Weekly Information about Bright Comets (2023 Jan. 21: North)

Japanese version
Home page
 Updated on January 21, 2023
Last week South Next week

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.

---------------------------------------------------------------------

* 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)  
Jan. 21  21  0.68  -33 56.0   1.227   0.418    17    8.6  18:45 ( 60,-16)  
Jan. 28  21 19.18  -24 10.8   0.977   0.186    10    3.9  18:51 ( 71,-13)

* C/2022 E3 ( ZTF )

Now it is very bright as 6.0 mag (Jan. 19, Virgilio Gonano). It will approach to Earth down to 0.29 a.u. in February, and it brightens 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)  
Jan. 21  15 32.70   51 13.9   0.479   1.120    93    5.9   5:37 (224, 64)  
Jan. 28  13 59.07   73 53.6   0.325   1.139   110    5.1   5:34 (180, 52)

* C/2017 K2 ( PanSTARRS )

Now it is very bright as 8.0 mag (Jan. 15, Marco Goiato). 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 became low temporarily from November to December. In the Northern Hemisphere, it is not observable until summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  21  7.00  -70 30.4   2.295   1.844    51    7.8  18:45 ( 23,-31)  
Jan. 28  22 12.35  -70 45.2   2.263   1.866    54    7.8  18:51 ( 21,-28)

* C/2022 A2 ( PanSTARRS )

It brightened very rapidly. Now it is very bright as 9.9 mag (Jan. 16, Osamu Miyazaki). It stays 9-10 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 June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  18  3.59   57 43.4   1.617   1.774    82    9.5   5:37 (221, 41)  
Jan. 28  19  5.63   58 42.5   1.646   1.757    79    9.5   5:34 (219, 37)

* C/2020 V2 ( ZTF )

Now it is 10.6 mag (Jan. 20, Osamu Miyazaki). It stays bright as 10 mag for a long time until autumn. In the Northern Hemisphere, it stays observable in good condition until autumn. In the Southern Hemipshere, it stays unobservable until summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   1 28.53   64 46.5   2.122   2.543   103    9.7  18:45 (164, 58)  
Jan. 28   1 28.44   59 34.0   2.184   2.506    97    9.7  18:51 (152, 60)

* C/2022 U2 ( ATLAS )

It brightened very rapidly. Now it is very bright as 11.5 mag (Jan. 10, Katsumi Yoshimoto). It stays 11-12 mag until February. 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)  
Jan. 21   3 12.33   68 55.7   0.580   1.332   114   11.3  19:17 (180, 57)  
Jan. 28   4 13.43   58 40.8   0.564   1.344   117   11.3  19:48 (180, 67)

* 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 11.1 mag still now (Jan. 2, Osamu Miyazaki). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   9 45.04  -33 27.8   4.279   4.871   121   11.5   1:46 (  0, 21)  
Jan. 28   9 40.32  -34  9.0   4.274   4.911   125   11.5   1:14 (  0, 21)

* 81P/Wild 2

Now it is 11.6 mag (Jan. 20, Osamu Miyazaki). It stays 11-12 mag until spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  15 25.34  -15 53.7   1.743   1.639    67   11.6   5:37 (328, 33)  
Jan. 28  15 43.15  -16 45.2   1.707   1.655    70   11.7   5:34 (331, 33)

* 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)  
Jan. 21  18 47.11  -28 31.6   4.152   3.250    20   11.7   5:37 (300, -7)  
Jan. 28  18 55.12  -29 43.2   4.081   3.228    26   11.7   5:34 (303, -5)

* C/2019 U5 ( PanSTARRS )

Now it is 12.4 mag (Dec. 23, Jose Guilherme de S. Aguiar). It stays 12 mag until summer. It stays observable in good condition for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  13 43.49    2  2.6   3.424   3.676    96   12.4   5:37 (357, 57)  
Jan. 28  13 38.37    1 32.4   3.285   3.666   104   12.3   5:12 (  0, 56)

* C/2022 P1 ( NEOWISE )

Now it is bright as 11.4 mag (Dec. 14, 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)  
Jan. 21  19 26.26  -38  6.9   2.626   1.738    20   12.3   5:37 (304,-19)  
Jan. 28  19 25.63  -38 14.9   2.612   1.775    25   12.6   5:34 (307,-15)

* C/2019 T4 ( ATLAS )

Now it is bright as 12.9 mag (Jan. 2, Hiroshi Abe). 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)  
Jan. 21  15 22.76    1 17.7   4.818   4.635    73   12.9   5:37 (318, 48)  
Jan. 28  15 27.55    2  9.0   4.740   4.659    79   12.9   5:34 (324, 51)

* 118P/Shoemaker-Levy 4

Now it is 12.8 mag (Jan. 10, Masayoshi Yoshimi). 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)  
Jan. 21   8 36.70   11 54.6   0.917   1.894   169   13.0   0:39 (  0, 67)  
Jan. 28   8 32.69   13 17.7   0.927   1.910   174   13.1   0:07 (  0, 68)

* 71P/Clark

It brightens 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)  
Jan. 21  18 43.19  -25 54.7   2.470   1.589    20   13.3   5:37 (299, -5)  
Jan. 28  19  6.72  -25 49.2   2.452   1.589    22   13.3   5:34 (299, -4)

* 29P/Schwassmann-Wachmann 1

It brightened in major outburst in late November. Now it is bright as 11.6 mag (Jan. 18, Toshihiko Ikemura, Hirohisa Sato). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   6 26.68   29 17.2   5.159   6.064   154   13.4  22:25 (  0, 84)  
Jan. 28   6 23.64   29 10.8   5.214   6.066   147   13.5  21:54 (  0, 84)

* C/2021 Y1 ( ATLAS )

Now it is 13.9 mag (Jan. 13, P. Lindner). The brightness evolution is slower than originally predicted. It stays 14 mag until 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)  
Jan. 21   3 17.69   -9 38.3   1.941   2.354   102   13.5  19:16 (  0, 45)  
Jan. 28   3 15.66  -11 17.6   2.013   2.314    94   13.6  18:51 (  1, 44)

* 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)  
Jan. 21  22  5.86  -56 23.1   1.245   0.838    42   14.2  18:45 ( 33,-19)  
Jan. 28  22 37.23  -59 41.5   1.135   0.847    46   14.1  18:51 ( 30,-21)

* C/2021 X1 ( Maury-Attard )

Now it is 14.7 mag (Jan. 13, ATLAS Chile). 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)  
Jan. 21   3  7.48  -18 12.9   3.197   3.450    96   14.4  19:05 (  0, 37)  
Jan. 28   2 58.75  -16 42.2   3.298   3.428    89   14.4  18:51 (  7, 38)

* 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 15.7 mag (Jan. 13, ATLAS South Africa). 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)  
Jan. 21   7 47.56  -37 40.2   2.590   3.222   122   14.4  23:44 (  0, 17)  
Jan. 28   7 33.02  -35 14.5   2.631   3.285   124   14.6  23:02 (  0, 20)

* C/2021 T4 ( Lemmon )

Now it is 14.8 mag (Jan. 4, iTelescope Observatory, Siding Spring). 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)  
Jan. 21   0 25.46  -13 32.1   3.247   2.902    61   14.7  18:45 ( 41, 31)  
Jan. 28   0 23.36  -13 19.3   3.299   2.832    53   14.6  18:51 ( 49, 26)

* 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 12.4 mag still now (Dec. 23, Ken-ichi Kadota). 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)  
Jan. 21  23 51.83   -8 59.3   2.485   2.075    54   14.9  18:45 ( 52, 30)  
Jan. 28   0  4.95   -7 11.0   2.611   2.136    51   15.3  18:51 ( 57, 28)

* 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. Appearing in the morning sky in the Northern Hemisphere. It will appear in the morning sky in early February also in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  17 55.90   -8 25.4   3.976   3.213    34   15.0   5:37 (292, 15)  
Jan. 28  17 59.52   -6 55.6   3.925   3.240    40   15.0   5:34 (294, 20)

* C/2021 S3 ( PanSTARRS )

Now it is 15.2 mag (Jan. 6, ATLAS South Africa). 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. It locates low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   5 27.37  -38  6.4   4.458   4.889   110   15.1  21:25 (  0, 17)  
Jan. 28   5 22.99  -37 38.2   4.436   4.823   107   15.1  20:53 (  0, 17)

* 237P/LINEAR

Appearing in the morning sky. Now it is 16.0 mag (Jan. 7, Ken-ichi Kadota). 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)  
Jan. 21  16 19.57  -25 22.8   2.624   2.180    53   15.5   5:37 (322, 18)  
Jan. 28  16 35.70  -25 33.4   2.539   2.158    56   15.1   5:34 (323, 19)

* 77P/Longmore

Now it is 16.1 mag (Jan. 12, Catalina Sky Survey). It will brighten rapidly up to 14 mag and 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)  
Jan. 21  14  9.02  -10 15.7   2.242   2.397    86   15.2   5:37 (349, 44)  
Jan. 28  14 15.84  -11 46.9   2.145   2.388    91   15.1   5:34 (355, 43)

* C/2021 G2 ( ATLAS )

Now it is 15.7 mag (Dec. 31, iTelescope Observatory, Siding Spring). 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)  
Jan. 21   9  5.44  -39 22.6   6.159   6.694   119   15.2   1:07 (  0, 16)  
Jan. 28   9  2.61  -39 28.9   6.089   6.661   121   15.1   0:37 (  0, 15)

* 117P/Helin-Roman-Alu 1

Now it is 14.8 mag (Dec. 8, ATLAS Chile). Now it is not observable. It will become observable again in late March in the Southern Hemisphere, or in late May in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  21 24.44  -22 15.3   4.115   3.190    17   15.1  18:45 ( 66, -5)  
Jan. 28  21 35.33  -21 23.5   4.149   3.200    13   15.2  18:51 ( 70, -9)

* 119P/Parker-Hartley

Now it is 14.3 mag (Jan. 3, Masayoshi Yoshimi). 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)  
Jan. 21   7 41.76   23 46.4   1.600   2.579   172   15.4  23:39 (  0, 79)  
Jan. 28   7 36.53   24 18.8   1.638   2.599   164   15.5  23:07 (  0, 79)

* C/2020 S4 ( PanSTARRS )

Now it is 15.2 mag (Jan. 13, ATLAS-HKO, Haleakala). It stays 15-16 mag and observable in good condition until spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   9 35.08   22 51.3   2.433   3.374   160   15.7   1:37 (  0, 78)  
Jan. 28   9 33.24   23 52.5   2.407   3.372   166   15.7   1:07 (  0, 79)

* C/2020 Y2 ( ATLAS )

Now it is 15.5 mag (Jan. 13, ATLAS Chile). It was expected to brighten up to 13 mag in 2022 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)  
Jan. 21   2 17.09  -33 42.9   3.793   3.757    80   15.8  18:45 (  7, 21)  
Jan. 28   2 14.69  -31 20.8   3.919   3.793    75   15.9  18:51 ( 15, 22)

* 61P/Shajn-Schaldach

It brightened up to 14.6 mag in autumn (Oct. 19, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. It has already faded down to 17.0 mag (Jan. 11, ATLAS Chile). It will be fainter than 18 mag in spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   2  4.46    5 44.4   1.992   2.231    90   16.1  18:45 ( 20, 59)  
Jan. 28   2 14.19    6 48.2   2.087   2.248    86   16.2  18:51 ( 32, 58)

* 204P/LINEAR-NEAT

It brightened rapidly. Now it is 16.6 mag (Jan. 13, ATLAS-HKO, Haleakala). It is observable at 16 mag in good condition in winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  10 18.40   16 41.5   1.008   1.922   149   16.1   2:20 (  0, 72)  
Jan. 28  10 16.45   17 39.4   0.996   1.941   156   16.1   1:50 (  0, 72)

* C/2022 E2 ( ATLAS )

Now it is 16.0 mag (Jan. 10, ATLAS Chile). 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)  
Jan. 21  10 10.38  -19 19.6   5.588   6.276   130   16.2   2:12 (  0, 36)  
Jan. 28  10  4.76  -18 51.7   5.473   6.232   137   16.1   1:39 (  0, 36)

* 285P/LINEAR

It brightened by 6 mag in outburst in early August up to 14.6 mag (Aug. 13, ATLAS-MLO, Mauna Loa). It has already faded down to 16.7 mag (Dec. 25, Catalina Sky Survey). It will be extremely low after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  23  5.80   -6 55.8   2.279   1.722    44   16.1  18:45 ( 62, 24)  
Jan. 28  23 24.93   -6 12.7   2.327   1.727    42   16.2  18:51 ( 66, 22)

* 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 15.5 mag (Jan. 4, Ken-ichi Kadota). It stays observable in excellent condition for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   2 17.24   29 51.6   2.141   2.526   101   16.2  18:45 ( 52, 82)  
Jan. 28   2 24.70   30 34.5   2.241   2.544    96   16.3  18:51 ( 73, 78)

* 116P/Wild 4

It brightened up to 12.7 mag in last year (Feb. 27, 2022, Jose Guilherme de S. Aguiar). Now it is fading. Appearing in the morning sky. In the Southern Hemisphere, it stays observable until summer when it becomes fainter than 18 mag. It locates low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  17 45.67  -25 37.6   3.302   2.542    33   16.2   5:37 (307,  5)  
Jan. 28  17 59.16  -25 45.6   3.272   2.565    37   16.3   5:34 (309,  7)

* 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. In the Northern Hemiphere, it is not observable after this. It has not been observed since late September. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  15 19.40  -62 54.0   6.379   6.019    64   16.3   5:37 (348,-10)  
Jan. 28  15 18.88  -64  8.7   6.326   6.047    69   16.3   5:34 (351,-10)

* C/2021 C5 ( PanSTARRS )

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. It has not been observed since 2022 July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  15 29.17  -65 30.5   3.563   3.248    63   16.4   5:37 (348,-13)  
Jan. 28  15 51.65  -67  7.2   3.516   3.245    66   16.3   5:34 (349,-14)

* C/2022 A3 ( Lemmon-ATLAS )

Now it is 16.6 mag (Jan. 13, ATLAS South Africa). 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)  
Jan. 21  10  0.67   -2  3.1   3.468   4.311   145   16.5   2:02 (  0, 53)  
Jan. 28   9 52.23   -2 53.8   3.385   4.281   152   16.5   1:27 (  0, 52)

* 408P/2020 M7 ( Novichonok-Gerke )

Now it is 16.5 mag (Jan. 1, Masayoshi Yoshimi). It is 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)  
Jan. 21   4  0.80   -0 35.7   2.966   3.506   115   16.5  19:59 (  0, 54)  
Jan. 28   4  1.81   -0  6.5   3.058   3.511   109   16.6  19:33 (  0, 55)

* C/2022 L2 ( ATLAS )

Now it is 17.2 mag (Dec. 12, D. Buczynski). It is expected to brighten up to 11.5 mag in 2024 spring. It stays observable in good condition for a long time. At the high light, it will be observable in excellent condition in the Southern Hemisphere, but it will be low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  18 26.01   14 28.1   5.558   4.885    42   16.6   5:37 (268, 23)  
Jan. 28  18 28.69   14 32.2   5.464   4.833    46   16.5   5:34 (271, 27)

* 263P/Gibbs

Now it is 17.0 mag (Jan. 7, Ken-ichi Kadota). 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)  
Jan. 21  11 40.29   22 17.4   0.349   1.242   131   16.7   3:41 (  0, 77)  
Jan. 28  12  7.87   24 25.1   0.341   1.237   131   16.6   3:41 (  0, 79)

* 94P/Russell 4

Now it is 17.5 mag (Jan. 13, ATLAS-HKO, Haleakala). 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)  
Jan. 21   8 39.94   27  1.3   1.399   2.375   170   16.9   0:42 (  0, 82)  
Jan. 28   8 34.24   27 39.0   1.382   2.359   170   16.7   0:09 (  0, 83)

* C/2019 E3 ( ATLAS )

Now it is 16.4 mag (Jan. 1, iTelescope Observatory, Siding Spring). Very far object. It stays 16-17 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)  
Jan. 21   6  3.98  -76 20.4  10.532  10.436    81   16.9  21:59 (  0,-21)  
Jan. 28   5 50.07  -76  1.8  10.519  10.430    82   16.9  21:18 (  0,-21)

* 199P/Shoemaker 4

Appearing in the morning sky. It stays observable at 14-15 mag from spring to autumn. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  16 58.28  -11 20.6   3.821   3.228    46   17.1   5:37 (304, 23)  
Jan. 28  17  7.82  -11 48.4   3.729   3.208    51   17.0   5:34 (308, 26)

* C/2022 W3 ( Leonard )

Now it is 17.3 mag (Jan. 11, Ken-ichi Kadota). It will brighten up to 13 mag in summer. In the Northern Hemisphere, it stays observable in good condition for a long time. 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. 21  10 20.97   64 56.5   1.749   2.500   130   17.2   2:23 (180, 60)  
Jan. 28   9 57.11   70 15.7   1.707   2.429   126   17.0   1:33 (180, 55)

* 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 (Jan. 2, Purple Mountain Observatory, XuYi Station). 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)  
Jan. 21  10 21.84   24 58.2   3.658   4.532   149   17.0   2:23 (  0, 80)  
Jan. 28  10 19.16   25 53.9   3.634   4.550   155   17.0   1:53 (  0, 81)

* 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 16.8 mag (Jan. 11, ATLAS Chile). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   6 17.04    9 28.6   3.650   4.534   150   17.1  22:15 (  0, 64)  
Jan. 28   6 14.35    9 35.7   3.723   4.555   143   17.2  21:45 (  0, 65)

* C/2020 F2 ( ATLAS )

Now it is 17.1 mag (Jan. 3, ATLAS Chile). 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)  
Jan. 21  13 33.15    5 40.4   8.651   8.885   100   17.2   5:34 (  0, 61)  
Jan. 28  13 31.40    6  8.2   8.536   8.890   108   17.1   5:05 (  0, 61)

* 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)  
Jan. 21  17 50.28   42 39.9   6.238   5.983    70   17.2   5:37 (241, 41)  
Jan. 28  17 57.71   43 36.7   6.242   6.015    72   17.2   5:34 (241, 45)

* 246P/NEAT

Now it is 16.5 mag (Jan. 1, ATLAS Chile). It brightened up to 14 mag from 2020 to 2021. Now it is fading slowly. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   0 25.94  -11 48.2   4.623   4.246    61   17.2  18:45 ( 42, 33)  
Jan. 28   0 30.90  -10 54.1   4.729   4.262    56   17.3  18:51 ( 49, 29)

* 244P/Scotti

Now it is 17.5 mag (Jan. 18, Toshihiko Ikemura, Hirohisa Sato). 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)  
Jan. 21   5 53.29   26 16.1   3.059   3.928   148   17.3  21:51 (  0, 81)  
Jan. 28   5 50.51   26 11.6   3.122   3.930   140   17.3  21:21 (  0, 81)

* C/2019 O3 ( Palomar )

Now it is 17.1 mag (Jan. 9, D. Buczynski). 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. 21  18  9.02   65 17.8   9.634   9.657    88   17.3   5:37 (211, 41)  
Jan. 28  18 13.61   65 57.2   9.646   9.674    88   17.3   5:34 (209, 43)

* C/2014 UN271 ( Bernardinelli-Bernstein )

Now it is 17.4 mag (Jan. 9, ATLAS South Africa). 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)  
Jan. 21   2 27.55  -60  2.6  18.310  18.077    74   17.4  18:45 (  2, -5)  
Jan. 28   2 27.64  -59 45.9  18.320  18.052    72   17.4  18:51 (  7, -5)

* (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 has already returned to its original brightness. It stays observable in good condition for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21   7 16.77   30 50.7   0.375   1.348   163   17.5  23:14 (  0, 86)  
Jan. 28   7 12.32   30 44.2   0.427   1.387   156   18.0  22:43 (  0, 86)

* C/2021 S4 ( Tsuchinshan )

Now it is 17.4 mag (Jan. 18, Toshihiko Ikemura, Hirohisa Sato). 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)  
Jan. 21   2 21.70   27 53.3   6.792   7.057   101   17.6  18:45 ( 38, 81)  
Jan. 28   2 23.23   27 54.0   6.887   7.043    95   17.6  18:51 ( 63, 76)

* C/2020 F5 ( MASTER )

It brightened up to 14 mag in 2021. Now it is fading. It has already faded down to 17.4 mag (Jan. 7, W. Hasubick). It will be fainter than 18 mag in March. It is already unobservable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  23 27.77   16 40.3   7.241   6.816    60   17.6  18:45 ( 81, 42)  
Jan. 28  23 30.77   17  4.7   7.372   6.856    55   17.7  18:51 ( 86, 36)

* P/2021 V2 ( Fuls )

Now it is 17.8 mag (Dec. 26, Ken-ichi Kadota). 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)  
Jan. 21   8 54.96   -0 25.1   2.571   3.497   156   17.7   0:57 (  0, 54)  
Jan. 28   8 51.47   -0 22.6   2.551   3.497   160   17.7   0:26 (  0, 55)

* 211P/Hill

Now it is 18.1 mag (Dec. 30, Ken-ichi Kadota). 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)  
Jan. 21  12  0.62   17 52.5   1.723   2.433   125   17.7   4:02 (  0, 73)  
Jan. 28  12  2.73   19  9.4   1.675   2.446   132   17.7   3:36 (  0, 74)

* 395P/2020 H1 ( Catalina-NEAT )

Now it is 17.9 mag (Dec. 25, Catalina Sky Survey). 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)  
Jan. 21  23 35.65   -0 35.8   5.033   4.522    53   17.7  18:45 ( 62, 33)  
Jan. 28  23 41.58   -0  1.5   5.132   4.537    48   17.8  18:51 ( 68, 29)

* C/2022 W2 ( ATLAS )

Now it is 17.4 mag (Dec. 29, D. Wilde). It stays 17.5 mag until spring. It is observable in good condition in the Northern Hemisphere. It is not observable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  22 12.36   79 59.5   2.810   3.155   101   17.7  18:45 (168, 38)  
Jan. 28  23  7.21   80 20.5   2.813   3.146   100   17.7  18:51 (169, 39)

* 280P/Larsen

It has not been observed yet in this apparition. In the last apparition, it had faded before the perihelion passage. If it becomes as bright as its last apparition, it will brighten up to 17 mag. It stays observable in good condition for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  13 50.35   -0  5.7   2.698   2.946    94   17.9   5:37 (354, 55)  
Jan. 28  13 56.52   -0  3.2   2.587   2.926   100   17.8   5:30 (  0, 55)

* 452P/2022 B5 ( Sheppard-Jewitt )

Now it is 18.4 mag (Dec. 18, Ken-ichi Kadota). It stays observable at 18 mag in good condition from January to March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  10 33.53   12 35.7   3.367   4.210   144   17.9   2:35 (  0, 67)  
Jan. 28  10 31.53   12 58.9   3.307   4.206   152   17.8   2:05 (  0, 68)

* 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 17.7 mag (Jan. 2, J. Jahn). It will be fainter than 18 mag in January. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 21  12 35.26   39 17.4   5.947   6.504   120   17.9   4:36 (180, 86)  
Jan. 28  12 31.07   40 31.1   5.923   6.551   126   18.0   4:05 (180, 85)

* C/2021 QM45 ( PanSTARRS )

Now it is 17.9 mag (Dec. 27, 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)  
Jan. 21   7 48.76   50 15.9   2.330   3.217   149   17.9  23:47 (180, 75)  
Jan. 28   7 43.40   49 38.1   2.383   3.252   146   18.1  23:14 (180, 75)

* 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. It was originally predicted as 15 mag now. But actually, now it is very faint as 18.4 mag (Jan. 2, 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)  
Jan. 21  19 35.20  -64 46.3   3.359   2.754    45   18.9   5:37 (330,-31)  
Jan. 28  20  1.33  -64 26.3   3.420   2.833    46   19.2   5:34 (330,-31)

---------------------------------------------------------------------

Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.