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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 6.8 mag still now (Jan. 13, 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. 15 21 42.19 -36 24.7 1.312 0.666 29 7.3 20:58 ( 53, 11)
Jan. 22 21 39.38 -36 20.1 1.504 0.736 24 8.1 20:53 ( 50, 6)
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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. 15 0 46.84 -8 6.8 1.210 1.324 73 9.0 20:58 (103, 31)
Jan. 22 1 2.37 -2 59.6 1.229 1.313 71 8.9 20:53 (107, 27)
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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. 15 8 46.87 29 8.1 0.539 1.510 164 9.7 1:12 (180, 26)
Jan. 22 8 39.78 29 10.0 0.581 1.559 169 10.0 0:37 (180, 26)
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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. 15 6 58.37 30 15.3 2.592 3.555 166 9.8 23:19 (180, 25)
Jan. 22 6 51.95 28 49.7 2.620 3.556 158 9.9 22:45 (180, 26)
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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. 15 1 1.80 -1 20.1 0.651 1.074 79 10.0 20:58 (112, 30)
Jan. 22 1 33.60 0 54.3 0.642 1.082 80 10.1 20:53 (116, 30)
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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. 15 18 8.91 12 24.0 4.962 4.270 41 10.8 3:19 (270,-22)
Jan. 22 18 14.47 12 3.7 4.865 4.208 43 10.7 3:28 (266,-15)
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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. 15 17 34.20 -20 39.9 2.444 1.674 30 11.9 3:19 (292, 4)
Jan. 22 17 56.37 -20 54.8 2.392 1.650 32 11.8 3:28 (290, 7)
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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. 15 12 5.87 -29 42.2 4.143 4.411 99 12.2 3:19 (256, 74)
Jan. 22 12 7.32 -29 40.0 4.030 4.395 105 12.1 3:28 (237, 81)
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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. 15 6 24.81 8 25.2 1.113 2.053 156 12.3 22:45 (180, 47)
Jan. 22 6 21.87 9 4.2 1.180 2.093 150 12.6 22:15 (180, 46)
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Now it is 14.9 mag (Jan. 4, 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. 15 16 18.78 -17 13.7 2.086 1.617 48 12.7 3:19 (279, 17)
Jan. 22 16 40.17 -18 28.3 2.029 1.598 50 12.5 3:28 (278, 21)
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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. 15 0 29.56 -15 33.0 2.031 1.880 67 13.1 20:58 ( 93, 32)
Jan. 22 0 45.22 -13 38.0 2.135 1.928 64 13.7 20:53 ( 94, 29)
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Now it is 16.6 mag (Jan. 13, Jean-Francois Soulier).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 15 4 17.50 30 29.9 5.238 5.949 132 13.4 20:58 (175, 24)
Jan. 22 4 16.23 30 15.1 5.326 5.951 125 13.4 20:53 (170, 24)
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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. 15 12 33.81 -58 9.6 3.478 3.464 81 14.1 3:19 (332, 62)
Jan. 22 12 22.91 -60 51.7 3.371 3.436 85 14.0 3:28 (346, 63)
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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. 15 14 28.30 6 44.9 4.193 4.182 82 14.0 3:19 (241, 25)
Jan. 22 14 26.99 8 10.1 4.102 4.219 90 14.0 3:28 (232, 30)
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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. 15 20 8.19 -33 10.1 3.933 2.982 12 14.3 20:58 ( 42, -6)
Jan. 22 20 22.00 -33 0.3 3.987 3.037 13 14.4 20:53 ( 41, -7)
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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. 15 22 10.82 -10 28.8 2.604 1.904 36 14.3 20:58 ( 78, 1)
Jan. 22 22 27.78 -8 59.3 2.671 1.931 33 14.6 20:53 ( 78, -1)
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Now it is 14.5 mag (Jan. 12, Michael Jager). 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. 15 10 7.60 16 54.8 1.649 2.526 146 14.6 2:32 (180, 38)
Jan. 22 10 4.88 17 14.9 1.583 2.504 153 14.5 2:02 (180, 38)
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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. 15 19 29.08 -9 35.1 3.510 2.558 12 14.8 3:19 (302,-24)
Jan. 22 19 35.75 -10 43.7 3.448 2.500 13 14.7 3:28 (298,-18)
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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. 15 13 6.03 44 23.3 4.942 5.382 111 14.8 3:19 (203, 5)
Jan. 22 13 4.22 46 4.4 4.816 5.326 116 14.7 3:28 (196, 6)
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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. 15 16 33.77 -54 2.9 2.689 2.170 48 14.8 3:19 (317, 31)
Jan. 22 16 49.73 -54 19.8 2.710 2.241 51 15.1 3:28 (317, 34)
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Now it is 15.3 mag (Jan. 5, Thomas Lehmann). 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. 15 16 39.98 31 33.2 5.537 5.265 69 14.9 3:19 (242,-15)
Jan. 22 16 41.48 31 59.6 5.429 5.224 72 14.8 3:28 (237, -9)
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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. 15 17 4.27 -23 45.8 3.884 3.158 37 14.9 3:19 (291, 12)
Jan. 22 17 15.15 -24 9.7 3.813 3.149 41 14.9 3:28 (288, 17)
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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. 15 22 19.06 -62 7.3 4.377 3.799 48 15.0 20:58 ( 32, 28)
Jan. 22 22 20.44 -60 50.5 4.366 3.758 46 14.9 20:53 ( 32, 26)
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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. 15 22 28.99 1 49.8 2.616 2.059 46 15.2 20:58 ( 90, -3)
Jan. 22 22 37.41 1 19.2 2.585 1.948 40 15.0 20:53 ( 88, -5)
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It brightened rapidly. Now it is 14.7 mag (Jan. 11, Michael Jager). It stays 15 mag until February, and it is observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 15 8 21.61 15 2.5 1.542 2.516 169 15.2 0:46 (180, 40)
Jan. 22 8 15.36 14 43.9 1.543 2.525 174 15.2 0:13 (180, 40)
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Now it is 15.9 mag (Oct. 8, Thomas Lehmann). It stays at 14-15 mag for a long time from 2021 to 2022. In the Southern Hemisphere, it stays observable in excellent condition for a long time. In the Northern Hemiphere, it locates extremely low in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 15 17 9.43 -30 48.7 5.785 5.024 36 15.3 3:19 (298, 14)
Jan. 22 17 12.48 -31 42.0 5.711 5.031 42 15.3 3:28 (295, 21)
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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. 15 2 4.67 5 43.6 1.402 1.801 96 15.4 20:58 (131, 36)
Jan. 22 2 18.43 7 6.9 1.486 1.826 93 15.6 20:53 (130, 33)
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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. 15 16 58.62 39 29.3 1.674 1.662 72 15.8 3:19 (236,-22)
Jan. 22 17 37.50 42 53.7 1.566 1.579 72 15.5 3:28 (233,-23)
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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. 15 18 26.33 17 57.0 6.043 5.376 43 15.7 3:19 (267,-29)
Jan. 22 18 31.04 17 41.3 5.972 5.328 45 15.6 3:28 (263,-22)
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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. 15 16 10.55 -24 3.6 3.131 2.601 49 15.6 3:19 (285, 22)
Jan. 22 16 17.93 -24 57.4 3.134 2.689 54 15.8 3:28 (282, 29)
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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. 15 13 8.30 13 13.4 2.972 3.339 103 15.7 3:19 (219, 32)
Jan. 22 13 2.38 12 45.8 2.885 3.369 111 15.7 3:28 (208, 38)
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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. 15 11 48.11 6 47.9 1.423 2.094 119 15.8 3:19 (199, 47)
Jan. 22 11 51.68 7 5.2 1.375 2.110 126 15.8 3:28 (187, 48)
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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. 15 6 9.78 4 57.8 3.049 3.942 151 15.9 22:30 (180, 50)
Jan. 22 6 6.45 5 52.4 3.092 3.944 145 15.9 21:59 (180, 49)
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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. 15 22 50.41 51 22.9 2.955 3.000 83 16.1 20:58 (137,-25)
Jan. 22 22 58.18 51 3.3 2.939 2.921 79 16.0 20:53 (135,-27)
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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. 15 22 47.32 -12 58.0 5.621 4.961 44 16.0 20:58 ( 81, 9)
Jan. 22 22 51.72 -11 51.3 5.723 4.988 38 16.1 20:53 ( 79, 5)
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Now it is 15.6 mag (Jan. 7, Toshihiko Ikemura, Hirohisa Sato). 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. 15 16 11.15 22 27.1 2.796 2.595 68 16.0 3:19 (246, -4)
Jan. 22 16 8.42 24 5.0 2.718 2.631 74 16.1 3:28 (239, 2)
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Now it is 16.6 mag (Dec. 27, Ken-ichi Kadota). 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. 15 22 1.06 87 3.5 3.434 3.865 108 16.1 20:58 (176,-35)
Jan. 22 22 31.76 84 50.6 3.469 3.851 105 16.1 20:53 (174,-35)
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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. 15 23 29.03 -50 30.4 4.572 4.045 52 16.1 20:58 ( 49, 34)
Jan. 22 23 38.25 -48 37.2 4.642 4.074 49 16.1 20:53 ( 50, 31)
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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. 15 2 10.26 11 13.6 3.524 3.815 99 16.2 20:58 (136, 32)
Jan. 22 2 14.01 11 19.6 3.631 3.819 93 16.2 20:53 (132, 29)
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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. 15 15 54.20 12 11.3 5.094 4.777 65 16.2 3:19 (251, 5)
Jan. 22 15 59.16 13 26.0 5.012 4.787 71 16.2 3:28 (245, 11)
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It was observed at 15 mag in 2021. Now it is fading. It stays observable at 17 mag for a while in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 15 18 4.67 -0 45.4 5.789 4.982 32 16.6 3:19 (281,-14)
Jan. 22 18 10.12 0 10.0 5.750 4.994 36 16.6 3:28 (275, -8)
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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. 15 22 55.18 -10 57.1 1.596 1.163 46 16.6 20:58 ( 84, 10)
Jan. 22 23 19.74 -6 45.6 1.608 1.173 46 16.8 20:53 ( 88, 8)
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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. 15 8 9.51 -45 55.6 4.896 5.352 112 16.7 0:34 ( 0, 79)
Jan. 22 7 59.09 -46 34.5 4.887 5.357 113 16.7 23:51 ( 0, 78)
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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. 15 18 56.42 48 34.6 9.281 9.004 70 16.8 3:19 (233,-45)
Jan. 22 19 0.19 49 6.7 9.285 9.012 70 16.8 3:28 (232,-39)
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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. 15 4 23.68 -11 48.3 3.361 3.951 120 16.8 20:58 (172, 66)
Jan. 22 4 22.46 -10 42.2 3.451 3.970 115 16.9 20:53 (159, 64)
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First return of a new periodic comet which brightened up to 17 mag in 2011. Now it is 18.2 mag (Jan. 8, Toshihiko Ikemura, Hirohisa Sato). It brightened up to 16.8 mag in October (Oct. 10, Ken-ichi Kadota), however, it has been fading after that.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 15 14 9.39 -8 28.6 1.431 1.611 81 16.9 3:19 (251, 39)
Jan. 22 14 23.94 -9 45.9 1.393 1.630 84 16.8 3:28 (248, 44)
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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. 15 12 45.74 -6 50.2 1.574 2.013 101 16.8 3:19 (229, 52)
Jan. 22 12 50.39 -8 7.2 1.527 2.043 106 16.9 3:28 (218, 58)
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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. 15 23 53.43 -15 2.5 1.977 1.692 58 17.0 20:58 ( 88, 24)
Jan. 22 0 9.08 -12 50.0 2.000 1.668 56 16.9 20:53 ( 90, 22)
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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. 15 4 19.98 4 3.3 4.216 4.875 127 17.0 20:58 (173, 51)
Jan. 22 4 18.71 4 33.2 4.258 4.832 120 17.0 20:53 (164, 49)
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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. 15 6 49.44 40 53.7 1.117 2.058 156 17.1 23:10 (180, 14)
Jan. 22 6 44.40 40 49.8 1.178 2.096 151 17.4 22:38 (180, 14)
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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. 15 5 23.89 28 43.0 1.643 2.526 147 17.1 21:45 (180, 26)
Jan. 22 5 20.92 29 19.4 1.685 2.515 139 17.1 21:14 (180, 26)
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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. 15 11 35.54 -54 54.1 3.677 3.799 89 17.2 3:19 (344, 69)
Jan. 22 11 25.96 -54 45.9 3.632 3.847 95 17.2 3:22 ( 0, 70)
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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. 15 2 57.19 13 1.1 2.702 3.191 111 17.3 20:58 (149, 36)
Jan. 22 2 57.70 13 12.4 2.765 3.154 104 17.2 20:53 (144, 34)
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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. 15 14 39.06 -5 1.8 9.071 8.880 75 17.3 3:19 (253, 31)
Jan. 22 14 38.59 -4 45.5 8.942 8.875 82 17.2 3:28 (246, 38)
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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. 15 2 58.56 29 52.4 4.890 5.389 115 17.3 20:58 (157, 21)
Jan. 22 2 52.78 29 15.9 5.007 5.383 107 17.4 20:53 (151, 19)
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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. 15 10 18.54 -28 18.4 1.741 2.371 118 17.5 2:42 (180, 83)
Jan. 22 10 20.36 -27 47.5 1.676 2.368 123 17.4 2:17 (180, 83)
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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. 15 0 27.86 -7 37.7 2.619 2.449 69 17.4 20:58 (100, 27)
Jan. 22 0 38.31 -6 23.2 2.714 2.465 65 17.5 20:53 (100, 24)
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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. 15 0 15.28 11 2.5 2.481 2.397 73 17.4 20:58 (114, 13)
Jan. 22 0 26.06 12 7.1 2.582 2.418 69 17.5 20:53 (113, 10)
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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. 15 3 43.66 8 29.3 2.303 2.928 120 17.4 20:58 (161, 45)
Jan. 22 3 44.15 9 10.8 2.428 2.966 113 17.6 20:53 (155, 42)
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Now it is 16.9 mag (Jan. 6, Thomas Lehmann). 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. 15 16 41.24 75 42.4 2.603 2.953 101 17.4 3:19 (197,-33)
Jan. 22 16 44.40 78 48.0 2.571 2.949 102 17.5 3:28 (193,-32)
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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. 15 13 37.06 -8 55.3 4.635 4.718 88 17.5 3:19 (245, 45)
Jan. 22 13 39.69 -9 12.4 4.524 4.716 95 17.4 3:28 (236, 51)
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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. 15 4 46.57 5 57.0 0.380 1.277 134 17.5 21:01 (180, 50)
Jan. 22 3 43.75 -7 0.0 0.540 1.261 108 18.2 20:53 (142, 57)
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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. 15 1 10.40 11 32.0 2.247 2.391 86 17.5 20:58 (124, 23)
Jan. 22 1 8.83 9 13.6 2.314 2.314 77 17.5 20:53 (117, 20)
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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. 15 14 53.34 42 5.5 7.449 7.554 92 17.5 3:19 (220, -4)
Jan. 22 14 54.07 42 32.7 7.427 7.601 96 17.5 3:28 (215, 0)
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It has not been observed yet in this apparition. It will be observable at 16 mag in good condition in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 15 14 46.02 -30 45.6 1.752 1.638 66 17.9 3:19 (282, 42)
Jan. 22 15 9.66 -32 6.6 1.677 1.603 68 17.7 3:28 (282, 45)
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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. 15 15 42.12 -34 31.7 6.270 5.757 54 17.7 3:19 (292, 32)
Jan. 22 15 42.39 -35 16.0 6.196 5.788 61 17.7 3:28 (290, 40)
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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. 15 1 24.45 52 25.6 5.043 5.360 103 17.8 20:58 (153, -7)
Jan. 22 1 27.02 51 9.8 5.074 5.302 98 17.8 20:53 (150, -8)
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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. 15 1 5.78 -52 48.2 5.214 4.919 67 17.8 20:58 ( 48, 49)
Jan. 22 1 7.31 -51 9.1 5.331 4.981 64 17.9 20:53 ( 50, 46)
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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. 15 7 24.89 -31 56.1 7.980 8.603 126 17.9 23:45 (180, 87)
Jan. 22 7 22.21 -31 53.9 7.940 8.565 126 17.8 23:15 (180, 87)
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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. 15 5 49.90 5 41.0 1.023 1.928 147 17.8 22:07 (180, 49)
Jan. 22 5 9.08 10 21.7 1.073 1.895 134 18.1 21:00 (180, 44)
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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. 15 7 53.85 3 8.3 4.286 5.230 161 17.9 0:18 (180, 52)
Jan. 22 7 50.74 3 18.3 4.289 5.236 162 17.9 23:43 (180, 52)
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It has not been observed yet in this apparition. It is expected to brighten up to 11 mag from summer to autumn. It stays observable in good condition in the Southern Hemisphere. In the Northern Hemisphere, it becomes extremely low from August to September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 15 11 8.95 22 4.9 1.915 2.684 132 18.2 3:19 (184, 33)
Jan. 22 11 7.53 23 3.7 1.800 2.631 139 17.9 3:04 (180, 32)
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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. 15 8 53.69 18 8.8 1.543 2.502 163 17.9 1:18 (180, 37)
Jan. 22 8 45.77 17 30.9 1.562 2.541 172 18.0 0:43 (180, 38)
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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. 15 1 44.75 22 33.9 1.514 1.914 97 17.9 20:58 (138, 19)
Jan. 22 1 44.98 21 22.8 1.571 1.860 90 18.0 20:53 (133, 17)
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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. 15 8 11.79 31 17.4 1.477 2.449 168 17.9 0:37 (180, 24)
Jan. 22 8 1.36 31 31.3 1.537 2.508 167 18.1 23:54 (180, 24)
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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). It is fainter than originally predicted 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. 15 8 49.07 28 29.8 1.233 2.195 163 19.9 1:14 (180, 27)
Jan. 22 8 44.72 27 58.2 1.196 2.171 169 19.8 0:42 (180, 27)
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