26.84, 8.3, 4' (C. Harder, Jeersdorf f, 0.252-m Newtonian; 12' tail in p.a. 30 deg);
    26.83, 7.5, 13' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.66° tail in p.a. 28 deg);
    26.82, 8.4, 7.5' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    26.81, 7.5, 6.7' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.46° tail in p.a. 58 deg);
    26.81, 7.5, 8.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.46° tail in p.a. 59 deg);
    26.80, 7.5, 8.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.25° tail in p.a. 66 deg);
    25.86, 7.5, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars);
    25.86, 7.8, 12.8' (P. Dekelver, 0.3-m Newtonian + CCD; 20.5' tail in p.a. 68 deg);
    25.86, 7.5, 4.5' (A. Kammerer, Voelkersbach (Black Forest), Germany, 0.397-m Newtonian);
    25.86, 7.9, 7' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 1.1° tail in p.a. 69 deg);
    25.83, 7.5, 13' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.56° tail in p.a. 31 deg);
    25.81, 7.5, 10' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.25° tail in p.a. 66 deg);
    25.81, 7.5, 10' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.25° tail in p.a. 68 deg);
    25.80, 7.5, 10' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.25° tail in p.a. 68 deg);
    25.80, 7.5, 8.3' (M. Paradowski, Dabrowa, Poland, 0.034-m Camera lens + CCD; 0.25° tail in p.a. 68 deg);
    25.78, 8.0, 4' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD; 10' tail);
    24.90, , 2.5' (S. Getliffe, 0.108-m Newtonian; 0.12° tail in p.a. 78 deg);
    24.87, 7.7, 10.5' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    24.81, 7.5, 5' (G. Pappa, Pedara,Sicily,Italy, 0.3-m Camera lens + CCD);
    23.87, 6.9, 5' (J. Gonzalez Suarez, 10x50 Binoculars; 0.6° tail in p.a. 60 deg);
    23.86, 7.0, 5' (V. Gonano, Udine, Italy, 20x80 Binoculars; 0.6° tail in p.a. 69 deg);
    23.85, 7.8, 6' (G. Scheerle, 0.235-m Schmidt-Cassegrain; 0.3° tail in p.a. 90 deg);
    23.82, 8.1, 12' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 0.7° tail in p.a. 67 deg);
    23.45, 7.6, 5' (O. Miyazaki, 20x80 Binoculars);
    23.45, 7.6, 5.9' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 30' tail in p.a. 65 deg);
    22.87, 7.7, 10.7' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    21.85, 7.9, 6.1' (D. Heggie, ASERO, Trevinca, Spain, 0.303-m Newtonian + CCD; 0.4° tail in p.a. 45 deg);
    20.88, 7.5, 3.2' (S. Getliffe, 0.108-m Newtonian);
    20.84, 8.1, 6.7' (A. Pearce, 0.25-m Newtonian + CCD; 25.6' tail in p.a. 59 deg);
    20.83, 8.0, 7' (V. Gonano, Udine, Italy, 20x80 Binoculars; 26' tail in p.a. 60 deg);
    20.82, 8.2, 8' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 28.4' tail in p.a. 74 deg);
    19.85, 7.7, 7' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 50' tail in p.a. 69 deg);
    19.85, 7.1, 15' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.59° tail in p.a. 27 deg);
    18.87, 7.8, 7.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    18.83, 8.2, 6.7' (A. Pearce, 0.25-m Newtonian + CCD; 17.3' tail in p.a. 66 deg);


37P/Forbes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 01.76, 14.8, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 113 deg);
aug 31.46, 13.8, 1' (C. Wyatt, 0.4-m Newtonian);
    30.75, 14.6, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 124 deg);
    28.75, 14.7, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 124 deg);
    24.75, 15.1, 0.5' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    22.75, 15.1, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 119 deg);


43P/Wolf-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 15.11, 15.7, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.95, 17.0, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 1' tail in p.a. 255 deg);
    12.23, 17.8, 14' (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD; 2' tail in p.a. 260 deg);
    03.97, 17.7, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);
aug 27.98, 18.3, 0.14' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.89, 17.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);


49P/Arend-Rigaux
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 09.25, 17.5, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    06.12, 18.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
aug 30.11, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


50P/Arend
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 09.37, 18.9, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


54P/de Vico-Swift-NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 15.07, 17.9, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.91, 17.5, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
aug 31.10, 18.5, 0.5' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 0.8' tail in p.a. 244 deg);
    30.13, 19.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


89P/Russell
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 15.01, 16.5, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.89, 15.6, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    05.25, 17.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    04.01, 16.1, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    02.86, 15.8, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    01.80, 16.0, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
aug 31.80, 15.6, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    30.80, 15.6, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 344 deg);
    29.80, 16.1, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 327 deg);
    28.81, 15.5, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    27.88, 15.5, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 312 deg);
    26.82, 15.6, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.5' tail in p.a. 318 deg);
    25.82, 15.3, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 310 deg);
    24.93, 15.3, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.2' tail in p.a. 309 deg);


95P/Chiron
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 06.17, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
aug 30.99, 18.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


125P/Spacewatch
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
aug 30.00, 18.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    25.14, 18.2, 1' (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD; 2' tail in p.a. 263 deg);


130P/McNaught-Hughes
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 15.18, 13.8, 0.6' (W. Kutschera, 0.508-m Newtonian);
    14.93, 15.5, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 1.1' tail in p.a. 260 deg);
    08.05, 14.7, 1.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.16° tail in p.a. 251 deg);
    08.03, 15.2, 0.25' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    08.00, 16.6, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD; 10' tail in p.a. 253 deg);
    06.22, 15.7, 1.13' (K. Hills, 0.5-m Newtonian + CCD);
    06.06, 16.2, 0.33' (S. Shurpakov, 0.25-m Newtonian + CCD; 5' tail in p.a. 250 deg);
    04.05, 15.1, 1.5' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.99, 16.1, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD; 3' tail in p.a. 250 deg);
    03.14, 13.6, 0.6' (W. Kutschera, 0.508-m Newtonian);
    02.95, 15.3, 0.9' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.8' tail in p.a. 262 deg);
    02.05, 15.9, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.03, 14.3, 2.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.17° tail in p.a. 251 deg);
aug 30.96, 15.8, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 1.1' tail in p.a. 252 deg);
    30.17, 15.3, 1.69' (K. Hills, 0.5-m Newtonian + CCD);
    30.11, 14.4, 2.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 247 deg);
    28.11, 12.4, 0.8' (W. Kutschera, 0.508-m Newtonian);
    28.07, 14.3, 0.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.10, 14.4, 2.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.15° tail in p.a. 252 deg);
    26.11, 15.3, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.4' tail in p.a. 235 deg);


133P/Elst-Pizarro
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
aug 26.06, 19.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


136P/Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 06.06, 19.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


146P/Shoemaker-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.98, 15.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    10.16, 16.3, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    08.09, 15.3, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 253 deg);
    08.02, 15.9, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    05.34, 16.0, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    04.09, 15.3, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    04.07, 15.2, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    01.10, 14.9, 1.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 258 deg);
    01.06, 15.3, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
aug 31.23, 14.6, 1.69' (K. Hills, 0.5-m Newtonian + CCD);
    31.03, 16.0, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    28.10, 15.0, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.08° tail in p.a. 252 deg);
    28.04, 15.1, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    28.03, 16.0, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    26.05, 15.0, 0.4' (G. Pappa, Spain (remote control), 0.106-m Refractor + CCD; 0.7' tail);
    25.07, 14.8, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    24.06, 14.7, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);


154P/Brewington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.15, 17.0, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD; 0.5' tail in p.a. 304 deg);
    05.34, 17.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    04.15, 15.4, 1.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.07, 14.2, 2.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.04° tail in p.a. 288 deg);
aug 30.12, 15.6, 1' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    28.08, 14.1, 3.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.07° tail in p.a. 282 deg);
    25.13, 15.8, 1' (G. Pappa, Piemonte,Italy (remote control), 0.3-m Ritchey-Chretien + CCD);


190P/Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 07.96, 17.7, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    06.11, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    05.99, 18.1, 0.2' (S. Shurpakov, 0.25-m Newtonian + CCD);
    04.19, 17.9, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


192P/Shoemaker-Levy
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 04.34, 18.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


208P/McMillan
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 06.25, 18.8, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    06.16, 19.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
aug 30.08, 19.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    22.86, 19.5, 0.3' (G. Pappa, Namibia (remote control), 0.5-m Prime focus of a reflector + CCD);


229P/Gibbs
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 05.98, 19.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


237P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 05.29, 21.1, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


242P/Spahr
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 10.15, 18.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


253P/PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 15.09, 16.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.97, 17.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    13.93, 16.7, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD; 0.7' tail in p.a. 254 deg);
    06.19, 18.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
aug 30.12, 18.3, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


276P/Vorobjov
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
aug 28.08, 17.7, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);


302P/Lemmon-PANSTARRS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
aug 24.10, 17.6, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


305P/Skiff
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 06.06, 18.8, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


328P/LONEOS-Tucker
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
aug 29.01, 17.5, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 250 deg);
    28.03, 17.4, 0.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 250 deg);


338P/McNaught
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 08.11, 18.8, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    05.30, 18.9, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
aug 30.18, 19.0, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    23.02, 18.9, 0.4' (G. Pappa, Namibia (remote control), 0.5-m Prime focus of a reflector + CCD);


345P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 05.20, 19.7, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


360P/WISE
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 09.22, 20.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    05.25, 19.7, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


362P
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
aug 31.88, 17.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);


384P/Kowalski
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 09.35, 19.0, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD; 1.5" tail in p.a. 265 deg);


450P/LONEOS
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 05.38, 20.2, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


472P/NEAT-LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 08.12, 16.6, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 306 deg);


C/2014 UN271 (Bernardinelli-Bernstein)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 10.12, 15.0, 2.3' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);
aug 31.17, 18.0, 0.3' (N. Tirawat, Deep Sky Chile at Rio Hurtado Valley, Chile - MPC X07, 0.36-m Schmidt reflector + CCD; 57" tail in p.a. 227 deg);


C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.07, 16.2, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.13, 15.2, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    02.10, 15.1, 1.1' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
aug 26.12, 14.9, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);


C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.83, 15.9, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.92, 18.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    07.84, 17.0, 0.62' (S. Shurpakov, 0.41-m Newtonian + CCD);
    05.88, 16.8, 0.47' (S. Shurpakov, 0.25-m Newtonian + CCD);
    03.83, 16.0, 1' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 4' tail in p.a. 243 deg);
    01.90, 17.1, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.85, 15.7, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
aug 30.89, 17.6, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD);
    29.91, 15.8, 2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.2' tail in p.a. 239 deg);
    29.91, 18.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    29.83, 15.8, 1' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 8.5' tail in p.a. 247 deg);
    27.92, 15.6, 1.1' (P. Dekelver, 0.3-m Newtonian + CCD);
    27.90, 15.7, 1.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.16° tail in p.a. 246 deg);
    27.85, 17.8, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);
    26.88, 15.7, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    25.88, 15.9, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 5.8' tail in p.a. 244 deg);
    24.89, 17.8, 0.4' (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
sep 04.15, 15.3, 1.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.2' tail in p.a. 89 deg);


C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 10.15, 16.2, 1.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 2.4' tail in p.a. 182 deg);
    03.08, 15.9, 0.6' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
aug 30.09, 16.2, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    25.10, 15.8, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);


C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 02.86, 14.4, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    01.76, 14.2, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
aug 31.47, 14.0, 0.7' (C. Wyatt, 0.4-m Newtonian);
    30.76, 14.2, 0.9' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    29.39, 13.9, 0.6' (C. Wyatt, 0.4-m Newtonian);
    28.77, 14.1, 1' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    26.96, 14.0, 2' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.27° tail in p.a. 40 deg);
    24.79, 14.2, 0.9' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    23.97, 14.1, 0.9' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);


C/2021 G2 (Atlas)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
aug 29.37, 14.1, 0.6' (C. Wyatt, 0.4-m Newtonian);
    28.75, 14.3, 1.3' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.06° tail in p.a. 237 deg);


C/2021 S3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 13.91, 14.7, 0.94' (K. Hills, 0.5-m Newtonian + CCD);
    07.90, 13.5, 2.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.21° tail in p.a. 236 deg);
    07.88, 15.1, 0.48' (S. Shurpakov, 0.41-m Newtonian + CCD);
    05.94, 13.9, 2.07' (K. Hills, 0.5-m Newtonian + CCD);
    05.91, 14.6, 0.67' (S. Shurpakov, 0.25-m Newtonian + CCD; 1.8' tail in p.a. 193 deg);
    05.86, 13.9, 0.8' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    05.57, 13.3, 0.8' (O. Miyazaki, 0.32-m Newtonian);
    04.46, 13.3, 0.9' (O. Miyazaki, 0.32-m Newtonian);
    04.05, 14.3, -- (R. Ang, 0.114-m Newtonian + CCD);
    04.01, 14.0, 1.3' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.87, 14.9, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    02.00, 13.9, 1.7' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
aug 31.93, 13.4, 3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.06° tail in p.a. 222 deg);
    31.90, 14.2, 0.8' (C. Harder, nahe Wangersen, 0.531-m Newtonian);
    31.86, 13.5, -- (M. Deconinck, Sisteron France, 0.1-m Refractor);
    30.91, 14.6, 0.58' (S. Shurpakov, 0.41-m Newtonian + CCD);
    30.86, 13.8, 1.9' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    29.95, 13.4, 4' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.14° tail in p.a. 239 deg);
    29.92, 13.7, 2.07' (K. Hills, 0.5-m Newtonian + CCD);
    29.84, 13.7, 0.2' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    28.88, 14.1, 0.5' (T. Karhula, Virsbo, Sweden, 0.305-m Newtonian);
    28.05, 14.0, -- (R. Ang, 0.114-m Newtonian + CCD);
    27.90, 14.1, 2.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.87, 14.4, 0.53' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.86, 13.6, 2.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.22° tail in p.a. 235 deg);
    26.83, 14.1, 0.8' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    26.54, 13.3, 0.7' (O. Miyazaki, 0.32-m Newtonian);
    25.91, 14.1, 0.48' (S. Shurpakov, 0.41-m Newtonian + CCD);
    25.52, 13.4, 0.6' (O. Miyazaki, 0.32-m Newtonian);
    24.91, 13.7, 1.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    19.96, 14.6, 0.4' (D. Heggie, ASERO, Trevinca, Spain, 0.094-m Refractor + CCD; 4' tail in p.a. 220 deg);
    18.84, 14.2, 0.48' (S. Shurpakov, 0.41-m Newtonian + CCD);


C/2021 X1 (Maury-Attard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
aug 30.01, 19.2, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    27.80, 18.5, 0.14' (S. Shurpakov, 0.41-m Newtonian + CCD);


C/2022 E2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 15.20, 13.0, 1' (W. Kutschera, 0.508-m Newtonian);
    14.12, 13.2, 1.5' (P. Dekelver, 0.3-m Newtonian + CCD; 6.4' tail in p.a. 146 deg);
    10.79, 13.6, 0.3' (P. Yi, Yeongyang, 0.61-m Newtonian);
    08.05, 12.8, 1.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    08.04, 14.2, 0.53' (S. Shurpakov, 0.41-m Newtonian + CCD; 4.9' tail in p.a. 147 deg);
    04.76, 13.6, 0.8' (O. Miyazaki, 0.32-m Newtonian);
    04.11, 13.5, 0.9' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.17, 12.6, 1.3' (W. Kutschera, 0.508-m Newtonian);
aug 30.13, 13.6, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 145 deg);
    29.83, 13.4, 1' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 1.7' tail in p.a. 146 deg);
    29.10, 13.6, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 144 deg);
    27.12, 13.6, 1.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.08° tail in p.a. 143 deg);


C/2022 N2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.89, 14.7, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 1.4' tail in p.a. 249 deg);
    13.15, 14.3, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.01, 13.5, 1.5' (C. Harder, Jeersdorf f, 0.531-m Newtonian);
    07.94, 15.6, 0.48' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.8' tail in p.a. 236 deg);
    06.13, 15.2, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    05.98, 15.0, 0.53' (S. Shurpakov, 0.25-m Newtonian + CCD; 1.8' tail in p.a. 248 deg);
    04.03, 14.8, 0.8' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    03.92, 15.2, 0.38' (S. Shurpakov, 0.41-m Newtonian + CCD; 2' tail in p.a. 240 deg);
    02.04, 15.0, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.91, 14.9, 0.8' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.9' tail in p.a. 246 deg);
    01.78, 14.9, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.8' tail in p.a. 229 deg);
    01.02, 14.9, 1.3' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.05° tail in p.a. 238 deg);
aug 31.48, 14.1, 0.6' (C. Wyatt, 0.4-m Newtonian);
    30.99, 15.3, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.3' tail in p.a. 243 deg);
    30.78, 15.0, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.7' tail in p.a. 249 deg);
    30.06, 15.4, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    30.04, 15.0, 1.2' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 240 deg);
    29.84, 14.8, 0.5' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    29.79, 15.1, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.6' tail in p.a. 221 deg);
    29.40, 14.1, 0.6' (C. Wyatt, 0.4-m Newtonian);
    28.95, 15.0, 1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 242 deg);
    28.79, 14.8, 0.9' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.8' tail in p.a. 231 deg);
    28.01, 14.8, 1.1' (P. Dekelver, 0.3-m Newtonian + CCD; 1.6' tail in p.a. 249 deg);
    28.00, 15.4, 0.38' (N. Quinn, 0.28-m Schmidt-Cassegrain + CCD);
    27.93, 15.4, 0.38' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.9' tail in p.a. 246 deg);
    26.97, 14.9, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 241 deg);
    26.97, 14.8, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD; 1.1' tail in p.a. 247 deg);
    24.80, 15.0, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.8' tail in p.a. 238 deg);
    23.98, 15.1, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD; 0.3' tail in p.a. 234 deg);


C/2022 QE78 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.09, 15.7, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    10.23, 16.5, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    04.18, 16.2, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    02.12, 16.0, 0.6' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 1' tail in p.a. 248 deg);
aug 28.12, 15.6, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    28.05, 16.0, 0.14' (S. Shurpakov, 0.41-m Newtonian + CCD);


C/2022 U1 (Leonard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 12.92, 17.2, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    07.90, 18.3, 0.14' (S. Shurpakov, 0.41-m Newtonian + CCD);
    03.91, 17.1, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
aug 31.97, 17.2, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    30.94, 17.4, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    30.00, 17.6, 0.6' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    27.90, 17.2, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    27.85, 18.0, 0.6' (M. Lošťák, 0.2-m Newtonian + CCD);
    26.92, 17.2, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    25.94, 17.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD; 0.2' tail in p.a. 86 deg);
    25.88, 16.9, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    18.99, 16.9, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);


C/2022 U3 (Bok)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.14, 18.7, 0.2' (P. Dekelver, 0.3-m Newtonian + CCD);


C/2023 A3 (Tsuchinshan-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 16.40, 5.1, 1.8' (M. Mašek, 0.3-m Cassegrain reflector + CCD; 10.6' tail in p.a. 234 deg);
    16.40, 4.7, 1.8' (M. Mašek, 0.3-m Cassegrain reflector + CCD; 9.2' tail in p.a. 233 deg);
    15.81, 4.6, 5' (M. Mattiazzo, Swan Hill, Victoria, Australia, 15x70 Binoculars);
    12.41, 5.5, 1.8' (M. Mašek, 0.3-m Cassegrain reflector + CCD);


C/2023 C2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 05.80, 13.3, 2.1' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 1.1' tail in p.a. 150 deg);
    02.87, 13.8, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    01.75, 13.8, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
aug 31.47, 13.9, 0.3' (C. Wyatt, 0.4-m Newtonian);
    30.75, 13.8, 0.7' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    29.38, 13.1, 0.6' (C. Wyatt, 0.4-m Newtonian);
    28.75, 13.8, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    24.75, 13.9, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);
    22.75, 14.0, 0.8' (A. Pearce, 0.5-m Schmidt-Cassegrain + CCD);


C/2023 Q1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.95, 17.1, 0.6' (P. Dekelver, 0.3-m Newtonian + CCD);
    04.08, 17.5, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    04.06, 17.4, 0.6' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);
    01.06, 17.2, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.7' tail in p.a. 253 deg);
aug 30.08, 17.0, 0.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 1.1' tail in p.a. 258 deg);
    29.06, 17.2, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 251 deg);
    27.87, 16.1, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    27.06, 16.6, 0.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 253 deg);
    25.98, 16.7, 0.28' (S. Shurpakov, 0.41-m Newtonian + CCD);


C/2023 R1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.91, 16.9, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.00, 17.6, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    07.98, 18.3, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);
    06.04, 17.4, 0.13' (S. Shurpakov, 0.25-m Newtonian + CCD);
    03.95, 17.7, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    03.09, 17.5, 1' (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);
    01.95, 17.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
aug 31.98, 17.6, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    28.91, 17.7, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 117 deg);
    27.94, 18.4, 0.4' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.02, 17.8, 0.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    25.93, 17.4, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD);


C/2023 TD22 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 15.00, 16.6, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    13.85, 16.8, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    07.94, 16.4, 0.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 65 deg);
    01.90, 16.1, 0.9' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD);
    01.88, 16.3, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 78 deg);
aug 31.89, 16.3, 0.8' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 66 deg);
    27.99, 17.1, 0.7' (M. Lošťák, 0.2-m Newtonian + CCD);
    27.94, 16.4, 0.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.9' tail in p.a. 70 deg);
    24.53, 16.7, 0.2' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);


C/2023 V4 (Camarasa-Duszanowicz)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.82, 15.5, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
    05.78, 15.4, 0.38' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.2' tail);
    03.82, 15.8, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    01.88, 15.6, 0.6' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    01.85, 14.6, 0.7' (P. Dekelver, 0.3-m Newtonian + CCD);
aug 31.85, 14.5, 1.5' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 2.3' tail in p.a. 356 deg);
    31.85, 14.2, 2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.1° tail in p.a. 355 deg);
    30.79, 15.8, 0.29' (S. Shurpakov, 0.41-m Newtonian + CCD; 1' tail in p.a. 2 deg);
    29.87, 14.2, 1.7' (S. Fritsche, Koeditz, 0.279-m Newtonian + CCD; 0.06° tail in p.a. 1 deg);
    29.82, 14.9, 1.2' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 10.6' tail in p.a. 345 deg);
    27.85, 12.8, 2.7' (M. Paradowski, Dabrowa, Poland, 0.135-m Camera lens + CCD);
    27.84, 14.8, 1' (E. Bryssinck, 0.4-m Newtonian + CCD);
    27.84, 12.6, 2.7' (M. Paradowski, Dabrowa, Poland, 0.135-m Camera lens + CCD);
    27.83, 12.9, 2.7' (M. Paradowski, Dabrowa, Poland, 0.135-m Camera lens + CCD);
    26.86, 14.2, 1.5' (P. Dekelver, 0.3-m Newtonian + CCD; 4.6' tail in p.a. 358 deg);
    26.85, 13.8, 2.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.13° tail in p.a. 353 deg);
    26.84, 14.9, 0.3' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    25.87, 15.3, 0.4' (G. Pappa, Spain (remote control), 0.5-m Prime focus of a reflector + CCD; 3' tail);
    24.46, 14.8, 0.6' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 4' tail in p.a. 355 deg);
    22.89, 15.8, 0.4' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    18.89, 14.4, 1.1' (P. Carson, PGC Observatory Z10, Fregenal de la sierra, Spain, 0.315-m Cassegrain reflector + CCD);


C/2024 A2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 02.13, 18.7, 0.3' (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):
2024
sep 08.07, 16.1, 0.34' (S. Shurpakov, 0.41-m Newtonian + CCD);
    04.14, 14.8, 1.2' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD);


C/2024 E1 (Wierzchos)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 07.85, 19.5, 0.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
aug 31.91, 19.3, 0.4' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    26.90, 19.5, 0.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);


C/2024 G3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 09.78, 15.3, 0.6' (A. Pearce, 0.36-m Ritchey-Chretien + CCD; 0.6' tail in p.a. 134 deg);
    08.73, 15.5, 0.6' (A. Pearce, 0.36-m Ritchey-Chretien + CCD; 0.4' tail in p.a. 133 deg);
aug 26.77, 15.8, 0.5' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD; 0.7' tail in p.a. 143 deg);
    26.10, 16.2, 0.2' (K. Yoshimoto, 0.356-m Newtonian + CCD; 0.8' tail in p.a. 145 deg);


C/2024 M1 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 04.13, 17.5, 0.4' (T. Lehmann, Hakos (remote), 0.106-m Refractor + CCD);


P/2005 SB216 (LONEOS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 03.21, 19.6, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


P/2010 WK (LINEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 03.37, 18.6, -- (J. Maikner, Comet Hunter Observatory2, New Ringgold, 0.305-m Hyperboloid astro-camera + CCD);


P/2012 US27 (Siding Spring)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2024
sep 14.03, 16.3, 0.4' (P. Dekelver, 0.3-m Newtonian + CCD);
    08.22, 17.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);
    04.11, 17.3, 0.4' (J. Zakrajšek, Crni Vrh Observatory (MPC 106), 0.6-m Prime focus of a reflector + CCD; 0.9' tail in p.a. 237 deg);
aug 31.22, 17.7, 0.38' (K. Hills, 0.5-m Newtonian + CCD);