Weekly Information about Bright Comets (2023 Feb. 4: North)

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Updated on February 5, 2023
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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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* 96P/Machholz 1

It approached to Sun down to 0.1 a.u. on Jan. 31. In the Northern Hemisphere, it will appear in the morning sky soon, then it stays observable while the comet will be fading. In the Southern Hemisphere, it is not observable until mid February.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  20 30.17   -8  4.5   0.965   0.213    12    4.6   5:30 (276, -6)  
Feb. 11  20 12.47   -6 26.2   1.157   0.442    22    8.8   5:25 (280,  3)  

* C/2022 E3 ( ZTF )

Now it is very bright as 5.0 mag (Jan. 28, Osamu Miyazaki). Now it is approaching to Earth down to 0.29 a.u. In the Northern Hemisphere, it stays observable in excellent condition for a long time. It is observable in good condition after this also in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4   5 29.10   57 48.1   0.294   1.169   122    5.0  20:27 (180, 70)  
Feb. 11   4 48.14   26 11.0   0.419   1.209   112    5.9  19:23 (  0, 80)  

* C/2017 K2 ( PanSTARRS )

Now it is very bright as 8.6 mag (Jan. 25, Chris Wyatt). 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. In the Northern Hemisphere, it is not observable until summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  23 18.24  -69 43.5   2.240   1.892    56    7.8  18:57 ( 21,-25)  
Feb. 11   0 17.45  -67 28.5   2.228   1.921    59    7.9  19:03 ( 22,-22)  

* C/2022 A2 ( PanSTARRS )

It brightened very rapidly. Now it is very bright as 9.9 mag (Jan. 27, Osamu Miyazaki). It stays 9-10 mag until March. In the Northern Hemisphere, it stays observable for a long time. But it locates low until spring. In the Southern Hemisphere, it is not observable until June.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  20  4.23   58 16.8   1.700   1.745    75    9.5   5:30 (218, 32)  
Feb. 11  20 54.93   56 50.0   1.775   1.738    71    9.6   5:25 (218, 28)  

* C/2020 V2 ( ZTF )

Now it is 10.6 mag (Jan. 28, 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)  
Feb.  4   1 30.61   54 49.7   2.263   2.471    90    9.7  18:57 (140, 59)  
Feb. 11   1 34.08   50 35.6   2.353   2.438    83    9.7  19:03 (130, 55)  

* C/2022 U2 ( ATLAS )

It brightened very rapidly. Now it is very bright as 9.6 mag (Jan. 25, Toshihiko Ikemura, Hirohisa Sato). It stays 10-12 mag until February. In the Northern Hemisphere, it stays observable in good condition. Appearing in the evening sky also in the Southern Hemisphere. It stays observable in excellent condition after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4   4 50.37   47  8.0   0.576   1.363   119   11.5  19:56 (180, 79)  
Feb. 11   5 15.71   36  0.9   0.617   1.390   118   11.8  19:53 (180, 90)  

* 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 became 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)  
Feb.  4  19  3.22  -30 57.4   4.002   3.208    31   11.6   5:30 (306, -3)  
Feb. 11  19 11.40  -32 15.2   3.915   3.189    37   11.5   5:25 (309, -1)  

* 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. 14, Thomas Lehmann). It is observable in excellent 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)  
Feb.  4   9 35.29  -34 40.2   4.278   4.952   128   11.6   0:42 (  0, 20)  
Feb. 11   9 30.12  -35  1.4   4.293   4.993   130   11.7   0:09 (  0, 20)  

* 81P/Wild 2

Now it is 11.4 mag (Jan. 27, Toshihiko Ikemura, Hirohisa Sato). It stays 11-12 mag until spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  16  0.32  -17 27.7   1.671   1.674    73   11.8   5:30 (333, 33)  
Feb. 11  16 16.75  -18  1.6   1.635   1.696    76   11.8   5:25 (334, 33)  

* C/2019 U5 ( PanSTARRS )

Now it is 12.3 mag (Jan. 25, Osamu Miyazaki). 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)  
Feb.  4  13 31.84    1  4.6   3.152   3.657   113   12.2   4:38 (  0, 56)  
Feb. 11  13 23.78    0 38.8   3.027   3.649   122   12.1   4:02 (  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 stays observable in good condition for a long time, although it became 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)  
Feb.  4  19 24.56  -38 28.2   2.580   1.816    31   12.8   5:30 (310,-11)  
Feb. 11  19 22.84  -38 47.2   2.531   1.859    38   13.1   5:25 (313, -8)  

* C/2019 T4 ( ATLAS )

Now it is bright as 12.9 mag (Jan. 27, Toshihiko Ikemura, Hirohisa Sato). It stays 13 mag until spring. It stays observable in good condition for a while after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  15 31.83    3  5.4   4.660   4.682    85   12.9   5:30 (330, 54)  
Feb. 11  15 35.56    4  6.9   4.582   4.707    91   12.9   5:25 (337, 57)  

* 71P/Clark

It brightens up to 13 mag in winter. But the condition is bad. Appearing in the morning sky in the Southern Hemisphere. It is not observable until May in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  19 30.05  -25 31.0   2.436   1.593    24   13.2   5:30 (298, -4)  
Feb. 11  19 53.05  -25  0.8   2.421   1.599    26   13.2   5:25 (298, -4)  

* 118P/Shoemaker-Levy 4

Now it is 13.0 mag (Jan. 21, Ken-ichi Kadota). 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)  
Feb.  4   8 28.87   14 41.9   0.949   1.927   170   13.2  23:31 (  0, 70)  
Feb. 11   8 25.73   16  2.7   0.981   1.946   162   13.4  23:01 (  0, 71)  

* 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)  
Feb.  4   6 21.07   29  3.3   5.283   6.068   139   13.5  21:24 (  0, 84)  
Feb. 11   6 19.05   28 54.9   5.362   6.070   132   13.5  20:55 (  0, 84)  

* C/2021 Y1 ( ATLAS )

Now it is 13.8 mag (Jan. 20, Ken-ichi Kadota). The brightness evolution is slower than originally predicted. It stays 14 mag until summer. In the Northern Hemisphere, it will too low to observe in late March. 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)  
Feb.  4   3 15.21  -12 42.3   2.085   2.276    88   13.6  18:57 ( 12, 41)  
Feb. 11   3 16.22  -13 55.2   2.155   2.240    81   13.6  19:03 ( 22, 38)  

* 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 until early March. It has not been observed since late October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  23 21.89  -62 44.5   1.016   0.875    51   14.0  18:57 ( 27,-21)  
Feb. 11   0 27.87  -64 52.7   0.892   0.920    58   13.9  19:03 ( 23,-20)  

* 237P/LINEAR

Now it is 15.7 mag (Jan. 26, ATLAS Chile). 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)  
Feb.  4  16 51.76  -25 36.3   2.453   2.138    59   14.7   5:30 (325, 20)  
Feb. 11  17  7.80  -25 31.1   2.367   2.119    63   14.3   5:25 (326, 21)  

* C/2021 T4 ( Lemmon )

Now it is 14.7 mag (Jan. 11, Hiroshi Abe). It is expected to brighten up to 8 mag in July. It will be unobservable soon. 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)  
Feb.  4   0 22.11  -13  4.2   3.340   2.762    46   14.5  18:57 ( 56, 21)  
Feb. 11   0 21.60  -12 47.5   3.370   2.693    40   14.4  19:03 ( 62, 15)  

* 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)  
Feb.  4   2 51.64  -15 11.2   3.403   3.407    81   14.5  18:57 ( 19, 38)  
Feb. 11   2 45.99  -13 41.3   3.509   3.386    74   14.5  19:03 ( 31, 36)  

* 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 15.0 mag (Jan. 14, Thomas Lehmann). 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)  
Feb.  4   7 20.28  -32 34.0   2.690   3.349   124   14.7  22:22 (  0, 23)  
Feb. 11   7  9.49  -29 44.9   2.767   3.413   123   14.9  21:44 (  0, 25)  

* 77P/Longmore

Now it is 15.8 mag (Jan. 24, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4  14 21.89  -13 18.4   2.050   2.380    97   15.0   5:27 (  0, 42)  
Feb. 11  14 27.02  -14 50.5   1.956   2.373   102   14.8   5:05 (  0, 40)  

* C/2021 S3 ( PanSTARRS )

Now it is 14.8 mag (Jan. 26, iTelescope Observatory, Siding Spring). 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)  
Feb.  4   5 19.32  -37  2.1   4.419   4.757   104   15.0  20:22 (  0, 18)  
Feb. 11   5 16.46  -36 19.2   4.406   4.690   100   14.9  19:52 (  0, 19)  

* C/2020 R7 ( ATLAS )

Now it is 15.6 mag (Jan. 16, Ken-ichi Kadota). The brightness evolution is slower than originally expected. It stays 14-15 mag for a long time. It stays observable in good condition for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  18  2.70   -5 20.2   3.865   3.269    46   15.0   5:30 (297, 25)  
Feb. 11  18  5.36   -3 38.7   3.797   3.299    53   15.0   5:25 (299, 30)  

* C/2021 G2 ( ATLAS )

Now it is 15.5 mag (Jan. 24, ATLAS Chile). 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)  
Feb.  4   8 59.64  -39 28.0   6.026   6.628   124   15.1   0:06 (  0, 15)  
Feb. 11   8 56.65  -39 19.7   5.972   6.595   125   15.0  23:31 (  0, 16)  

* 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)  
Feb.  4  21 46.12  -20 30.3   4.177   3.210     9   15.2  18:57 ( 74,-13)  
Feb. 11  21 56.80  -19 36.1   4.198   3.221     7   15.3  19:03 ( 78,-17)  

* 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 13.1 mag still now (Jan. 14, Thomas Lehmann). 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)  
Feb.  4   0 17.61   -5 27.4   2.736   2.196    47   15.7  18:57 ( 63, 25)  
Feb. 11   0 29.87   -3 48.3   2.858   2.256    44   16.0  19:03 ( 68, 23)  

* 119P/Parker-Hartley

Now it is 14.4 mag (Jan. 19, Toshihiko Ikemura, Hirohisa Sato). 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. It is brighter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4   7 32.09   24 46.4   1.688   2.620   156   15.7  22:35 (  0, 80)  
Feb. 11   7 28.69   25  8.8   1.750   2.641   148   15.8  22:04 (  0, 80)  

* C/2020 S4 ( PanSTARRS )

Now it is 14.6 mag (Jan. 24, Purple Mountain Observatory, XuYi Station). It stays 15-16 mag and observable in good condition until spring. It is brighter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4   9 31.01   24 52.7   2.395   3.370   170   15.8   0:38 (  0, 80)  
Feb. 11   9 28.59   25 49.9   2.397   3.370   168   15.8   0:08 (  0, 81)  

* C/2022 E2 ( ATLAS )

Now it is 15.7 mag (Jan. 26, 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)  
Feb.  4   9 58.71  -18 16.3   5.371   6.188   143   16.1   1:05 (  0, 37)  
Feb. 11   9 52.36  -17 33.6   5.286   6.144   147   16.0   0:31 (  0, 37)  

* 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 will be unobservable in March.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4   2 13.44  -29  4.8   4.046   3.829    70   16.0  18:57 ( 24, 22)  
Feb. 11   2 13.15  -26 55.4   4.174   3.867    65   16.1  19:03 ( 32, 21)  

* 204P/LINEAR-NEAT

It brightened rapidly. Now it is 16.3 mag (Jan. 26, Purple Mountain Observatory, XuYi Station). 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)  
Feb.  4  10 13.22   18 39.7   0.994   1.961   164   16.2   1:20 (  0, 73)  
Feb. 11  10  9.15   19 38.0   1.003   1.983   170   16.3   0:48 (  0, 74)  

* 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)  
Feb.  4  16 15.50  -68 36.0   3.470   3.243    68   16.3   5:30 (350,-16)  
Feb. 11  16 40.65  -69 55.8   3.424   3.242    71   16.3   5:25 (350,-17)  

* 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)  
Feb.  4  15 17.09  -65 24.7   6.271   6.077    74   16.3   5:30 (354,-11)  
Feb. 11  15 13.76  -66 41.3   6.215   6.106    79   16.3   5:25 (357,-12)  

* 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 17.1 mag (Jan. 19, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4   2 24.46    7 52.7   2.183   2.265    81   16.3  18:57 ( 42, 56)  
Feb. 11   2 35.23    8 57.0   2.280   2.283    77   16.5  19:03 ( 51, 54)  

* C/2022 A3 ( Lemmon-ATLAS )

Now it is 16.5 mag (Jan. 27, ATLAS Chile). 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)  
Feb.  4   9 43.10   -3 41.1   3.321   4.251   158   16.4   0:50 (  0, 51)  
Feb. 11   9 33.50   -4 24.2   3.275   4.222   161   16.3   0:13 (  0, 51)  

* C/2022 L2 ( ATLAS )

Now it is 17.4 mag (Jan. 18, A. Diepvens). It is expected to brighten up to 11.5 mag in 2024 spring. It stays observable in good condition for a long time. It becomes observable after late February also in the Southern Hemisphere. 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)  
Feb.  4  18 31.13   14 41.1   5.359   4.781    49   16.4   5:30 (274, 32)  
Feb. 11  18 33.27   14 54.8   5.245   4.730    53   16.3   5:25 (277, 36)  

* 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)  
Feb.  4  18 12.24  -25 49.6   3.237   2.588    41   16.4   5:30 (310,  9)  
Feb. 11  18 24.92  -25 50.2   3.197   2.611    46   16.4   5:25 (312, 10)  

* 263P/Gibbs

Now it is 16.8 mag (Jan. 25, ATLAS-HKO, Haleakala). It is observable at 16.5 mag in good condition from January to March. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  12 32.93   26 22.0   0.340   1.238   131   16.5   3:38 (  0, 81)  
Feb. 11  12 54.41   28  2.5   0.344   1.244   132   16.4   3:32 (  0, 83)  

* 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 15.8 mag (Jan. 21, Toshihiko Ikemura, Hirohisa Sato). In the Northern Hemisphere, it stays observable in excellent condition for a while. In the Southern Hemisphere, it will be unobservable soon.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4   2 33.14   31 18.3   2.344   2.563    91   16.4  18:57 ( 84, 73)  
Feb. 11   2 42.46   32  2.4   2.447   2.583    86   16.6  19:03 ( 90, 68)  

* 94P/Russell 4

Now it is 16.9 mag (Jan. 25, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4   8 28.45   28 10.8   1.377   2.344   165   16.6  23:31 (  0, 83)  
Feb. 11   8 23.05   28 35.0   1.386   2.330   157   16.6  22:58 (  0, 84)  

* 408P/2020 M7 ( Novichonok-Gerke )

Now it is 16.4 mag (Jan. 19, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4   4  3.71    0 26.0   3.154   3.516   103   16.6  19:07 (  0, 56)  
Feb. 11   4  6.45    1  0.9   3.253   3.522    97   16.7  19:03 (  9, 56)  

* C/2022 W3 ( Leonard )

Now it is 16.9 mag (Jan. 21, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4   9 14.12   75  2.8   1.689   2.358   121   16.9   0:25 (180, 50)  
Feb. 11   7 59.19   78 33.5   1.693   2.288   114   16.7  22:29 (180, 46)  

* 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)  
Feb.  4  17 17.17  -12 13.9   3.634   3.188    55   16.9   5:30 (311, 28)  
Feb. 11  17 26.28  -12 37.2   3.535   3.169    60   16.8   5:25 (314, 29)  

* C/2019 E3 ( ATLAS )

Now it is 16.9 mag (Jan. 20, ATLAS Chile). 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)  
Feb.  4   5 37.66  -75 36.8  10.506  10.424    82   16.9  20:38 (  0,-21)  
Feb. 11   5 26.94  -75  6.6  10.494  10.419    82   16.9  20:00 (  0,-20)  

* 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 17.2 mag (Jan. 28, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4  10 16.00   26 48.5   3.625   4.569   161   17.0   1:23 (  0, 82)  
Feb. 11  10 12.49   27 40.7   3.630   4.587   164   17.1   0:52 (  0, 83)  

* C/2020 F2 ( ATLAS )

Now it is 17.0 mag (Jan. 21, Toshihiko Ikemura, Hirohisa Sato). It stays 17 mag and observable in good condition until summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  13 29.22    6 38.5   8.426   8.896   115   17.1   4:35 (  0, 62)  
Feb. 11  13 26.63    7 10.9   8.324   8.901   123   17.1   4:05 (  0, 62)  

* C/2020 H6 ( ATLAS )

Now it is 17.1 mag (Jan. 27, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4  18  4.91   44 37.6   6.246   6.048    73   17.3   5:30 (240, 48)  
Feb. 11  18 11.82   45 42.2   6.250   6.080    75   17.3   5:25 (238, 50)  

* 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 16.7 mag (Jan. 19, ATLAS Chile).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4   6 12.28    9 44.9   3.807   4.575   136   17.3  21:15 (  0, 65)  
Feb. 11   6 10.89    9 55.8   3.902   4.596   129   17.4  20:46 (  0, 65)  

* 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)  
Feb.  4  18 17.93   66 40.4   9.659   9.690    88   17.4   5:30 (208, 44)  
Feb. 11  18 21.92   67 27.0   9.674   9.706    88   17.4   5:25 (206, 46)  

* C/2014 UN271 ( Bernardinelli-Bernstein )

Now it is 17.8 mag (Jan. 24, 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)  
Feb.  4   2 28.07  -59 28.8  18.327  18.027    70   17.4  18:57 ( 11, -6)  
Feb. 11   2 28.84  -59 11.7  18.329  18.001    69   17.4  19:03 ( 15, -7)  

* 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)  
Feb.  4   5 48.61   26  6.7   3.196   3.932   132   17.4  20:52 (  0, 81)  
Feb. 11   5 47.63   26  1.8   3.278   3.935   125   17.4  20:23 (  0, 81)  

* 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)  
Feb.  4  14  2.01    0  5.7   2.478   2.907   105   17.7   5:08 (  0, 55)  
Feb. 11  14  6.72    0 21.3   2.374   2.888   111   17.6   4:45 (  0, 55)  

* 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)  
Feb.  4   2 25.24   27 56.9   6.984   7.029    88   17.6  18:57 ( 76, 70)  
Feb. 11   2 27.71   28  2.0   7.081   7.015    82   17.6  19:03 ( 83, 64)  

* 211P/Hill

Now it is 18.4 mag (Jan. 25, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4  12  3.46   20 33.4   1.635   2.461   138   17.7   3:09 (  0, 75)  
Feb. 11  12  2.82   22  1.5   1.605   2.475   144   17.7   2:41 (  0, 77)  

* P/2021 V2 ( Fuls )

Now it is 17.6 mag (Jan. 22, iTelescope Observatory, Siding Spring). 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)  
Feb.  4   8 47.90   -0 13.7   2.545   3.498   162   17.7  23:50 (  0, 55)  
Feb. 11   8 44.43    0  0.8   2.553   3.500   160   17.7  23:19 (  0, 55)  

* C/2022 W2 ( ATLAS )

Now it is 17.9 mag (Jan. 17, A. Diepvens). 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)  
Feb.  4   0  7.81   80 19.1   2.822   3.139    99   17.7  18:57 (170, 40)  
Feb. 11   1  9.35   79 49.3   2.838   3.133    98   17.7  19:03 (170, 41)  

* C/2020 F5 ( MASTER )

It brightened up to 14 mag in 2021. Now it is fading. It has already faded down to 17.2 mag (Jan. 21, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4  23 33.98   17 31.5   7.496   6.895    49   17.8  18:57 ( 91, 30)  
Feb. 11  23 37.38   18  0.6   7.611   6.935    43   17.8  19:03 ( 96, 25)  

* 452P/2022 B5 ( Sheppard-Jewitt )

Now it is 18.6 mag (Jan. 21, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb.  4  10 28.99   13 24.6   3.261   4.202   160   17.8   1:35 (  0, 68)  
Feb. 11  10 26.02   13 51.8   3.228   4.198   167   17.8   1:05 (  0, 69)  

* 99P/Kowal 1

It brightened up to 15.9 mag in 2022 spring (May 5, Toshiyuki Takahashi). In 2023, it is observable at 17.5 mag in spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  16 11.70  -22 57.3   5.095   4.837    69   17.9   5:30 (332, 27)  
Feb. 11  16 16.28  -23 13.8   4.997   4.843    75   17.9   5:25 (337, 28)  

* C/2022 U4 ( Bok )

Now it is 17.9 mag (Jan. 19, Toshihiko Ikemura, Hirohisa Sato). In the Northern Hemisphere, it stays observable at 17.5 mag in good condition from spring to summer. In the Southern Hemisphere, it locates extremely low only in summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb.  4  13  6.69   39 12.1   2.764   3.411   123   18.0   4:12 (180, 86)  
Feb. 11  13 10.70   41 18.5   2.694   3.376   126   17.9   3:49 (180, 84)  

* 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)  
Feb.  4  20 25.53  -64  1.2   3.476   2.912    48   19.5   5:30 (329,-31)  
Feb. 11  20 47.88  -63 33.2   3.529   2.991    49   19.8   5:25 (329,-31)  

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