Weekly Information about Bright Comets (2022 Dec. 31: North)

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 Updated on December 31, 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.

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* C/2022 E3 ( ZTF )

Now it is very bright as 7.6 mag (Dec. 28, Carlos Labordena). It will approach to Earth down to 0.29 a.u. in February, and it is expected to brighten up to 5 mag. In the Northern Hemisphere, it stays observable in excellent condition for a long time. In the Southern Hemisphere, it is not observable until early February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  15 53.23   30 40.0   1.066   1.132    66    7.7   5:37 (259, 44)  
Jan.  7  15 51.43   34 13.9   0.871   1.116    73    7.2   5:38 (257, 51)

* C/2017 K2 ( PanSTARRS )

Now it is very bright as 7.9 mag (Dec. 26, Martin Masek). It is observable at 8 mag for a long time from 2022 to 2023. In the Southern Hemisphere, it stays observable for a long time, although it becomes low temporarily from November to December. In the Northern Hemisphere, it is not observable until 2023 summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  18 43.72  -64 41.9   2.416   1.803    41    7.8  18:28 ( 30,-33)  
Jan.  7  19 21.61  -67  9.2   2.373   1.812    44    7.8  18:33 ( 28,-33)

* C/2020 V2 ( ZTF )

Now it is 9.8 mag (Dec. 27, Carlos Labordena). It stays bright as 10 mag for a long time until 2023 autumn. In the Northern Hemisphere, it stays observable in good condition until 2023 autumn. In the Southern Hemipshere, it stays unobservable until 2023 summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   2 30.59   81 43.9   2.071   2.663   116    9.8  19:49 (180, 44)  
Jan.  7   1 47.13   76  7.9   2.062   2.621   114    9.8  18:41 (180, 49)

* C/2022 A2 ( PanSTARRS )

Brightening very rapidly. Now it is very bright as 10.4 mag (Dec. 28, Osamu Miyazaki). It stays 10-11 mag until March. In the Northern Hemisphere, it will be observable in good condition after this. In the Southern Hemisphere, it is not observable until 2023 June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  15 30.56   47 22.8   1.705   1.850    82   11.2   5:37 (236, 52)  
Jan.  7  16 13.10   51 37.8   1.646   1.820    83   11.0   5:38 (229, 49)

* C/2019 L3 ( ATLAS )

It brightened up to 8.3 mag in last winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is fading. But it is bright as 11.2 mag still now (Dec. 28, Osamu Miyazaki). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   9 55.99  -30 30.7   4.347   4.752   108   11.3   3:20 (  0, 24)  
Jan.  7   9 52.98  -31 37.8   4.317   4.791   113   11.4   2:49 (  0, 23)

* 81P/Wild 2

Now it is 11.7 mag (Dec. 26, Chris Wyatt). Appearing in the morning sky also in the Southern Hemisphere. It stays 11-12 mag until spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  14 29.28  -12 25.9   1.853   1.606    59   11.5   5:37 (320, 33)  
Jan.  7  14 48.29  -13 43.8   1.816   1.614    62   11.5   5:38 (323, 33)

* C/2022 P1 ( NEOWISE )

Now it is bright as 11.0 mag (Dec. 7, Jose Guilherme de S. Aguiar). It will be fading after this. In the Southern Hemisphere, it becomes unobservable temporarily from December to January. In the Northern Hemisphere, it is not observable until spring when it fades down to 15 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  19 27.37  -38 10.6   2.555   1.650    18   11.6  18:28 ( 55,-17)  
Jan.  7  19 26.96  -38  5.0   2.598   1.675    16   11.8  18:33 ( 59,-23)

* C/2020 K1 ( PanSTARRS )

Now it is 13.2 mag (Nov. 27, Ken-ichi Kadota). It is expected to brighten up to 11 mag in 2023. In the Southern Hemisphere, it stays observable in good condition for a long time, although it becomes unobservable temporarily from November to January. In the Northern Hemisphere, it is not observable until 2024 autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  18 23.93  -25  5.7   4.301   3.321     3   11.9   5:37 (290,-16)  
Jan.  7  18 31.49  -26 13.5   4.262   3.296     9   11.9   5:38 (293,-13)

* 96P/Machholz 1

It will approach to Sun down to 0.1 a.u. on Jan. 31. In the Northern Hemisphere, it will appear in the morning sky at 9 mag in mid February, then it stays observable while the comet will be fading. In the Southern Hemisphere, it stays observable for a long time, although it is not observable from mid January to mid February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  19 50.50  -42 40.7   1.746   0.944    24   13.6  18:28 ( 49,-16)  
Jan.  7  20 11.77  -40 56.7   1.599   0.788    22   12.5  18:33 ( 51,-16)

* C/2019 U5 ( PanSTARRS )

Now it is 12.4 mag (Dec. 18, Jose Guilherme de S. Aguiar). It stays 12 mag until summer. In the Northern Hemisphere, it stays observable in good condition for a long time. It is appearing in the morning sky also in the Southern Hemisphere. It stays observable in good condition after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  13 51.75    3 47.7   3.844   3.712    74   12.7   5:37 (318, 51)  
Jan.  7  13 50.04    3 10.1   3.706   3.699    81   12.6   5:38 (330, 54)

* C/2019 T4 ( ATLAS )

Now it is bright as 13.3 mag (Dec. 24, Martin Masek). It stays 13 mag until spring. It stays observable in good condition for a while after this. It will be getting higher rapidly also in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  15  5.80   -0 44.9   5.041   4.569    56   12.9   5:37 (302, 36)  
Jan.  7  15 11.84   -0  9.1   4.970   4.591    61   12.9   5:38 (307, 40)

* 118P/Shoemaker-Levy 4

Now it is 13.5 mag (Dec. 18, Jose Guilherme de S. Aguiar). It stays bright as 13 mag and observable in excellent condition until February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   8 44.66    8 37.4   0.954   1.856   146   12.9   2:09 (  0, 64)  
Jan.  7   8 43.13    9 30.9   0.932   1.867   154   12.9   1:40 (  0, 64)

* C/2022 U2 ( ATLAS )

Brightening very rapidly. Now it is very bright as 11.6 mag (Dec. 28, Martin Masek). In the Northern Hemisphere, it stays observable in excellent condition. In the Southern Hemisphere, it is not observable until February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  21  9.47   75 40.4   0.741   1.345   101   13.6  18:28 (164, 41)  
Jan.  7  22 57.99   77 34.6   0.675   1.332   105   13.4  18:33 (169, 44)

* 29P/Schwassmann-Wachmann 1

It brightened in major outburst in late November. Now it is very bright as 10.9 mag (Dec. 29, Martin Masek). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   6 37.59   29 28.0   5.079   6.057   173   13.4   0:03 (  0, 84)  
Jan.  7   6 33.77   29 26.0   5.090   6.059   169   13.4  23:27 (  0, 84)

* C/2021 Y1 ( ATLAS )

Now it is 14.2 mag (Dec. 26, Chris Wyatt). The brightness evolution is slower than originally predicted. It stays 13.5 mag until next summer. In the Northern Hemisphere, it stays observable in good condition until spring. In the Southern Hemisphere, it stays observable in good condition for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   3 33.95   -2 47.9   1.756   2.485   128   13.5  20:54 (  0, 52)  
Jan.  7   3 26.82   -5 25.3   1.809   2.440   118   13.5  20:20 (  0, 49)

* 71P/Clark

It will brighten up to 13 mag in winter. But the condition is bad. It is not observable until February in the Southern Hemisphere, or until May in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  17 32.86  -24 52.6   2.532   1.604    15   13.7   5:37 (296, -6)  
Jan.  7  17 56.11  -25 26.3   2.509   1.596    17   13.5   5:38 (297, -6)

* 73P/Schwassmann-Wachmann 3

Outburst occured in early October, and it brightened up to 9.9 mag (Oct. 14, Thomas Lehmann). It is bright as 13.2 mag still now (Dec. 26, Chris Wyatt). It stays observable only until February in the Southern Hemisphere, or until March in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  23  8.82  -14 53.0   2.103   1.888    63   13.7  18:28 ( 34, 33)  
Jan.  7  23 23.88  -12 50.1   2.230   1.951    60   14.2  18:33 ( 40, 33)

* C/2021 E3 ( ZTF )

It brightened up to 9.3 mag in early summer (June 5, Chris Wyatt). Now it is fading. It has already faded down to 15.5 mag (Dec. 10, iTelescope Observatory, Siding Spring). In the Southen Hemisphere, it stays observable in good condition for a long time. It became observable also in the Northern Hemisphere. But it stays locating low for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   8 37.61  -42 41.3   2.570   3.032   108   14.1   2:02 (  0, 12)  
Jan.  7   8 20.44  -41 26.6   2.562   3.095   114   14.2   1:18 (  0, 13)

* C/2021 X1 ( Maury-Attard )

Now it is 14.4 mag (Dec. 20, Chris Wyatt). It stays 14 mag in 2023. In the Southern Hemisphere, it stays observable in good condition for a long time. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   3 44.29  -22 16.7   2.956   3.524   117   14.3  21:04 (  0, 33)  
Jan.  7   3 30.24  -21  3.3   3.023   3.498   111   14.3  20:23 (  0, 34)

* C/2022 S3 ( PanSTARRS )

Tiny comet, but it will approach to Sun down to 0.8 a.u. in January, and to Earth down to 0.6 a.u. in March. It will brighten up to 14 mag from January to March. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable now. It will become observable in early March. It has not been observed since late October. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  21  8.53  -46 35.4   1.481   0.930    38   15.0  18:28 ( 36, -7)  
Jan.  7  21 23.88  -49 46.7   1.419   0.882    37   14.7  18:33 ( 36,-12)

* C/2021 T4 ( Lemmon )

Now it is 14.8 mag (Dec. 26, Chris Wyatt). It is expected to brighten up to 8 mag in July. It will be getting lower after this. And it will be unobservable in February. In the Southern Hemisphere, it will be observable in excellent condition at the high light. In the Northern Hemisphere, it becomes very low at the high lihght. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   0 38.11  -13 45.8   3.049   3.112    84   14.9  18:28 (  9, 41)  
Jan.  7   0 32.72  -13 46.4   3.119   3.042    76   14.8  18:33 ( 21, 39)

* C/2021 P4 ( ATLAS )

It brightened up to 10.4 mag from June to July (July 22, Ken-ichi Kadota). Now it is fading. Appearing in the morning sky in the Souther Hemisphere. However, now it is not detected, fainter than 17.5 mag (Nov. 29, Martin Masek). It will never be observable again in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  18  6.32  -64 48.3   3.155   2.513    42   14.9   5:37 (330,-31)  
Jan.  7  18 37.49  -65  0.1   3.226   2.593    42   15.1   5:38 (330,-31)

* 117P/Helin-Roman-Alu 1

Now it is 14.8 mag (Dec. 8, ATLAS Chile). It will be unobservable soon. But it will be observable at 15 mag again in 2023. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  20 51.43  -24 40.6   3.971   3.161    30   15.0  18:28 ( 55,  5)  
Jan.  7  21  2.46  -23 54.1   4.026   3.170    25   15.0  18:33 ( 59,  2)

* C/2020 R7 ( ATLAS )

Now it is 15.1 mag (Oct. 26, Thomas Lehmann). The brightness evolution is slower than originally expected. It stays 14-15 mag for a long time. Now it is not observable. It will be observable in early January in the Northern Hemisphere, or in early February in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  17 42.98  -12 27.4   4.065   3.138    17   15.0   5:37 (285, -1)  
Jan.  7  17 47.56  -11 10.7   4.046   3.162    22   15.0   5:38 (287,  4)

* 119P/Parker-Hartley

Now it is 15.1 mag (Dec. 26, Chris Wyatt). It will be fading after this, and it will be fainter than 18 mag in spring. It is observable in good 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)  
Dec. 31   7 58.27   21 51.9   1.570   2.522   161   15.2   1:23 (  0, 77)  
Jan.  7   7 53.05   22 31.3   1.567   2.541   170   15.3   0:50 (  0, 77)

* C/2021 S3 ( PanSTARRS )

Now it is 15.5 mag (Dec. 24, Martin Masek). It is expected to brighten up to 7 mag in early 2024. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it stays low in 2022. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   5 43.43  -38 33.2   4.563   5.085   116   15.4  23:03 (  0, 16)  
Jan.  7   5 37.75  -38 34.5   4.521   5.020   115   15.3  22:30 (  0, 16)

* C/2021 G2 ( ATLAS )

Now it is 15.8 mag (Dec. 15, ATLAS South Africa). It will brighten up to 13 mag from 2024 to 2025. It is observable in excllent condition in the Southern Hemisphere. It locates low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   9 12.15  -38 23.3   6.414   6.795   108   15.4   2:36 (  0, 17)  
Jan.  7   9 10.29  -38 49.2   6.323   6.761   112   15.3   2:07 (  0, 16)

* 77P/Longmore

Now it is 16.4 mag (Dec. 14, Ken-ichi Kadota). It will brighten rapidly up to 14 mag in spring. In the Southern Hemisphere, appearing in the morning sky. It will be observable in excellent condition in spring. In the Northern Hemisphere, it is observable in good condition in winter, but it becomes somewhat low in spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  13 44.89   -5 41.6   2.533   2.428    72   15.6   5:37 (328, 44)  
Jan.  7  13 53.45   -7 13.2   2.436   2.417    77   15.5   5:38 (335, 44)

* 61P/Shajn-Schaldach

Now it is 15.2 mag (Dec. 12, W. Pei). It stays observable in good condition for a long time. But it will be fading after this, and it will be fainter than 18 mag in spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   1 39.41    2 46.4   1.718   2.189   104   15.6  19:01 (  0, 58)  
Jan.  7   1 47.00    3 42.5   1.807   2.202   100   15.8  18:41 (  0, 59)

* C/2020 S4 ( PanSTARRS )

Now it is 15.4 mag (Dec. 15, Masayoshi Yoshimi). It stays 16 mag and observable in good condition until spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   9 36.67   20  1.4   2.589   3.391   138   15.8   3:01 (  0, 75)  
Jan.  7   9 36.90   20 54.1   2.525   3.384   145   15.8   2:34 (  0, 76)

* P/2022 L3 ( ATLAS )

It brightened up to 14.1 mag in autumn (Nov. 14, Thomas Lehmann). Now it is fading. It has already faded down to 16.0 mag (Dec. 13, ATLAS-HKO, Haleakala). It stays observable in excellent condition for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   2  1.88   27 50.3   1.860   2.480   118   15.8  19:24 (  0, 83)  
Jan.  7   2  5.72   28 29.5   1.950   2.494   112   15.9  19:00 (  0, 84)

* C/2020 Y2 ( ATLAS )

Now it is 14.9 mag (Dec. 26, Chris Wyatt). It was expected to brighten up to 13 mag in spring. But actually, it was fainter than originally expected. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it stays extremely low for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   2 33.62  -41 13.2   3.447   3.653    94   15.9  19:54 (  0, 14)  
Jan.  7   2 26.30  -38 41.0   3.555   3.686    89   16.0  19:19 (  0, 17)

* 285P/LINEAR

It brightened by 6 mag in outburst in early August up to 14.6 mag (Aug. 13, ATLAS-MLO, Mauna Loa). Now it is fading. It has already faded down to 16.8 mag (Dec. 12, A. Diepvens). It will be extremely low after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  22  8.37   -8 25.4   2.142   1.724    52   16.0  18:28 ( 53, 30)  
Jan.  7  22 27.46   -8  3.1   2.187   1.720    49   16.1  18:33 ( 56, 28)

* 204P/LINEAR-NEAT

Now it is 17.2 mag (Dec. 21, Catalina Sky Survey). It will brighten rapidly, and it will be observable at 16 mag in good condition in winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  10 14.25   14 35.3   1.097   1.875   128   16.3   3:38 (  0, 69)  
Jan.  7  10 17.40   15  7.2   1.060   1.889   135   16.2   3:14 (  0, 70)

* 408P/2020 M7 ( Novichonok-Gerke )

Now it is 16.2 mag (Dec. 12, Ken-ichi Kadota). It will be observable at 16-17 mag in excellent condition from autumn to winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   4  3.17   -1 33.8   2.729   3.492   134   16.3  21:24 (  0, 54)  
Jan.  7   4  1.49   -1 20.3   2.801   3.496   128   16.3  20:55 (  0, 54)

* 237P/LINEAR

Appearing in the morning sky. It will brighten very rapidly. It is expected to be observable at 11 mag in excellent condition from spring to summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  15 31.76  -24  8.7   2.871   2.249    42   16.7   5:37 (314, 14)  
Jan.  7  15 47.55  -24 39.9   2.791   2.225    46   16.3   5:38 (317, 16)

* C/2018 U1 ( Lemmon )

It was observed at 15 mag from 2021 to 2022. Now it is fading. In the Southern Hemisphere, it stays observable in excellent condition for a long time, although it became extremely low temporarily in November. In the Northern Hemiphere, it is not observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  15 15.36  -59 22.8   6.508   5.934    50   16.3   5:37 (338,-12)  
Jan.  7  15 17.45  -60 30.7   6.471   5.962    55   16.3   5:38 (342,-11)

* C/2022 E2 ( ATLAS )

Now it is 16.3 mag (Dec. 22, ATLAS South Africa). It is expected to brighten up to 12-13 mag from 2024 to 2025. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  10 23.94  -20  3.0   6.001   6.407   110   16.5   3:48 (  0, 35)  
Jan.  7  10 20.02  -19 54.7   5.854   6.363   117   16.4   3:16 (  0, 35)

* C/2021 C5 ( PanSTARRS )

Now it is 17.7 mag (July 9, ATLAS Chile). It will brighten up to 16 mag in 2023. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it will never be observable again. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  14 29.69  -60  2.5   3.707   3.267    56   16.5   5:37 (344, -9)  
Jan.  7  14 48.26  -61 57.0   3.658   3.259    58   16.4   5:38 (346,-10)

* (65803) Didymos

Due to the DART spacecraft impact to its satellite Dimorphos on Sept. 26, the cometary activity was detected. It brightened up to 12.9 mag (Sept. 28, John Drummond). It is fading after that. It has already faded down to 15.9 mag (Oct. 29, Katsumi Yoshimoto). It stays observable in good condition for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   7 45.67   29 14.1   0.259   1.235   163   16.6   1:11 (  0, 84)  
Jan.  7   7 34.05   30 10.7   0.291   1.272   170   16.7   0:32 (  0, 85)

* C/2022 A3 ( Lemmon-ATLAS )

Now it is 16.9 mag (Dec. 12, D. Buczynski). It stays observable at 16 mag for a long time from early 2023 to early 2024. In the Northern Hemisphere, it is observable only until 2023 spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  10 20.51    0 43.9   3.807   4.406   121   16.8   3:45 (  0, 56)  
Jan.  7  10 14.89   -0 13.6   3.681   4.374   129   16.7   3:12 (  0, 55)

* C/2019 E3 ( ATLAS )

Now it is 16.7 mag (Dec. 20, ATLAS South Africa). Very far object. It stays 17 mag for a long time from 2021 to 2026. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable at all. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   6 50.62  -76 29.2  10.573  10.453    80   16.9   0:14 (  0,-22)  
Jan.  7   6 34.78  -76 34.6  10.559  10.447    80   16.9  23:24 (  0,-22)

* 402P/2020 Q3 ( LINEAR )

It brightened up to 15.3 mag in last winter (Jan. 12, 2022, H. Nohara). Now it is fading. It has already faded down to 17.0 mag (Dec. 1, ATLAS-HKO, Haleakala). It will be observable at 17 mag in good condition in next winter. It locates low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  10 25.99   22 19.3   3.805   4.478   128   17.0   3:50 (  0, 77)  
Jan.  7  10 25.32   23  9.7   3.745   4.496   135   17.0   3:22 (  0, 78)

* P/2021 N2 ( Fuls )

It brightened very rapidly up to 15.5 mag from last autumn to last winter (Nov. 2, 2021, Toshihiko Ikemura, Hirohisa Sato). Now it is fading slowly. It has already faded down to 16.9 mag (Dec. 18, ATLAS Chile). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   6 27.73    9 23.8   3.513   4.474   166   17.2  23:48 (  0, 64)  
Jan.  7   6 23.86    9 22.4   3.545   4.494   162   17.2  23:17 (  0, 64)

* 263P/Gibbs

Now it is 17.9 mag (Dec. 21, Catalina Sky Survey). It brightens rapidly, and it is observable at 16.5 mag in good condition from January to March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  10 14.56   16 14.3   0.418   1.288   129   17.5   3:38 (  0, 71)  
Jan.  7  10 42.51   18  3.7   0.387   1.268   130   17.2   3:38 (  0, 73)

* 94P/Russell 4

Now it is 18.1 mag (Dec. 14, Ken-ichi Kadota). It brightens rapidly, and it is observable at 16.5 mag in good condition in spring. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   8 52.29   24 58.3   1.527   2.426   149   17.4   2:17 (  0, 80)  
Jan.  7   8 49.29   25 38.4   1.472   2.408   157   17.2   1:46 (  0, 81)

* C/2020 F2 ( ATLAS )

Now it is 17.7 mag (Dec. 15, ATLAS-HKO, Haleakala). It stays 17 mag and observable in good condition for a long time until 2023 summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  13 36.01    4 33.2   9.010   8.871    78   17.2   5:37 (323, 54)  
Jan.  7  13 35.44    4 52.8   8.890   8.876    85   17.2   5:38 (335, 57)

* 244P/Scotti

Now it is 17.6 mag (Dec. 22, F. Jackson). It is observable at 17 mag in good condition in winter. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   6  5.61   26 24.2   2.948   3.924   171   17.2  23:26 (  0, 81)  
Jan.  7   6  1.00   26 22.7   2.971   3.925   163   17.2  22:54 (  0, 81)

* C/2019 O3 ( Palomar )

Now it is 17.5 mag (Dec. 15, P.-J. Dekelver). 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)  
Dec. 31  17 54.35   63 44.8   9.605   9.610    87   17.3   5:37 (212, 33)  
Jan.  7  17 59.33   64 11.4   9.614   9.625    87   17.3   5:38 (212, 36)

* 22P/Kopff

It brightened up to 11.1 mag in 2022 spring (May 21, Thomas Lehmann). Now it is fading. It has already faded down to 18.1 mag (Dec. 6, iTelescope Observatory, Siding Spring). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   0 59.30    0 43.0   2.693   2.946    94   17.3  18:28 (  3, 56)  
Jan.  7   1  4.22    1 26.3   2.832   2.986    89   17.5  18:33 ( 15, 56)

* C/2014 UN271 ( Bernardinelli-Bernstein )

Now it is 17.2 mag (Dec. 3, ATLAS Chile). Very large comet. It is expected to brighten up to 14 mag in 2031. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until 2030. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   2 29.41  -60 47.8  18.259  18.153    82   17.4  19:50 (  0, -6)  
Jan.  7   2 28.44  -60 33.9  18.279  18.127    79   17.4  19:22 (  0, -5)

* 107P/(4015) Wilson-Harrington

Now it is 17.0 mag (Nov. 26, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   7 33.88   19 48.0   0.864   1.836   166   17.5   0:59 (  0, 75)  
Jan.  7   7 21.62   20  2.0   0.912   1.894   176   17.4   0:19 (  0, 75)

* C/2020 F5 ( MASTER )

It brightened up to 14 mag in 2021. Now it is fading. It has already faded down to 17.5 mag (Dec. 20, Martin Masek). It will be fainter than 18 mag in March. It will be unobservable soon in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  23 20.47   15 42.9   6.816   6.698    78   17.4  18:28 ( 58, 60)  
Jan.  7  23 22.58   15 59.4   6.962   6.737    72   17.5  18:33 ( 67, 54)

* 395P/2020 H1 ( Catalina-NEAT )

Now it is 17.3 mag (Nov. 25, Toshihiko Ikemura, Hirohisa Sato). It continued brightening even after the perihelion passage. It will be fading after this, and it will be fainter than 18 mag in February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  23 19.58   -2  5.3   4.702   4.478    70   17.5  18:28 ( 40, 45)  
Jan.  7  23 24.61   -1 38.0   4.817   4.493    65   17.6  18:33 ( 48, 42)

* C/2020 H6 ( ATLAS )

Now it is 17.1 mag (Dec. 14, A. Diepvens). Fading slowly. In the Southern Hemisphere, it is not observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  17 27.03   40 17.2   6.225   5.887    65   17.5   5:37 (239, 30)  
Jan.  7  17 34.90   40 59.9   6.230   5.919    67   17.6   5:38 (240, 34)

* C/2021 S4 ( Tsuchinshan )

Now it is 17.6 mag (Dec. 13, ATLAS-HKO, Haleakala). It stays 17 mag for a long time from 2023 to 2024. It is observable in good 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)  
Dec. 31   2 20.14   28  3.0   6.529   7.101   122   17.6  19:42 (  0, 83)  
Jan.  7   2 20.15   27 58.0   6.611   7.086   115   17.6  19:14 (  0, 83)

* 157P/Tritton

It brightened up to 16.1 mag in autumn (Sept. 23, Michael Jager). Then it is fading very rapidly. It has already faded down to 18.0 mag (Nov. 26, H. Nohara). It will be getting higher after this also in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  11 15.91   -6  5.6   1.399   1.924   106   17.6   4:40 (  0, 49)  
Jan.  7  11 17.95   -7 35.1   1.365   1.962   112   17.6   4:14 (  0, 47)

* 44P/Reinmuth 2

Now it is 16.9 mag (Dec. 18, M. Iozzi). 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)  
Dec. 31   2 53.99   22 16.5   2.068   2.788   128   17.6  20:15 (  0, 77)  
Jan.  7   2 55.48   22  0.0   2.174   2.817   121   17.8  19:49 (  0, 77)

* C/2021 QM45 ( PanSTARRS )

Now it is 17.3 mag (Dec. 3, Ken-ichi Kadota). In the Northern Hemisphere, it stays observable at 17 mag in good condition for a long time until winter. In the Southern Hemisphere, it stays extremely low for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   8  6.42   51  4.8   2.243   3.116   147   17.7   1:31 (180, 74)  
Jan.  7   8  0.70   50 59.5   2.260   3.149   149   17.7   0:58 (180, 74)

* 246P/NEAT

Now it is 16.5 mag (Dec. 12, ATLAS Chile). It brightened up to 14 mag from 2020 to 2021. Now it is fading slowly. It will be fainter than 18 mag soon. But it may stay bright for some more time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   0 13.54  -14 26.2   4.278   4.197    78   17.7  18:28 ( 17, 39)  
Jan.  7   0 17.22  -13 34.6   4.396   4.213    72   17.8  18:33 ( 25, 38)

* P/2021 V2 ( Fuls )

Now it is 17.6 mag (Dec. 2, ATLAS Chile). It is observable at 17.5 mag in good condition in winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   9  2.86    0  8.3   2.705   3.500   138   17.7   2:27 (  0, 55)  
Jan.  7   9  0.81   -0  9.6   2.649   3.498   144   17.7   1:58 (  0, 55)

* 180P/NEAT

Now it is 19.3 mag (Dec. 23, Mt. Lemmon Survey). It is observable at 17 mag from winter to spring. It locates low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   9 50.45   30  6.0   1.980   2.781   136   17.9   3:15 (  0, 85)  
Jan.  7   9 49.88   31 13.9   1.910   2.762   143   17.7   2:47 (  0, 86)

* C/2019 F1 ( ATLAS-Africano )

It brightened up to 14.2 mag in 2021 summer (July 18, 2021, Taras Prystavski). Now it is fading. It has already faded down to 17.3 mag (Dec. 22, ATLAS South Africa). In the Southern Hemisphere, it stays observable in good condition for a long time. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31   1 13.99  -19  5.2   5.894   5.979    90   17.7  18:35 (  0, 36)  
Jan.  7   1 14.38  -18  6.5   6.043   6.024    84   17.8  18:33 (  7, 37)

* 211P/Hill

Now it is 18.9 mag (Nov. 24, Catalina Sky Survey). It brightens up to 17.5 mag from January to February. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  11 46.58   14 59.8   1.908   2.397   107   17.8   5:10 (  0, 70)  
Jan.  7  11 52.44   15 46.9   1.841   2.408   113   17.8   4:48 (  0, 71)

* C/2020 J1 ( SONEAR )

It brightened up to 12.3 mag from spring to summer in 2021 (June 15, 2021, Marco Goiato). Now it is fading. It has already faded down to 18.2 mag (Nov. 21, D. Buczynski). It will be fainter than 18 mag in January. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec. 31  12 43.06   35 44.4   6.079   6.365   102   17.8   5:37 (262, 84)  
Jan.  7  12 41.22   36 52.8   6.027   6.411   108   17.9   5:37 (180, 88)

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