Weekly Information about Bright Comets (2022 Jan. 1: North)

Japanese version Home page	Updated on January 13, 2022
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere. Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

C/2021 A1 ( Leonard ) It brightened up to 3 mag in outburst on Dec. 14. Then several small outbursts occured repeatedly, and the comet has been fading gradually. But it is bright as 5.6 mag still now (Jan. 8, Chris Wyatt). In the Southern Hemisphere, it stays observable in the extremely low sky for a while. In the Northern Hemisphere, it is already unobservable. It will become observable again at 13 mag in late April. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 21 33.91 -35 25.8 0.832 0.617 38 6.0 18:29 ( 42, 3) Jan. 8 21 42.09 -36 11.1 1.086 0.624 34 6.6 18:34 ( 45, -1) 19P/Borrelly Now it is bright as 9.3 mag (Jan. 7, Michael Jager). It stays bright as 9-10 mag until March. In the Northern Hemisphere, it stays observable in excellent condition for a long time. In the Southern Hemisphere, it will be extremely low in February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 0 17.96 -18 12.3 1.185 1.361 77 9.2 18:29 ( 16, 36) Jan. 8 0 32.03 -13 12.2 1.196 1.340 75 9.1 18:34 ( 23, 39) 67P/Churyumov-Gerasimenko Now it is very bright as 9.5 mag (Jan. 6, Carlos Labordena). It stays observable in good condition for a long time. It locates somewhat low in the Southern Hemisphere, Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 8 59.04 28 34.4 0.481 1.418 149 9.2 2:19 ( 0, 83) Jan. 8 8 53.64 28 55.4 0.506 1.463 156 9.4 1:46 ( 0, 84) C/2019 L3 ( ATLAS ) Now it is 9.3 mag (Jan. 6, Marco Goiato). It stays bright as 10 mag until spring for a long time. It stays observable in good condition for a long time. It locates somewhat low in the Southern Hemisphere, Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 7 12.66 32 56.3 2.587 3.555 168 9.8 0:33 ( 0, 88) Jan. 8 7 5.37 31 38.0 2.581 3.555 170 9.8 23:53 ( 0, 86) 104P/Kowal 2 Brightened very rapidly. Now it is very bright as 9.9 mag (Jan. 8, Osamu Miyazaki). It is observable at 10 mag in good condition until February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 0 4.82 -5 9.0 0.682 1.083 78 10.2 18:29 ( 25, 47) Jan. 8 0 32.16 -3 22.0 0.665 1.074 78 10.0 18:34 ( 27, 48) C/2017 K2 ( PanSTARRS ) Now it is bright as 11.7 mag (Jan. 11, Osamu Miyazaki). It is expected to be observable at 5-6 mag for a long time from 2022 to 2023. In the Northern Hemisphere, it stays observable in good condition until autumn. However, it is not observable at the high light from autumn to 2023 summer. In the Southern Hemisphere, it will be observable after February. Then it will be observable in good condition at the high light. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 17 57.59 13 17.3 5.127 4.396 38 11.0 5:37 (262, 12) Jan. 8 18 3.27 12 48.4 5.049 4.333 39 10.9 5:38 (266, 16) 4P/Faye Now it is bright as 11.6 mag (Jan. 6, Carlos Labordena). It stays observable in good condition for a long time. But it will be fading gradually after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 6 34.23 7 25.2 1.012 1.976 164 11.7 23:49 ( 0, 62) Jan. 8 6 29.03 7 51.3 1.057 2.014 161 12.0 23:17 ( 0, 63) 6P/d'Arrest Now it is bright as 11.3 mag (Jan. 3, Chris Wyatt). It will be fading rapidly after this, and it will be fainter than 18 mag in March. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 23 56.32 -19 27.3 1.827 1.785 71 12.1 18:29 ( 21, 33) Jan. 8 0 13.29 -17 29.8 1.928 1.832 69 12.6 18:34 ( 26, 33) 22P/Kopff In the Northern Hemisphere, it stays extremely low until spring. In the Southern Hemisphere, it will appear in the morning sky at 11 mag in late January, then it stays observable at 11 mag until June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 16 51.28 -19 39.0 2.553 1.730 26 12.3 5:37 (299, 5) Jan. 8 17 12.48 -20 14.3 2.498 1.701 28 12.1 5:38 (300, 6) C/2019 T4 ( ATLAS ) Now it is 13.3 mag (Jan. 3, Chris Wyatt). It will brighten up to 11.5 mag in spring. It stas observable in good condition for a long time. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 12 0.91 -29 28.6 4.374 4.443 87 12.4 5:20 ( 0, 25) Jan. 8 12 3.72 -29 38.1 4.258 4.427 93 12.3 4:55 ( 0, 25) 9P/Tempel 1 Now it is 15.2 mag (Dec. 1, Ken-ichi Kadota). It will brighten up to 12 mag from winter to spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 15 37.51 -14 23.6 2.206 1.662 44 13.0 5:37 (307, 22) Jan. 8 15 57.89 -15 51.8 2.145 1.638 46 12.8 5:38 (310, 22) 29P/Schwassmann-Wachmann 1 Now it is 16.4 mag (Jan. 11, Jean-Francois Soulier). Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 4 21.85 31 0.9 5.092 5.944 147 13.3 21:38 ( 0, 86) Jan. 8 4 19.39 30 45.4 5.159 5.946 140 13.4 21:08 ( 0, 86) 57P/du Toit-Neujmin-Delporte It brightened up to 11.5 mag in outburst in October (Oct. 22, Marco Goiato). Now it is fading. It has already faded down to 14.1 mag (Jan. 1, J.-G. Bosch, F. Kugel, J. Nicolas). In the Southern Hemisphere, it is already unobservable. In the Northern Hemisphere, it stays observable until early February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 21 35.68 -13 19.3 2.470 1.854 41 13.7 18:29 ( 57, 20) Jan. 8 21 53.46 -11 55.8 2.537 1.878 39 14.0 18:34 ( 61, 18) C/2020 T2 ( Palomar ) It brightened up to 9.5 mag in early summer (June 27, Marco Goiato). Now it is fading. It has faded down to 12.7 mag in autumn (Nov. 22, Thomas Lehmann). Now it is not observable. In the Southern Hemisphere, it will appear in the morning sky at 15 mag in late February. In the Northern Hemisphere, it is not observable until June when the comet will fade down to 17 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 19 39.50 -33 19.9 3.807 2.874 15 13.9 18:29 ( 58,-13) Jan. 8 19 54.01 -33 16.8 3.873 2.928 13 14.1 18:34 ( 61,-17) C/2020 J1 ( SONEAR ) It brightened up to 12.3 mag from spring to summer (June 15, Marco Goiato). Now it is fading. It has already faded down to 14.9 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 14 28.64 4 18.4 4.374 4.109 68 14.0 5:37 (308, 47) Jan. 8 14 28.82 5 27.7 4.285 4.145 75 14.0 5:38 (316, 52) 8P/Tuttle It brightened very rapidly, and brightened up to 8.9 mag (Sept. 11, Chris Wyatt). Now it is fading. It has already faded down to 15.7 mag (Dec. 7, E. Cortes, N. Paul, B. Lutkenhoner). In the Southern Hemisphere, it stays observable after this while the comet will be fading. It is not observable after this in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 15 57.58 -53 15.7 2.622 2.027 43 14.0 5:37 (330,-10) Jan. 8 16 16.38 -53 42.1 2.659 2.099 45 14.4 5:38 (332,-10) C/2020 Y2 ( ATLAS ) Now it is 15.1 mag (Dec. 14, Chris Wyatt). It will brighten up to 13 mag in spring. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 12 45.78 -52 52.6 3.706 3.522 71 14.3 5:37 (356, 2) Jan. 8 12 41.14 -55 29.0 3.590 3.493 76 14.2 5:32 ( 0, -1) 116P/Wild 4 Now it is 15.2 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). It will brighten rapidly, and it will be observable at 13.5 mag in good condition from winter to spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 10 9.18 16 30.8 1.810 2.571 131 15.0 3:28 ( 0, 71) Jan. 8 10 9.05 16 39.9 1.725 2.548 138 14.8 3:01 ( 0, 72) C/2020 V2 ( ZTF ) Now it is 13.8 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 10 mag in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 autumn. In the Southern Hemipshere, it locates extremely low from January to February. Then it stays unobservable until 2023 summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 13 6.72 41 21.7 5.221 5.495 101 15.0 5:37 (233, 79) Jan. 8 13 6.82 42 48.8 5.078 5.439 106 14.9 5:38 (205, 81) 132P/Helin-Roman-Alu 2 It brightened up to 13.1 mag in autumn (Oct. 28, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. But it is bright as 14.2 mag still now (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition for a long time. But it will be fainter than 18 mag in March. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 1 38.44 2 57.9 1.246 1.759 103 14.9 18:56 ( 0, 58) Jan. 8 1 51.31 4 20.1 1.322 1.779 99 15.1 18:41 ( 0, 60) C/2021 E3 ( ZTF ) Now it is 14.9 mag (Nov. 28, Thomas Lehmann). It is expected to brighten up to 11 mag from spring to summer. In the Southen Hemisphere, it is not observable until February, but it stays observable in good condition for a long time after that. In the Northern Hemisphere, it is hardly observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 19 16.36 -7 13.9 3.598 2.677 17 15.1 18:29 ( 83, -3) Jan. 8 19 22.61 -8 25.5 3.561 2.617 13 14.9 18:34 ( 86, -9) 117P/Helin-Roman-Alu 1 Now it is 15.8 mag (Oct. 4, Thomas Lehmann). Appearing in the morning. It will brighten up to 13 mag in summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 16 42.21 -22 50.0 4.010 3.177 28 15.1 5:37 (302, 5) Jan. 8 16 53.27 -23 19.2 3.950 3.167 32 15.0 5:38 (306, 8) C/2019 U5 ( PanSTARRS ) Now it is 15.7 mag (Dec. 28, D. Buczynski). It is expected to brighten up to 11 mag in 2023. In the Northern Hemisphere, it stays observable in good condition for a long time. It is not observable in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 16 35.82 31 0.7 5.736 5.349 62 15.1 5:37 (255, 37) Jan. 8 16 38.07 31 13.6 5.639 5.307 65 15.0 5:38 (257, 42) C/2020 R7 ( ATLAS ) Now it is 15.9 mag (Jan. 2, Thomas Lehmann). It will brighten up to 12.5 mag in summer. In the Southern Hemisphere, it stays observable in excellent condition for a long time. In the Northern Hemisphere, it is not observable until August. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 22 19.20 -64 56.2 4.375 3.882 54 15.1 18:29 ( 18,-15) Jan. 8 22 18.55 -63 29.3 4.380 3.840 51 15.1 18:34 ( 22,-16) 110P/Hartley 3 It brightened rapidly. Now it is 14.8 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). It is observable at 15 mag in excellent condition in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 8 32.74 15 48.0 1.580 2.499 153 15.1 1:52 ( 0, 71) Jan. 8 8 27.54 15 23.7 1.554 2.507 161 15.1 1:20 ( 0, 70) C/2021 O1 ( Nishimura ) It was observed at 9-10 mag from late July to early August. Although it had been unobservable for a long time, it is appearing in the morning sky now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 15 53.50 -22 5.4 3.101 2.423 39 15.3 5:37 (310, 13) Jan. 8 16 2.39 -23 6.5 3.120 2.512 44 15.5 5:38 (314, 16) C/2018 U1 ( Lemmon ) Now it is 15.9 mag (Oct. 8, Thomas Lehmann). It stays at 14-15 mag for a long time from 2021 to 2022. It is not observable from November to January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 17 2.60 -29 6.2 5.899 5.014 23 15.4 5:37 (304, -3) Jan. 8 17 6.12 -29 56.9 5.847 5.019 29 15.3 5:38 (308, 1) C/2021 O3 ( PanSTARRS ) Now it is 15.6 mag (Dec. 28, D. Buczynski). It is expected to brighten very rapidly up to 4.5 mag in April. However, it is not observable at the high light. In the Northern Hemisphere, it stays observable until early February when it brightens up to 14 mag. Then it will appear at 6 mag in mid May, and it stays observable in good condition after that while the comet will be fading. In the Southern Hemisphere, it is not observable until August. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 22 14.72 3 9.4 2.646 2.275 57 15.7 18:29 ( 62, 38) Jan. 8 22 21.42 2 26.3 2.636 2.168 51 15.5 18:34 ( 67, 33) C/2020 M5 ( ATLAS ) Now it is 15.5 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 15-16 mag for a long time. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 13 16.17 14 18.8 3.157 3.282 88 15.7 5:37 (324, 65) Jan. 8 13 12.87 13 44.2 3.064 3.310 95 15.7 5:38 (343, 68) C/2020 K1 ( PanSTARRS ) Now it is 16.0 mag (Dec. 8, A. Diepvens). It is expected to brighten up to 11 mag in 2023. In the Northern Hemisphere, it stays observable in good condition until November. But it becomes unobservable after that. In the Southern Hemisphere, it is not observable until February. But it will be observable in good condition at the high light. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 18 16.65 18 41.5 6.159 5.472 42 15.8 5:37 (255, 11) Jan. 8 18 21.52 18 17.0 6.106 5.424 42 15.7 5:38 (258, 16) 402P/2020 Q3 ( LINEAR ) First return of a new periodic comet observed at 16 mag from 2003 to 2004. Now it is 16.1 mag (Jan. 3, Toshihiko Ikemura, Hirohisa Sato). It stays 16 mag until March, and it stays observable in excellent condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 6 17.77 3 19.9 3.004 3.939 159 15.8 23:33 ( 0, 58) Jan. 8 6 13.61 4 6.6 3.019 3.940 156 15.8 23:02 ( 0, 59) C/2020 F5 ( MASTER ) Now it is 15.6 mag (Dec. 27, Ken-ichi Kadota). It will be fading after this. It will be unobservable soon in the Southern Hemisphere, or in early February in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 22 39.20 -15 12.7 5.394 4.907 55 15.9 18:29 ( 43, 28) Jan. 8 22 43.13 -14 5.1 5.511 4.934 49 15.9 18:34 ( 50, 25) C/2020 PV6 ( PanSTARRS ) Now it is 15.4 mag (Dec. 29, Ken-ichi Kadota). It will be fading after this. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until late January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 16 13.51 19 53.3 2.934 2.529 56 15.9 5:37 (270, 36) Jan. 8 16 12.78 21 3.4 2.869 2.561 62 16.0 5:38 (273, 43) 70P/Kojima Now it is 16.2 mag (Dec. 29, Ken-ichi Kadota). It will brighten up to 15.5 mag, and will be observable in excellent condition in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 11 36.73 6 44.6 1.535 2.065 108 16.0 4:55 ( 0, 62) Jan. 8 11 43.09 6 41.1 1.477 2.079 113 15.9 4:34 ( 0, 62) C/2019 F1 ( ATLAS-Africano ) Now it is 16.5 mag (Dec. 19, E. Cortes, B. Lutkenhoner). It will be fading slowly after this. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until July. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 23 10.14 -54 24.5 4.426 3.990 57 15.9 18:29 ( 17, -3) Jan. 8 23 19.65 -52 26.2 4.500 4.017 54 16.0 18:34 ( 21, -3) P/2021 N2 ( Fuls ) Brightened rapidly. Now it is 16.0 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). It is observable at 15.5-16 mag in good condition until winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 2 4.91 11 15.1 3.318 3.808 112 16.0 19:21 ( 0, 66) Jan. 8 2 7.21 11 11.9 3.419 3.811 106 16.1 18:56 ( 0, 66) C/2020 U5 ( PanSTARRS ) Now it is 16.6 mag (Dec. 10, ATLAS-MLO, Mauna Loa). In the Northern Hemisphere, it stays observable at 16 mag in good condition for a long time. In the Southern Hemisphere, it is not observable until 2023. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 11 44.09 87 42.2 3.396 3.896 113 16.1 5:02 (180, 37) Jan. 8 18 53.91 89 12.9 3.410 3.880 111 16.1 5:38 (181, 35) A/2021 F1 Now it is bright as 15.4 mag (Jan. 8, Ken-ichi Kadota. Cometary activity was detected. In the Northern Hemisphere, it is observable only until early March. In the Southern Hemisphere, it is not observable until late May. But it will be observable in good condition after that. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 16 0.56 33 11.6 1.946 1.830 68 16.4 5:37 (256, 45) Jan. 8 16 26.84 36 10.9 1.802 1.745 70 16.1 5:38 (252, 46) C/2020 H6 ( ATLAS ) Now it is 16.3 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 16 mag from 2021 to 2022. Appearing in the morning sky also in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 15 43.33 10 1.1 5.250 4.759 55 16.3 5:37 (286, 37) Jan. 8 15 48.91 11 3.0 5.173 4.768 60 16.2 5:38 (289, 42) C/2021 P4 ( ATLAS ) Now it is 16.0 mag (Dec. 28, D. Buczynski). It is expected to brighten up to 11 mag in summer. In the Northern Hemisphere, it stays observable in good condition until June when it brightens up to 11 mag. But it is not observable after the high light. In the Souther Hemisphere, it is not observable until October. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 22 38.38 52 32.9 2.981 3.156 91 16.4 18:29 (135, 58) Jan. 8 22 43.78 51 52.9 2.968 3.078 87 16.2 18:34 (132, 54) 108P/Ciffreo It brightened even after the perihelion passage, and it brightened up to 13.5 mag in December (Dec. 6, Katsumi Yoshimoto). Now it is fading. It has already faded down to 16.8 mag (Jan. 8, Toshihiko Ikemura, Hirohisa Sato). It is observable in excellent condition in the Northern Hemisphere. It locates low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 7 3.13 40 16.2 1.027 1.986 162 16.5 0:23 (180, 85) Jan. 8 6 55.88 40 43.2 1.066 2.022 161 16.8 23:44 (180, 84) 181P/Shoemaker-Levy 6 It has not been observed yet in this return. It will brighten up to 16.5 mag in January. It locates low in the evening. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 22 4.91 -18 52.2 1.592 1.164 46 16.7 18:29 ( 47, 21) Jan. 8 22 30.24 -15 0.8 1.590 1.160 46 16.6 18:34 ( 51, 22) C/2020 F7 ( Lemmon ) Now it is 17.7 mag (Jan. 2, J. Drummond). It brightened rapidly. It stays 17 mag for a long time from 2021 to 2022. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it will be observable only in extremely low sky from autumn to winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 8 28.83 -44 0.5 4.945 5.344 108 16.7 1:48 ( 0, 11) Jan. 8 8 19.50 -45 3.9 4.915 5.348 111 16.7 1:11 ( 0, 10) 254P/McNaught Now it is 16.7 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). It continued brightening for a while even after the perihelion passage. It stays observable at 16-17 mag in good condition for a while. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 4 28.59 -13 47.6 3.204 3.913 130 16.7 21:44 ( 0, 41) Jan. 8 4 25.74 -12 50.6 3.278 3.932 125 16.8 21:14 ( 0, 42) C/2019 O3 ( Palomar ) Now it is 16.9 mag (Jan. 8, Toshihiko Ikemura, Hirohisa Sato). Fading slowly. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 18 48.80 47 44.3 9.263 8.988 70 16.8 18:29 (134, 22) Jan. 8 18 52.61 48 7.1 9.274 8.996 70 16.8 5:38 (227, 25) 52P/Harrington-Abell Now it is 16.7 mag (Dec. 29, Ken-ichi Kadota). It stays observable at 17 mag from autumn to winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 12 32.38 -3 57.1 1.671 1.957 91 16.8 5:37 (355, 51) Jan. 8 12 39.70 -5 26.7 1.622 1.984 96 16.8 5:31 ( 0, 49) 430P/2021 Q2 ( Scotti ) First return of a new periodic comet which brightened up to 17 mag in 2011. Now it is 17.2 mag (Dec. 13, Catalina Sky Survey). It stays observable at 17 mag in good condition until spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 13 37.87 -5 32.1 1.507 1.581 75 16.9 5:37 (331, 45) Jan. 8 13 53.99 -7 3.8 1.469 1.595 78 16.9 5:38 (336, 45) 10P/Tempel 2 It brightened up to 10.1 mag in spring (Apr. 10, Marco Goiato). Now it is fading. It has already faded down to 16.5 mag (Dec. 30, Ken-ichi Kadota). It stays observable in good condition for a long time after this while the comet will fading. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 3 46.32 7 12.9 2.074 2.850 134 17.0 21:02 ( 0, 62) Jan. 8 3 44.36 7 49.7 2.185 2.889 127 17.2 20:33 ( 0, 63) 230P/LINEAR Now it is 18.7 mag (Jan. 1, W. Hasubick). It was expected to brighten up to 16.5-17 mag in winter. In its last apparition in 2015, it brightened up to 13 mag. But actually, it is fainter than this ephemeris recently. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 23 23.66 -19 9.8 1.927 1.748 64 17.0 18:29 ( 30, 30) Jan. 8 23 38.27 -17 9.2 1.953 1.719 61 17.0 18:34 ( 35, 30) C/2020 S4 ( PanSTARRS ) Now it is 16.7 mag (Jan. 8, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 14 mag in early 2023. It stays observable in good condition until spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 4 24.30 3 14.0 4.160 4.961 140 17.1 21:40 ( 0, 58) Jan. 8 4 21.87 3 36.8 4.183 4.918 134 17.0 21:10 ( 0, 59) 274P/Tombaugh-Tenagra Now it is 17.4 mag (Dec. 23, ATLAS-HKO, Haleakala). It is observable at 17 mag from November to March. It is observable in good condition in the Northern Hemisphere, but it locates low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 5 33.50 27 19.9 1.594 2.552 163 17.1 22:49 ( 0, 82) Jan. 8 5 28.17 28 3.2 1.613 2.539 155 17.1 22:16 ( 0, 83) 284P/McNaught It brightened up to 14.5 mag in autumn (Oct. 1, Ken-ichi Kadota). Now it is fading. It has already faded down to 16.4 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). It will be fading rapidly after this. It will be fainter than 18 mag in February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 0 7.83 -10 2.2 2.428 2.418 77 17.1 18:29 ( 22, 43) Jan. 8 0 17.68 -8 50.9 2.524 2.433 73 17.2 18:34 ( 29, 42) 193P/LINEAR-NEAT It brightened up to 15.2 mag in autumn (Oct. 11, Purple Mountain Observatory, XuYi Station). Now it is fading very rapidly. It has already faded down to 19.0 mag (Jan. 3, Toshihiko Ikemura, Hirohisa Sato). Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 23 54.82 8 58.7 2.279 2.358 82 17.1 18:29 ( 39, 59) Jan. 8 0 4.85 9 59.6 2.380 2.377 77 17.3 18:34 ( 48, 56) C/2019 T2 ( Lemmon ) Now it is 16.4 mag (Oct. 4, ATLAS-MLO, Mauna Loa). In the Southern Hemisphere, it stays observable for a long time. In the Northern Hemisphere, it is not observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 11 50.27 -54 40.1 3.767 3.704 78 17.1 5:09 ( 0, 0) Jan. 8 11 43.69 -54 51.4 3.723 3.751 84 17.2 4:35 ( 0, 0) 422P/2021 L1 ( Christensen ) First return of a new periodic comet which brightened up to 17 mag in 2006. Now it is 17.0 mag (Dec. 21, ATLAS-HKO, Haleakala). It stays 17 mag from 2021 to 2022. In the Southern Hemisphere, it stays observable in good condition for a while. It locates extremely low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 22 51.97 -37 35.5 3.575 3.106 54 17.2 18:29 ( 28, 11) Jan. 8 23 1.34 -35 32.4 3.637 3.105 50 17.2 18:34 ( 33, 10) C/2019 T3 ( ATLAS ) Now it is 16.6 mag (Dec. 25, D. Buczynski). Fading slowly. It is not observable until April in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 21 40.55 18 30.9 6.755 6.318 59 17.2 18:29 ( 85, 41) Jan. 8 21 43.29 17 52.0 6.861 6.334 54 17.2 18:34 ( 89, 34) C/2022 A1 ( Sarneczky ) Now it is 16.8 mag (Jan. 6, Michael Jager). Now it is approaching to Earth down to 0.3 a.u. and it brightened up to 17 mag. But it will fade out quickly. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 9 26.92 38 26.7 0.414 1.335 142 17.8 2:51 (180, 87) Jan. 8 6 54.21 27 20.6 0.321 1.302 173 17.2 23:29 ( 0, 81) C/2020 U4 ( PanSTARRS ) Now it is 17.8 mag (Jan. 8, Toshihiko Ikemura, Hirohisa Sato). It stays 17-18 mag for a long time from 2021 to 2022. It is observable in excellent condition in the Northern Hemisphere, It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 3 13.39 31 11.6 4.686 5.402 132 17.2 20:29 ( 0, 86) Jan. 8 3 5.42 30 31.3 4.782 5.395 124 17.3 19:54 ( 0, 86) C/2020 F2 ( ATLAS ) Now it is 17.2 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 17-18 mag for a long time until 2024. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 14 38.99 -5 27.4 9.316 8.890 61 17.3 5:37 (314, 38) Jan. 8 14 39.19 -5 15.7 9.196 8.885 68 17.3 5:38 (321, 42) 81P/Wild 2 Now it is 17.4 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 11.5 mag in 2022 winter. It stays observable while the comet will be brightening slowly. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 2 59.57 12 53.5 2.590 3.265 125 17.4 20:16 ( 0, 68) Jan. 8 2 57.82 12 54.7 2.643 3.228 118 17.3 19:47 ( 0, 68) 119P/Parker-Hartley Now it is 16.8 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 15 mag in 2022 winter. It will be unobservable in February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 23 8.95 -12 32.5 3.066 2.768 63 17.4 18:29 ( 37, 34) Jan. 8 23 17.57 -11 29.5 3.126 2.745 58 17.4 18:34 ( 44, 32) C/2021 D2 ( ZTF ) Now it is 17.6 mag (Dec. 11, Toshihiko Ikemura, Hirohisa Sato). It was expected to brighten up to 15.5 mag in winter. But actually, it is fading even before the perihelion passage. In the Northern Hemisphere, it stays observable in good condition for a long time. It is not observable at all in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 16 30.66 70 27.1 2.690 2.966 96 17.4 5:37 (204, 42) Jan. 8 16 36.34 72 55.0 2.643 2.959 98 17.4 5:38 (200, 43) C/2018 N2 ( ASASSN ) Now it is 17.7 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). In the Northern Hemisphere, it stays observable for a long time while it is getting fainter slowly. In the Southern Hemisphere, it will never be observable again. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 14 50.31 41 21.3 7.494 7.459 84 17.5 5:37 (247, 60) Jan. 8 14 52.07 41 41.5 7.472 7.506 88 17.5 5:38 (245, 65) C/2021 U5 ( Catalina ) Now it is 16.9 mag (Jan. 2, J. Drummond). It is observable at 17 mag in good condition from winter to spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 10 11.81 -28 22.7 1.884 2.384 108 17.6 3:31 ( 0, 27) Jan. 8 10 15.70 -28 29.4 1.811 2.376 113 17.5 3:07 ( 0, 26) 99P/Kowal 1 Now it is 17.3 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). It will be observable at 17 mag in good condition in spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 13 30.21 -8 11.8 4.856 4.722 76 17.6 5:37 (335, 44) Jan. 8 13 33.89 -8 35.1 4.747 4.720 82 17.6 5:38 (344, 45) P/1997 B1 ( Kobayashi ) First return of a new periodic comet which brightened up to 16.5 mag in 1997. Now it is 19.4 mag (Jan. 11, Purple Mountain Observatory, XuYi Station), fainter than this ephemeris by 2 mag. It is observable in good condition from January to March. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 8 57.85 28 52.9 1.340 2.244 149 17.7 2:17 ( 0, 84) Jan. 8 8 55.88 28 32.0 1.279 2.216 156 17.6 1:48 ( 0, 83) P/2021 Q5 ( ATLAS ) It brightened up to 12.7 mag in autumn (Oct. 9, Thomas Lehmann). It stays observable in good condition for a long time. But it is fading rapidly, and it will be fainter than 18 mag in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 11 17.78 -11 32.4 1.358 1.869 104 17.6 4:37 ( 0, 43) Jan. 8 11 18.63 -12 27.0 1.336 1.922 111 17.8 4:10 ( 0, 42) 15P/Finlay It brightened very rapidly up to 10.7 mag in July (July 20, Osamu Miyazaki). Now it is fading. It has already faded down to 18.1 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 8 33.29 30 19.8 1.400 2.327 154 17.6 1:53 ( 0, 85) Jan. 8 8 22.65 30 53.2 1.431 2.388 162 17.8 1:15 ( 0, 86) C/2019 N1 ( ATLAS ) It brightened up to 11.6 mag in last winter (Feb. 18, Thomas Lehmann). Now it is fading. It has already faded down to 16.6 mag (Nov. 23, Thomas Lehmann). In the Southern Hemisphere, it stays observable in good condition after this. In the Northern Hemisphere, it will never be observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 1 5.49 -56 16.7 4.975 4.794 73 17.6 18:29 ( 1, -1) Jan. 8 1 5.11 -54 30.9 5.095 4.857 70 17.7 18:34 ( 6, 0) C/2021 T2 ( Fuls ) Now it is 17.8 mag (Jan. 2, Ken-ichi Kadota). It is expected to brighten up to 13.5 mag from June to July. It is observable only in the Southern Hemisphere at the high light. In the Northern Hemisphere, it is observable only until March when it brightens up to 16.5 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 1 18.28 16 59.4 2.122 2.546 104 17.7 18:35 ( 0, 72) Jan. 8 1 13.47 14 7.0 2.182 2.469 94 17.6 18:34 ( 21, 68) 28P/Neujmin 1 Now it is 17.2 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). In the Northern Hemisphere, it stays observable in good condition after this while the comet will be fading. In the Southern Hemisphere, it stays locating extremely low for a long time. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 4 17.57 40 44.3 2.622 3.470 144 17.6 21:34 (180, 84) Jan. 8 4 14.14 40 5.7 2.732 3.524 137 17.8 21:03 (180, 85) C/2021 K1 ( ATLAS ) Now it is 17.5 mag (Jan. 3, Toshihiko Ikemura, Hirohisa Sato). It continued brightening even after the perihelion passage. But it will be fading after this, and it will be fainter than 18 mag in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 1 10.19 -10 0.2 3.196 3.374 91 17.7 18:29 ( 1, 45) Jan. 8 1 15.17 -9 5.8 3.332 3.416 86 17.9 18:34 ( 10, 46) C/2017 Y2 ( PanSTARRS ) It was observed at 16 mag from 2020 to 2021. Now it is fading. It will be fainter than 18 mag in spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 15 40.12 -33 5.0 6.393 5.695 41 17.7 5:37 (319, 7) Jan. 8 15 41.35 -33 48.0 6.336 5.726 48 17.7 5:38 (324, 10) 241P/LINEAR Now it is 17.6 mag (Jan. 3, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 9 7.86 19 29.5 1.545 2.426 146 17.7 2:27 ( 0, 74) Jan. 8 9 1.20 18 48.3 1.537 2.464 155 17.8 1:53 ( 0, 74) 2021 WT6 Peculiar asteroid moving along a cometary orbit. It is observable at 17.5 mag in good condition in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 7 14.99 -3 38.5 1.077 2.000 152 17.9 0:36 ( 0, 51) Jan. 8 6 33.36 0 46.9 1.023 1.963 156 17.7 23:18 ( 0, 56) (3200) Phaethon In the Northern Hemisphere, it stays observable at 17 mag in good condition from November to December. It locates low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 1 50.78 25 44.1 1.400 2.011 113 17.7 19:07 ( 0, 81) Jan. 8 1 46.57 24 0.8 1.456 1.964 105 17.8 18:35 ( 0, 79) C/2021 Y1 ( ATLAS ) Now it is 17.5 mag (Jan. 1, H. Nohara). It is expected to brighten up to 12 mag from winter to summer in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 spring. In the Southern Hemisphere, it is not observable until summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 1 22.04 55 7.0 5.001 5.476 114 17.9 18:39 (180, 70) Jan. 8 1 22.76 53 45.0 5.019 5.418 108 17.8 18:34 (170, 71) P/2020 V4 ( Rankin ) Now it is 17.5 mag (Jan. 3, Toshihiko Ikemura, Hirohisa Sato). It is observable at 18 mag in good condition in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 7 59.84 2 59.4 4.323 5.218 152 17.9 1:19 ( 0, 58) Jan. 8 7 56.92 3 1.9 4.297 5.223 158 17.9 0:49 ( 0, 58) C/2021 G2 ( ATLAS ) Now it is 17.4 mag (Jan. 2, J. Drummond). It will brighten up to 14 mag from 2024 to 2025. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 7 30.23 -31 44.4 8.088 8.678 124 17.9 0:50 ( 0, 23) Jan. 8 7 27.59 -31 52.9 8.029 8.641 125 17.9 0:19 ( 0, 23) C/2019 K7 ( Smith ) Now it is 17.4 mag (Jan. 8, Toshihiko Ikemura, Hirohisa Sato). Fading slowly. In the Northern Hemisphere, it stays observable in good condition for a long time. It is not observable after this in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Jan. 1 16 55.71 50 8.4 6.439 6.292 77 17.9 5:37 (230, 39) Jan. 8 16 59.06 50 57.2 6.439 6.329 79 18.0 5:38 (230, 43)