Recent Comet Brightness Estimates

4P/Faye
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 18.81, 15.8, -- (G. Pappa, Namibia (remote control) ;, 0.2-m Newtonian + CCD);
    30.76, 15.1, 1.7' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 0.13 tail in p.a. 277 deg);
may 04.80, 14.6, 2.9' (T. Lehmann, 0.2-m Newtonian + CCD; 0.27 tail in p.a. 277 deg);

9P/Tempel 1
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 04.11, 13.2, 4.3' (T. Lehmann, 0.2-m Newtonian + CCD; 0.11 tail in p.a. 249 deg);
    06.74, 14.7, 0.7' (C. Wyatt, 0.4-m Newtonian);
    15.02, 14.0, 0.4' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

19P/Borrelly
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 17.83, 10.9, 7' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.09 tail in p.a. 70 deg);
    18.83, 11.4, 2' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    18.93, 11.0, 2' (W. Kutschera, 0.25-m Newtonian);
    19.83, 10.8, 1.8' (M. Kwinta, 0.3-m Newtonian);
    19.87, 10.8, 2.5' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    19.88, 11.3, 3.9' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 1.2' tail in p.a. 72 deg);
    20.84, 10.8, 2.2' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    20.90, 11.3, 3.2' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    22.47, 10.6, 1' (O. Miyazaki, Koya;, 0.32-m Newtonian);
    23.85, 11.1, 1.3' (M. Kwinta, 0.3-m Newtonian);
    23.86, 11.6, 1.2' (M. Filipek, 0.4-m Newtonian);
    23.89, 10.6, 2' (C. Harder, Wangersen f, 0.531-m Newtonian);
    24.14, 10.9, 8.1' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD);
    24.89, 11.4, 3.2' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    25.46, 10.7, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    25.82, 11.2, 6.7' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    25.91, 11.4, 2' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    26.87, 11.0, 2' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    27.87, 11.1, 1.8' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    28.87, 11.3, 5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.2' tail in p.a. 83 deg);
    28.90, 11.1, 2.9' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    28.91, 10.3, 3.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    29.84, 10.9, 2.5' (C. Labordena, La Serra d Engarcera;, 0.2-m Schmidt-Cassegrain);
    29.85, 13.3, 0.28' (S. Shurpakov, 0.41-m Newtonian + CCD; 0.9' tail in p.a. 75 deg);
    30.47, 10.9, 1.5' (O. Miyazaki, 0.32-m Newtonian);
    30.85, 11.2, 1.2' (M. Kwinta, 0.3-m Newtonian);
may 01.58, 12.2, 1.5' (J. Chambo, Mayhill, New Mexico, USA, 0.431-m Ritchey-Chretien + CCD; 4' tail in p.a. 230 deg);
    01.90, 11.3, 5.2' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    02.87, 11.3, 5.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 81 deg);
    02.88, 11.0, 2' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    03.48, 10.5, 1.8' (O. Miyazaki, 0.32-m Newtonian);
    03.88, 11.2, 2.2' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    04.48, 10.4, 2.1' (O. Miyazaki, 0.32-m Newtonian);
    04.91, 10.2, 4' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    06.89, 11.5, 4.4' (T. Lehmann, 0.279-m Newtonian + CCD);
    08.90, 11.4, 5.7' (T. Lehmann, 0.279-m Newtonian + CCD);
    10.18, 12.0, 2.7' (C. Hergenrother, Tanque Verde, Arizona, USA, 0.072-m Refractor);
    11.89, 11.6, 4.8' (S. Fritsche, 0.1-m Refractor + CCD; 2' tail in p.a. 93 deg);

22P/Kopff
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 01.16, 11.2, 8.1' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 0.13 tail in p.a. 251 deg);
    06.76, 11.8, 2.5' (C. Wyatt, 0.4-m Newtonian);
    07.29, 12.1, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    08.29, 12.1, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    09.18, 11.2, 2' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);
    09.29, 12.0, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    10.29, 12.0, 1' (J. de Souza Aguiar, 0.27-m Newtonian);

29P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 21.03, 16.1, -- (E. Stickel, Burke-Gaffney Observatory;, 0.61-m Cassegrain reflector + CCD);

45P/Honda-Mrkos-Pajdusakova
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 17.14, 7.0, 1.5' (C. Hergenrother, Tanque Verde, Arizona, USA, 30x125.0 Binoculars);

67P/Churyumov-Gerasimenko
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 17.92, 13.5, 3.5' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.08 tail in p.a. 286 deg);
    18.85, 13.6, 2' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 6.8' tail in p.a. 287 deg);
    20.88, 13.0, 1.4' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    20.94, 14.3, 1.5' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    24.17, 13.7, 3.7' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 0.34 tail in p.a. 287 deg);
    26.91, 14.6, 1.5' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    28.89, 14.2, 2.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.19 tail in p.a. 288 deg);
may 01.91, 15.4, 0.9' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    03.75, 13.9, 3.9' (T. Lehmann, 0.2-m Newtonian + CCD; 0.2 tail in p.a. 288 deg);

70P/Kojima
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 23.95, 17.9, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    28.93, 16.4, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    30.93, 17.4, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 02.92, 17.6, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    06.00, 18.0, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);

71P/Clark
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 25.88, 19.7, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 03.87, 20.5, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

73P/Schwassmann-Wachmann
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 18.80, 16.2, -- (G. Pappa, Namibia (remote control) ;, 0.2-m Newtonian + CCD);
    20.98, 17.4, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    22.17, 16.4, 1' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 2.1' tail in p.a. 118 deg);
    22.17, 16.6, 0.8' (R. Ramlow, 0.106-m Refractor + CCD; 0.5' tail in p.a. 123 deg);
    26.02, 17.4, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 02.53, 16.6, 0.4' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 0.4' tail in p.a. 120 deg);
    02.93, 15.9, 1' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.5' tail in p.a. 121 deg);
    02.94, 16.3, 0.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.9' tail in p.a. 117 deg);
    06.96, 15.9, 1' (T. Lehmann, 0.279-m Newtonian + CCD; 0.8' tail in p.a. 110 deg);
    13.83, 15.9, 0.4' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

77P/Longmore
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 14.91, 19.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

86P/Wild
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 04.00, 20.2, -- (G. Pappa, Namibia (remote control), 0.5-m Cassegrain reflector + CCD);

99P/Kowal
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 24.09, 17.2, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    27.97, 17.3, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 02.92, 17.0, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    04.25, 17.0, -- (E. Stickel, Burke-Gaffney Observatory;, 0.61-m Cassegrain reflector + CCD);

100P/Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 23.93, 19.0, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    25.02, 18.9, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 03.92, 18.5, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    05.90, 18.7, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

104P/Kowal
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 17.88, 12.5, 5.4' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    18.85, 13.8, 1.5' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    20.85, 11.6, 2.8' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    20.92, 12.9, 4.1' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    22.15, 12.5, 4.6' (R. Ramlow, 0.106-m Refractor + CCD);
    27.89, 12.5, 5.9' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    28.85, 12.7, 5.7' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.6' tail in p.a. 117 deg);
    30.87, 14.3, 1.5' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 03.41, 14.7, 0.8' (C. Wyatt, 0.4-m Newtonian);
    03.80, 12.4, 7.8' (T. Lehmann, 0.2-m Newtonian + CCD);

107P/Wilson-Harrington
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 06.15, 18.7, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);

110P/Hartley
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 24.15, 17.0, 0.9' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 0.8' tail in p.a. 309 deg);
    26.96, 18.4, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    27.93, 18.4, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);

116P/Wild
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 18.84, 13.4, 2.6' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.04 tail in p.a. 111 deg);
    18.84, 13.3, 2' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    20.39, 13.6, 1.4' (C. Wyatt, 0.4-m Newtonian);
    20.89, 13.8, 0.8' (G. Scheerle, 0.235-m Schmidt-Cassegrain);
    20.96, 13.9, 1.7' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    22.16, 13.3, 3.5' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 0.06 tail in p.a. 119 deg);
    23.90, 13.5, 0.8' (C. Harder, Wangersen f, 0.531-m Newtonian);
    24.92, 14.1, 1.5' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    26.01, 14.1, 1.5' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    27.92, 13.5, 3' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 2.1' tail in p.a. 109 deg);
    28.83, 13.6, 0.3' (W. Hasubick, 0.44-m Newtonian);
    29.92, 13.8, 0.17' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.5' tail in p.a. 110 deg);
    30.78, 13.5, 3.1' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 0.04 tail in p.a. 114 deg);
may 01.93, 14.0, 1.5' (P. Carson, Fegenal de la Sierra;, 0.03-m Cassegrain reflector + CCD);
    02.38, 13.7, 1' (C. Wyatt, 0.4-m Newtonian);
    02.90, 13.6, 0.8' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    03.43, 13.8, 1.3' (C. Wyatt, 0.4-m Newtonian);
    03.77, 13.4, 3.2' (T. Lehmann, 0.2-m Newtonian + CCD; 0.05 tail in p.a. 113 deg);
    05.97, 14.2, 0.75' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    06.48, 13.8, 1' (C. Wyatt, 0.4-m Newtonian);
    06.92, 13.6, 2.5' (T. Lehmann, 0.279-m Newtonian + CCD; 0.05 tail in p.a. 119 deg);
    13.83, 13.9, 1' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

117P/Helin-Roman-Alu
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 19.95, 13.2, 0.7' (G. Pappa, Namibia (remote control) ;, 0.2-m Newtonian + CCD);
    30.16, 15.5, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 04.09, 14.2, 1.3' (T. Lehmann, 0.2-m Newtonian + CCD; 0.12 tail in p.a. 266 deg);
    06.75, 14.9, 0.4' (C. Wyatt, 0.4-m Newtonian);
    09.22, 14.4, 0.56' (K. Hills, 0.5-m Newtonian + CCD);
    10.14, 14.6, 0.6' (P. Carson, f, 0.315-m Cassegrain reflector + CCD);

152P/Helin-Lawrence
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 03.97, 16.9, -- (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

169P/NEAT
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 22.07, 19.3, -- (A. Novichonok, 1.015-m Ritchey-Chretien + CCD);

173P/Mueller
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 26.93, 20.2, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

199P/Shoemaker
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 07.80, 19.8, -- (G. Pappa, Namibia (remote control), 0.5-m Cassegrain reflector + CCD);

237P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 07.79, 20.0, -- (G. Pappa, Namibia (remote control), 0.5-m Cassegrain reflector + CCD);

325P/Yang-Gao
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 10.99, 18.0, -- (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);
    11.98, 17.9, -- (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

337P/WISE
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 03.17, 19.8, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    11.14, 20.1, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

402P/LINEAR
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 21.05, 16.7, -- (E. Stickel, Burke-Gaffney Observatory;, 0.61-m Cassegrain reflector + CCD);

440P/Kobayashi
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 26.89, 18.3, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

C/2017 K2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 20.06, 10.9, 4.5' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.07 tail in p.a. 325 deg);
    21.08, 10.6, -- (N. Novikov, Russia, d. Enaberdino, 0.15-m Newtonian);
    23.02, 10.3, 2' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    24.01, 10.7, 1.7' (M. Kwinta, 0.3-m Newtonian);
    24.05, 10.3, 2' (C. Harder, Wangersen f, 0.531-m Newtonian);
    24.16, 10.3, 2.3' (W. Kutschera, 0.25-m Newtonian);
    24.37, 10.8, 3.5' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 0.09 tail in p.a. 326 deg);
    24.69, 10.8, 2.1' (K. Harikae, 0.15-m Newtonian + CCD);
    25.14, 10.2, 2.8' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    26.30, 10.8, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    27.29, 10.7, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    28.30, 10.7, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    29.02, 10.3, 3' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    29.02, 10.7, 1.5' (M. Kwinta, 0.3-m Newtonian);
    29.95, 10.6, 1.3' (M. Filipek, 0.25-m Newtonian);
    29.98, 10.4, 0.56' (S. Shurpakov, 0.41-m Newtonian + CCD);
    30.02, 10.6, 1.5' (M. Kwinta, 0.3-m Newtonian);
    30.12, 10.0, 5.3' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    30.27, 10.1, 3' (M. Goiato, 0.22-m Newtonian);
    30.48, 10.0, 2' (C. Hergenrother, 30x125.0 Binoculars);
may 01.01, 10.6, 1.5' (M. Kwinta, 0.3-m Newtonian);
    01.75, 10.6, 2.2' (O. Miyazaki, 0.32-m Newtonian);
    01.90, 10.4, -- (N. Novikov, Russia, d. Enaberdino;, 0.15-m Newtonian);
    02.28, 10.7, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    02.95, 10.9, 1.4' (T. Karhula, Virsbo, Sweden;, 0.12-m Refractor);
    03.07, 10.5, 5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.13 tail in p.a. 332 deg);
    03.23, 10.7, 3.2' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    03.69, 10.6, 3' (K. Harikae, 0.15-m Newtonian + CCD);
    03.75, 10.5, 1.3' (O. Miyazaki, 0.32-m Newtonian);
    03.79, 10.8, 1.7' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 3' tail in p.a. 325 deg);
    05.09, 9.6, 2.6' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    05.95, 10.4, -- (N. Novikov, Russia, d. Enaberdino;, 0.15-m Newtonian);
    06.06, 9.7, 2.5' (M. Collins, Everton, 0.254-m Schmidt-Cassegrain);
    06.11, 9.9, 5.1' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    06.14, 10.6, 2.6' (W. Kutschera, 0.25-m Newtonian);
    06.28, 10.4, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    06.70, 10.3, 2' (C. Wyatt, 0.4-m Newtonian);
    07.06, 10.4, 4.4' (T. Lehmann, 0.279-m Newtonian + CCD; 0.11 tail in p.a. 334 deg);
    07.26, 10.3, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    07.46, 10.2, 3' (C. Labordena, La Serra d Engarcera, 0.2-m Schmidt-Cassegrain);
    08.27, 10.2, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    09.03, 10.2, 8.2' (S. Fritsche, 0.1-m Refractor + CCD; 0.15 tail in p.a. 334 deg);
    09.06, 10.3, 5.8' (T. Lehmann, 0.279-m Newtonian + CCD; 0.16 tail in p.a. 335 deg);
    09.20, 10.4, 4.32' (K. Hills, 0.5-m Newtonian + CCD);
    09.28, 10.2, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    10.01, 10.1, 3.2' (M. Kwinta, 0.3-m Newtonian);
    10.12, 9.6, 9.2' (P. Carson, Fregenal de la Sierra, Spain, 0.315-m Cassegrain reflector + CCD);
    10.28, 10.1, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    12.03, 10.4, 3.57' (N. James, 0.28-m Schmidt-Cassegrain + CCD);
    13.93, 10.2, 3' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

C/2017 U7
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 27.17, 19.0, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 11.15, 18.9, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

C/2018 U1 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 01.02, 15.7, 0.9' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 1.6' tail in p.a. 16 deg);

C/2019 K7 (SMITH)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 27.20, 18.0, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 06.09, 17.5, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

C/2019 L3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 18.83, 9.8, 4' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD);
    18.85, 10.4, 1.5' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    19.82, 10.5, 1.4' (M. Kwinta, 0.3-m Newtonian);
    19.85, 10.0, 2.5' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    19.87, 10.4, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    19.88, 10.3, 1' (M. Filipek, 0.25-m Newtonian);
    19.92, 10.8, 2.3' (W. Kutschera, 0.25-m Newtonian);
    20.36, 10.5, 1.3' (C. Wyatt, 0.4-m Newtonian; 4' tail in p.a. 132 deg);
    20.85, 10.1, 2.1' (A. Kammerer, Teufelsmuehle (Black Forest), Germany, 0.203-m Schmidt-Cassegrain);
    20.87, 10.4, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    20.98, 10.4, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    21.89, 10.1, 1.9' (T. Karhula, Virsbo, Sweden;, 0.305-m Newtonian);
    21.94, 10.4, 1.5' (M. Goiato, 0.22-m Newtonian);
    21.98, 10.4, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    22.15, 9.6, 12' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 0.16 tail in p.a. 22 deg);
    22.15, 9.8, 7.1' (R. Ramlow, 0.106-m Refractor + CCD; 8' tail in p.a. 29 deg);
    22.49, 11.2, 1.6' (O. Miyazaki, Koya;, 0.32-m Newtonian);
    22.51, 11.1, 1' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    22.96, 10.4, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    23.83, 10.6, 0.5' (U. Pilz, 0.32-m Newtonian; 1.6 tail in p.a. 59 deg);
    23.83, 10.6, 1' (M. Filipek, 0.4-m Newtonian);
    23.84, 10.8, 1.1' (M. Kwinta, 0.3-m Newtonian);
    23.88, 9.8, 2.2' (C. Harder, Wangersen f, 0.531-m Newtonian);
    23.88, 10.0, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    24.90, 10.3, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    24.96, 10.5, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    25.47, 10.4, 1' (O. Miyazaki, 0.32-m Newtonian);
    25.86, 9.8, 2.5' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    25.96, 10.5, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    26.86, 10.0, 2.5' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    26.97, 10.5, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    27.84, 9.9, 9.8' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.14 tail in p.a. 26 deg);
    27.86, 10.0, 2.6' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    27.88, 10.3, 2' (A. Scholten, Eerbeek, 0.2-m Newtonian);
    27.91, 10.1, 4.7' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    27.96, 10.6, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    28.86, 10.3, 2.2' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    28.90, 9.8, 2.5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    28.97, 10.6, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    29.86, 10.2, 2.5' (C. Labordena, La Serra d Engarcera;, 0.2-m Schmidt-Cassegrain);
    29.87, 10.0, 2.4' (C. Harder, Jeersdorf, h, 0.298-m Newtonian);
    30.46, 10.3, 1.7' (O. Miyazaki, 0.32-m Newtonian);
    30.75, 9.9, 7.7' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 0.09 tail in p.a. 22 deg);
    30.84, 10.4, 1.1' (M. Kwinta, 0.3-m Newtonian);
may 01.58, 10.0, 5' (J. Chambo, Mayhill, New Mexico, USA, 0.431-m Ritchey-Chretien + CCD);
    02.37, 10.3, 1.9' (C. Wyatt, 0.4-m Newtonian);
    02.88, 10.1, 2' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    03.42, 10.6, 2' (C. Wyatt, 0.4-m Newtonian);
    03.46, 10.2, 1.4' (O. Miyazaki, 0.32-m Newtonian);
    03.48, 10.9, 1.4' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    03.74, 9.8, 9.3' (T. Lehmann, 0.2-m Newtonian + CCD; 0.08 tail in p.a. 26 deg);
    03.87, 9.9, 2.6' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    04.46, 10.1, 1.2' (O. Miyazaki, 0.32-m Newtonian);
    04.90, 9.8, 3' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    06.92, 10.3, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    07.92, 10.4, 3' (J. de Souza Aguiar, 0.27-m Newtonian);
    08.92, 10.4, 3' (J. de Souza Aguiar, 0.27-m Newtonian);

C/2019 O3
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 25.10, 17.3, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 12.21, 17.4, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

C/2019 T4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 18.84, 11.6, 1' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    18.85, 12.1, 0.7' (W. Hasubick, 0.44-m Newtonian);
    19.50, 12.2, 1.3' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD; 6' tail in p.a. 235 deg);
    19.88, 11.7, 1.3' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    20.37, 11.6, 1.2' (C. Wyatt, 0.4-m Newtonian);
    20.99, 11.7, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    21.99, 11.7, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    22.00, 11.6, 1' (M. Goiato, 0.22-m Newtonian);
    22.54, 13.0, 0.7' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    22.99, 11.7, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    23.84, 12.3, 1' (U. Pilz, 0.32-m Newtonian);
    23.87, 11.9, 1.8' (C. Harder, Wangersen f, 0.531-m Newtonian);
    23.90, 12.2, 0.7' (M. Filipek, 0.4-m Newtonian);
    24.97, 12.0, 1.9' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    24.99, 11.8, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    25.90, 12.1, 4.6' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.08 tail in p.a. 235 deg);
    25.96, 12.1, 2' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    25.99, 11.8, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    26.88, 11.0, 1.7' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    26.98, 11.7, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    27.88, 11.1, 1.5' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    27.90, 11.6, 1' (T. Karhula, Virsbo, Sweden, 0.305-m Newtonian);
    27.99, 11.7, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    28.88, 11.9, 1.8' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    28.92, 10.6, 4' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    28.99, 11.6, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    29.88, 12.0, 1.2' (C. Harder, Jeersdorf, h, 0.298-m Newtonian);
    29.88, 11.2, 2' (C. Labordena, La Serra d Engarcera;, 0.2-m Schmidt-Cassegrain);
may 02.40, 12.3, 1.5' (C. Wyatt, 0.4-m Newtonian);
    02.85, 12.2, 2.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.05 tail in p.a. 230 deg);
    02.86, 12.1, 3.7' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.09 tail in p.a. 236 deg);
    02.89, 11.2, 2.1' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    02.93, 11.4, 2.26' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    03.44, 12.2, 2.2' (C. Wyatt, 0.4-m Newtonian);
    03.51, 12.5, 0.9' (Y. Yamaguchi, 0.076-m Refractor + CCD);
    03.89, 11.5, 2' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    04.93, 10.4, 5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    06.48, 12.3, 2.1' (C. Wyatt, 0.4-m Newtonian);
    06.95, 11.7, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    07.94, 11.9, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    08.86, 12.3, 2.6' (T. Lehmann, 0.279-m Newtonian + CCD; 0.09 tail in p.a. 232 deg);
    08.94, 11.9, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    14.87, 12.2, 0.8' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

C/2019 U5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 19.03, 13.7, -- (G. Pappa, Nerpio, Spain (remote control) ;, 0.2-m Newtonian + CCD);
    19.53, 14.5, 0.6' (K. Yoshimoto, 0.203-m Ritchey-Chretien + CCD);
    20.02, 14.3, 1.5' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.8' tail in p.a. 75 deg);
    24.37, 14.3, 1.2' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 1.2' tail in p.a. 76 deg);
    25.06, 14.3, 0.8' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    26.11, 15.4, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    28.92, 14.8, 1.3' (M. Lostak, 0.2-m Newtonian + CCD);
    28.99, 13.6, 0.5' (W. Hasubick, 0.44-m Newtonian);
    29.01, 14.2, 1.3' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 73 deg);
    29.92, 13.8, 0.8' (T. Karhula, Virsbo, Sweden;, 0.305-m Newtonian);
    30.07, 14.1, 1.1' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 01.93, 13.6, 0.25' (S. Shurpakov, 0.41-m Newtonian + CCD);
    03.02, 14.2, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.7' tail in p.a. 78 deg);
    06.07, 14.2, 0.8' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    06.08, 14.1, 0.75' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    06.51, 14.5, 0.6' (C. Wyatt, 0.4-m Newtonian);
    07.02, 14.1, 1.3' (T. Lehmann, 0.279-m Newtonian + CCD; 2.3' tail in p.a. 74 deg);
    07.89, 14.8, 0.38' (S. Shurpakov, 0.41-m Newtonian + CCD; 2.13' tail in p.a. 74 deg);
    08.96, 14.1, 1.6' (T. Lehmann, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 73 deg);
    10.08, 14.2, 0.8' (P. Carson, Fregenal de la Sierra, Spain, 0.315-m Cassegrain reflector + CCD);

C/2020 F2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 24.08, 17.5, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 03.02, 17.5, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

C/2020 H6 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 25.08, 16.4, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    26.13, 16.8, 0.38' (K. Hills, Comphot version 1.2.6;, 0.5-m Newtonian + CCD);
    28.96, 16.5, 0.9' (M. Lostak, 0.2-m Newtonian + CCD);
may 03.04, 15.9, 0.9' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 2.3' tail in p.a. 218 deg);
    03.08, 15.9, 1.1' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 0.6' tail in p.a. 244 deg);
    06.10, 16.4, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    07.04, 15.8, 1' (T. Lehmann, 0.279-m Newtonian + CCD; 0.06 tail in p.a. 217 deg);
    07.90, 16.1, 0.24' (S. Shurpakov, 0.41-m Newtonian + CCD; 1.2' tail in p.a. 227 deg);
    08.99, 15.8, 1' (T. Lehmann, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 216 deg);

C/2020 J1 (SONEAR)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 17.82, 15.1, -- (G. Pappa, Namibia (remote control) ;, 0.2-m Newtonian + CCD);
    25.04, 15.1, 0.9' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    25.99, 15.4, 0.75' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    28.98, 14.9, 1.5' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.11 tail in p.a. 139 deg);
    30.05, 15.9, 0.6' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 03.07, 15.8, 0.56' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    06.04, 15.8, 0.6' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    06.99, 15.2, 1.2' (T. Lehmann, 0.279-m Newtonian + CCD; 2.1' tail in p.a. 130 deg);
    08.99, 14.8, 1.5' (S. Fritsche, 0.1-m Refractor + CCD; 1.1' tail in p.a. 119 deg);
    13.84, 15.1, 0.3' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

C/2020 K1 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 25.12, 15.0, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    28.05, 14.8, 1.2' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    28.99, 13.6, 0.3' (W. Hasubick, 0.44-m Newtonian);
    29.00, 15.4, 0.9' (M. Lostak, 0.2-m Newtonian + CCD);
    30.04, 14.5, 0.22' (S. Shurpakov, 0.41-m Newtonian + CCD);
    30.10, 15.0, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 06.09, 14.4, 0.6' (P. Carson, Fegenal de la Sierra;, 0.145-m Cassegrain reflector + CCD);
    06.71, 14.3, 0.3' (C. Wyatt, 0.4-m Newtonian);
    07.22, 14.5, 0.56' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    09.04, 14.4, 0.9' (T. Lehmann, 0.279-m Newtonian + CCD);

C/2020 M5 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 24.95, 15.8, 0.6' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    25.94, 16.0, 0.56' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    30.79, 15.5, 1.4' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 2.2' tail in p.a. 51 deg);
may 02.41, 15.4, 0.3' (C. Wyatt, 0.4-m Newtonian);
    02.90, 15.8, 1.2' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    03.44, 15.4, 0.3' (C. Wyatt, 0.4-m Newtonian);
    05.87, 16.5, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    13.84, 15.8, 0.3' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

C/2020 O2 (Amaral)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 27.23, 16.9, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 07.21, 17.2, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    10.10, 16.1, 0.4' (P. Carson, Fregenal de la Sierra, Spain, 0.315-m Cassegrain reflector + CCD);

C/2020 P3 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 03.13, 17.4, -- (E. Stickel, Burke-Gaffney Observatory;, 0.61-m Cassegrain reflector + CCD);

C/2020 PV6 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 24.13, 19.1, 0.38' (K. Hills, Comphot version 1.2.6;, 0.5-m Newtonian + CCD);
may 02.94, 19.6, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    03.00, 17.6, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1' tail in p.a. 83 deg);
    03.97, 19.5, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    05.95, 19.2, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

C/2020 R7 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 01.15, 14.4, 1.7' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 2.4' tail in p.a. 118 deg);
    06.73, 13.9, 0.6' (C. Wyatt, 0.4-m Newtonian);
    14.00, 13.7, 0.7' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

C/2020 V2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 18.84, 12.8, 0.6' (W. Hasubick, 0.44-m Newtonian);
    18.86, 13.5, 1.5' (H. Kiiskinen, 0.4-m Ritchey-Chretien + CCD; 0.8' tail in p.a. 127 deg);
    18.88, 13.7, 2' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 1.2' tail in p.a. 130 deg);
    19.84, 12.8, 0.9' (G. Pappa, Nerpio, Spain (remote control) ;, 0.2-m Newtonian + CCD);
    19.90, 13.5, 0.6' (C. Harder, Jeersdorf, f, 0.298-m Newtonian; 1' tail in p.a. 100 deg);
    22.19, 13.8, 1.6' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 1.8' tail in p.a. 128 deg);
    22.98, 13.3, 0.9' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    23.85, 13.8, 1.2' (U. Pilz, 0.32-m Newtonian);
    23.91, 13.7, 0.75' (K. Hills, Comphot version 1.2.6;, 0.5-m Newtonian + CCD);
    23.91, 14.1, 0.45' (C. Harder, Wangersen f, 0.531-m Newtonian; 0.5' tail in p.a. 110 deg);
    24.70, 13.6, 0.5' (K. Harikae, 0.15-m Newtonian + CCD);
    24.99, 13.8, 1' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    25.90, 13.7, 0.8' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    25.91, 13.9, 0.75' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    26.89, 13.6, 0.55' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    27.89, 13.7, 0.6' (C. Harder, Jeersdorf, f, 0.298-m Newtonian; 0.9' tail in p.a. 130 deg);
    28.01, 13.8, 2' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD; 1.4' tail in p.a. 130 deg);
    28.88, 14.4, 1.5' (M. Lostak, 0.2-m Newtonian + CCD);
    28.90, 13.7, 0.75' (C. Harder, Jeersdorf, f, 0.298-m Newtonian; 1' tail in p.a. 120 deg);
    28.96, 13.8, 1.2' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.5' tail in p.a. 127 deg);
    29.89, 13.8, 0.5' (C. Harder, Jeersdorf, h, 0.298-m Newtonian; 0.8' tail in p.a. 110 deg);
    30.03, 13.7, 0.9' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    30.38, 13.1, 0.7' (J. Chambo, Valles, Valencia, Spain, 0.2-m Newtonian + CCD; 1.2' tail in p.a. 129 deg);
may 02.90, 13.2, 0.94' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    02.91, 13.7, 0.8' (C. Harder, Jeersdorf, f, 0.298-m Newtonian; 0.8' tail in p.a. 120 deg);
    02.97, 13.7, 1.1' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 1.4' tail in p.a. 123 deg);
    03.70, 13.6, 1.2' (K. Harikae, 0.15-m Newtonian + CCD);
    03.91, 13.5, 0.7' (C. Harder, Jeersdorf, f, 0.298-m Newtonian; 1' tail in p.a. 120 deg);
    06.02, 14.0, 0.6' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    06.09, 13.7, 1.6' (W. Kutschera, 0.54-m Newtonian);
    07.00, 13.7, 1.3' (T. Lehmann, 0.279-m Newtonian + CCD; 1.6' tail in p.a. 122 deg);
    08.93, 13.7, 1.3' (T. Lehmann, 0.279-m Newtonian + CCD; 1.3' tail in p.a. 121 deg);
    08.94, 13.7, 1.6' (S. Fritsche, 0.1-m Refractor + CCD; 1' tail in p.a. 127 deg);

C/2020 Y2 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 20.37, 15.0, 0.5' (C. Wyatt, 0.4-m Newtonian);
may 02.39, 14.8, 0.5' (C. Wyatt, 0.4-m Newtonian);
    03.42, 14.8, 0.6' (C. Wyatt, 0.4-m Newtonian);
    06.47, 14.9, 0.5' (C. Wyatt, 0.4-m Newtonian);

C/2021 C5 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 25.87, 18.0, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 02.88, 18.0, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

C/2021 D2 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 27.95, 19.0, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 02.90, 18.1, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD);
    12.91, 19.6, 0.38' (K. Hills, 0.5-m Newtonian + CCD);

C/2021 E3 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 26.31, 11.7, 1' (J. de Souza Aguiar, 0.27-m Newtonian);
    27.30, 11.6, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    28.30, 11.6, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    30.31, 11.4, 1' (M. Goiato, 0.22-m Newtonian);
may 01.13, 9.7, 13' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 0.05 tail in p.a. 308 deg);
    02.29, 11.1, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    04.78, 10.0, 4' (M. Mattiazzo, Swan Hill, Victoria;, 25x100 Binoculars);
    06.29, 10.8, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    06.72, 9.8, 5.2' (C. Wyatt, 0.4-m Newtonian);
    07.02, 11.0, 5.2' (C. Hergenrother, Hakos (remote), 0.2-m Newtonian);
    07.28, 10.6, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    08.28, 10.5, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    09.16, 9.7, 15.2' (C. Hergenrother, Hakos (remote), 0.2-m Newtonian);
    09.17, 9.3, 14.8' (C. Hergenrother, Hakos (remote), 0.2-m Newtonian);
    09.29, 10.5, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    10.29, 10.4, 2' (J. de Souza Aguiar, 0.27-m Newtonian);
    11.98, 9.7, 5' (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

C/2021 O3 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 19.36, [7.6, -- (C. Wyatt, 0.25-m Newtonian);
    22.37, [9.0, -- (M. Mattiazzo, Swan Hill, Victoria, 0.07-m Camera lens + CCD);
may 03.45, [11.0, -- (K. Yoshimoto, 0.072-m Camera lens + CCD);
    08.87, 12.3, 3.9' (S. Fritsche, 0.1-m Refractor + CCD);
    08.88, 12.3, 3.3' (T. Lehmann, 0.279-m Newtonian + CCD; 0.09 tail in p.a. 125 deg);
    08.90, 13.4, 2.07' (N. James, 0.28-m Schmidt-Cassegrain + CCD);
    10.15, 12.3, 3.1' (C. Hergenrother, Tanque Verde, Arizona, USA, 0.072-m Refractor);
    11.86, 12.2, 4.3' (S. Fritsche, 0.1-m Refractor + CCD);
    13.89, 12.2, 4.3' (S. Fritsche, 0.1-m Refractor + CCD);

C/2021 P4 (ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 19.89, 13.8, 0.4' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    28.88, 10.5, 4' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    28.89, 12.1, 2.4' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    29.91, 12.9, 1' (T. Karhula, Virsbo, Sweden;, 0.305-m Newtonian);
    29.95, 14.5, 0.14' (S. Shurpakov, 0.41-m Newtonian + CCD; 0.7' tail in p.a. 7 deg);
may 03.92, 12.4, 1.5' (C. Harder, Jeersdorf, f, 0.298-m Newtonian);
    04.89, 10.3, 5' (J. Gonzalez Suarez, 0.203-m Schmidt-Cassegrain);
    06.87, 11.8, 3.7' (T. Lehmann, 0.279-m Newtonian + CCD; 0.1 tail in p.a. 348 deg);
    08.90, 11.5, 5.5' (S. Fritsche, 0.1-m Refractor + CCD; 0.06 tail in p.a. 340 deg);
    10.16, 12.6, 1.8' (C. Hergenrother, Tanque Verde, Arizona, USA, 0.072-m Refractor);

C/2021 U5 (Catalina)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 25.90, 18.1, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 02.89, 17.8, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

C/2021 X1 (Maury-Attard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 07.80, 17.3, -- (G. Pappa, Namibia (remote control), 0.5-m Cassegrain reflector + CCD);

C/2022 A2 (PANSTARRS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 25.92, 18.1, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
may 04.82, 18.1, 0.5' (T. Lehmann, 0.2-m Newtonian + CCD; 0.2' tail in p.a. 140 deg);
    05.88, 18.2, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);
    07.79, 17.7, -- (G. Pappa, Namibia (remote control), 0.5-m Cassegrain reflector + CCD);
    13.84, 17.6, -- (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);

C/2022 A3 (Lemmon-ATLAS)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 25.98, 19.8, 0.38' (K. Hills, Comphot version 1.4.4;, 0.5-m Newtonian + CCD);

C/2022 E3 (ZTF)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
apr 20.10, 16.4, 1.1' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    22.03, 15.8, 0.19' (A. Novichonok, 1.015-m Ritchey-Chretien + CCD; 19" tail in p.a. 241 deg);
    22.46, 16.1, 0.5' (T. Lehmann, PieTown (remote), 0.4-m Newtonian + CCD; 0.3' tail in p.a. 235 deg);
    25.16, 15.7, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    25.40, 15.9, 0.3' (K. Yoshimoto, 0.51-m Newtonian + CCD; 0.4' tail in p.a. 240 deg);
    28.09, 15.9, 0.8' (S. Fritsche, Koeditz, 0.1-m Refractor + CCD);
    29.07, 15.5, 0.4' (M. Lostak, 0.2-m Newtonian + CCD);
    30.02, 15.5, 0.14' (S. Shurpakov, 0.41-m Newtonian + CCD);
    30.14, 15.7, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
may 01.14, 15.7, 0.7' (T. Lehmann, Hakos (remote), 0.2-m Newtonian + CCD; 0.3' tail in p.a. 237 deg);
    03.09, 15.6, 0.6' (T. Lehmann, Weimar, 0.279-m Newtonian + CCD; 0.3' tail in p.a. 230 deg);
    06.13, 15.6, 0.4' (P. Carson, Fegenal de la Sierra;, 0.315-m Cassegrain reflector + CCD);
    07.07, 15.5, 0.6' (T. Lehmann, 0.279-m Newtonian + CCD; 0.4' tail in p.a. 231 deg);
    07.99, 15.0, 0.19' (S. Shurpakov, 0.41-m Newtonian + CCD);
    08.17, 15.7, -- (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);
    09.07, 16.0, 0.7' (S. Fritsche, 0.1-m Refractor + CCD);
    09.08, 15.5, 0.5' (T. Lehmann, 0.279-m Newtonian + CCD; 0.5' tail in p.a. 231 deg);
    11.94, 15.5, -- (A. Novichonok, 0.36-m Ritchey-Chretien; 15" tail in p.a. 239 deg);

C/2022 J1 (Maury-Attard)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 05.81, 17.7, 0.4' (K. Yoshimoto, 0.51-m Newtonian);

P/2020 WJ5 (Lemmon)
Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2022
may 03.87, 17.6, -- (G. Pappa, Namibia (remote control), 0.2-m Newtonian + CCD);