Weekly Information about Bright Comets (2022 Dec. 3: North)

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 Updated on December 10, 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/2017 K2 ( PanSTARRS )

Now it is bright as 8.3 mag (Nov. 23, 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, 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.  3  17 12.17  -53 58.5   2.559   1.810    32    8.0  18:18 ( 41,-27)  
Dec. 10  17 28.98  -56 37.5   2.531   1.801    34    7.9  18:18 ( 39,-29)

* C/2022 E3 ( ZTF )

Now it is bright as 8.8 mag (Dec. 5, Katsumi Yoshimoto). 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, although it became extremely low temporarily in November. 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.  3  15 52.31   24 59.8   1.720   1.292    48    9.3   5:21 (251, 17)  
Dec. 10  15 53.05   25 42.2   1.579   1.239    51    8.9   5:26 (254, 23)

* C/2020 V2 ( ZTF )

Now it is 11.2 mag (Nov. 27, Osamu Miyazaki). 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.  3  11  4.16   75  1.5   2.358   2.841   109   10.4   5:21 (186, 50)  
Dec. 10  10 42.40   79 29.2   2.252   2.795   113   10.2   5:26 (180, 46)

* C/2022 P1 ( NEOWISE )

Now it is very bright as 10.4 mag (Nov. 23, Chris Wyatt). It stays 10 mag until November. 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.  3  19 34.16  -39 16.4   2.193   1.596    41   10.8  18:18 ( 38,  1)  
Dec. 10  19 31.17  -38 53.3   2.310   1.602    34   11.0  18:18 ( 43, -3)

* 118P/Shoemaker-Levy 4

Now it is 13.4 mag (Nov. 26, Toshihiko Ikemura, Hirohisa Sato). It stays bright as 11-12 mag until January, and it is observable in excellent condition. It is a bit fainter than this ephemeris. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   8 34.68    7 30.2   1.119   1.831   120   11.5   3:49 (  0, 62)  
Dec. 10   8 39.68    7 26.4   1.068   1.834   126   11.4   3:26 (  0, 62)

* 81P/Wild 2

Now it is 11.2 mag (Nov. 25, Michael Jager). 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.  3  13 11.89   -6  3.8   2.017   1.603    51   11.5   5:21 (304, 30)  
Dec. 10  13 31.29   -7 48.0   1.974   1.599    53   11.5   5:26 (308, 31)

* C/2019 L3 ( ATLAS )

It brightened up to 8.3 mag in last winter (Jan. 6, Toshiyuki Takahashi). Now it is fading. But it is bright as 11.8 mag still now (Nov. 26, Osamu Miyazaki). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  10  0.44  -25  6.8   4.522   4.598    88   11.7   5:14 (  0, 30)  
Dec. 10  10  0.48  -26 34.0   4.472   4.636    93   11.8   4:47 (  0, 28)

* C/2020 K1 ( PanSTARRS )

Now it is 13.4 mag (Nov. 12, Thomas Lehmann). 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.  3  17 56.02  -20 30.2   4.350   3.432    18   12.2  18:18 ( 66, -2)  
Dec. 10  18  2.58  -21 40.6   4.354   3.402    13   12.1  18:18 ( 68, -7)

* C/2021 Y1 ( ATLAS )

Now it is 13.6 mag (Nov. 23, Chris Wyatt). It stays bright as 12 mag until next summer. In the Northern Hemisphere, it stays observable in good condition until 2023 spring. In the Southern Hemisphere, it stays observable in good condition for a long time after this. It is fainter than this ephemeris recently. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   4 15.55   10 28.4   1.709   2.680   167   12.4  23:26 (  0, 65)  
Dec. 10   4  3.91    6 54.9   1.690   2.630   158   12.3  22:47 (  0, 62)

* C/2019 T4 ( ATLAS )

Now it is bright as 12.9 mag (Nov. 21, Ken-ichi Kadota). It stays 12 mag for a while. It stays observable in good condition for a while after this. It will be observable after January also in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  14 38.71   -2 22.2   5.266   4.489    34   12.8   5:21 (285, 16)  
Dec. 10  14 45.84   -2  4.2   5.220   4.508    39   12.9   5:26 (289, 22)

* C/2019 U5 ( PanSTARRS )

Now it is 13.2 mag (Nov. 16, Ken-ichi Kadota). It is expected to brighten up to 12 mag in 2023. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until mid December. But it will be observable in good condition in 2023. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  13 51.24    6 44.9   4.340   3.774    49   13.0   5:21 (285, 31)  
Dec. 10  13 52.24    5 56.5   4.228   3.757    55   13.0   5:26 (292, 37)

* 29P/Schwassmann-Wachmann 1

It brightened in major outburst in late November. Now it is very bright as 11.3 mag (Nov. 27, Jose Guilherme de S. Aguiar). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   6 51.70   29 22.7   5.185   6.048   148   13.4   2:07 (  0, 84)  
Dec. 10   6 48.59   29 25.7   5.137   6.051   156   13.4   1:36 (  0, 84)

* C/2022 A2 ( PanSTARRS )

Brightening very rapidly. Now it is very bright as 11.4 mag (Nov. 25, Michael Jager). It is expected to brighten up to 11-12 mag in winter. 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.  3  13 43.64   31 45.3   2.155   2.001    67   13.7   5:21 (258, 45)  
Dec. 10  14  3.79   35  3.8   2.020   1.958    72   13.4   5:26 (255, 49)

* 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 15.6 mag (Nov. 26, G. Duszanowicz, J. Camarasa). 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.  3   9 36.56  -43 47.4   2.692   2.783    84   13.7   4:51 (  0, 11)  
Dec. 10   9 24.21  -43 58.9   2.654   2.845    90   13.7   4:11 (  0, 11)

* 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.  3  15 57.52  -60 58.2   2.856   2.187    39   14.0   5:21 (326,-29)  
Dec. 10  16 29.15  -62 26.7   2.932   2.269    40   14.2   5:26 (328,-29)

* 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.  3  16  4.51  -20 43.5   2.634   1.661     7   14.2   5:21 (288,-11)  
Dec. 10  16 25.72  -22  1.0   2.607   1.643     9   14.1   5:26 (290,-10)

* C/2021 X1 ( Maury-Attard )

Now it is 14.5 mag (Nov. 25, 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.  3   4 52.39  -24 29.7   2.888   3.636   133   14.4   0:08 (  0, 31)  
Dec. 10   4 34.55  -24 25.6   2.871   3.606   132   14.4  23:16 (  0, 31)

* C/2022 U2 ( ATLAS )

Brightening very rapidly. Now it is 15.1 mag (Nov. 25, Ken-ichi Kadota). It brightens up to 13 mag in January. 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.  3  19  3.17   67 53.5   1.017   1.464    93   14.7  18:18 (153, 43)  
Dec. 10  19 15.75   68 57.6   0.949   1.424    94   14.4  18:18 (155, 41)

* 117P/Helin-Roman-Alu 1

Now it is 14.7 mag (Nov. 23, Chris Wyatt). It stays observable at 13-14 mag for a while. It locates low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  20  7.79  -27 23.9   3.696   3.126    48   14.7  18:18 ( 40, 15)  
Dec. 10  20 18.55  -26 46.8   3.773   3.135    43   14.8  18:18 ( 44, 13)

* 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.  3  17 23.12  -17  9.9   4.012   3.056    12   14.9  18:18 ( 73, -6)  
Dec. 10  17 28.21  -16  1.5   4.045   3.074     8   15.0  18:18 ( 78,-10)

* C/2021 T4 ( Lemmon )

Now it is 14.5 mag (Nov. 23, Chris Wyatt). It is expected to brighten up to 8 mag in 2023 July. In 2022, it stays observable in good condition while the comet will be brightening gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   1 13.15  -12 19.1   2.792   3.390   119   15.0  20:24 (  0, 43)  
Dec. 10   1  2.35  -12 56.2   2.846   3.321   110   15.0  19:46 (  0, 42)

* 119P/Parker-Hartley

Now it is 15.1 mag (Nov. 25, Chris Wyatt). It stays observable in good condition at 15 mag from summer to winter. It locates somwwhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   8  8.68   19 42.9   1.700   2.456   130   15.2   3:23 (  0, 75)  
Dec. 10   8  8.08   20  8.0   1.652   2.472   137   15.2   2:55 (  0, 75)

* P/2022 L3 ( ATLAS )

Now it is 14.8 mag (Nov. 24, Purple Mountain Observatory, XuYi Station). It stays 15 mag and observable in excellent condition until December. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   2  1.47   25 20.1   1.566   2.438   144   15.3  21:13 (  0, 80)  
Dec. 10   1 59.25   25 58.3   1.627   2.446   137   15.4  20:43 (  0, 81)

* C/2020 Y2 ( ATLAS )

Now it is 14.9 mag (Nov. 25, 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.  3   3 27.21  -50 19.4   3.122   3.525   106   15.5  22:36 (  0,  5)  
Dec. 10   3  9.83  -48 22.1   3.184   3.555   104   15.6  21:52 (  0,  7)

* C/2021 G2 ( ATLAS )

Now it is 15.8 mag (Nov. 21, Ken-ichi Kadota). It will brighten up to 13 mag from 2024 to 2025. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   9 14.67  -35 53.9   6.822   6.931    92   15.6   4:29 (  0, 19)  
Dec. 10   9 14.80  -36 36.5   6.715   6.897    96   15.5   4:01 (  0, 18)

* C/2021 S3 ( PanSTARRS )

Now it is 15.6 mag (Nov. 29, ATLAS Chile). 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.  3   6  5.10  -36 46.3   4.815   5.343   117   15.7   1:20 (  0, 18)  
Dec. 10   6  0.18  -37 27.2   4.740   5.279   118   15.6   0:47 (  0, 18)

* 116P/Wild 4

It brightened up to 12.7 mag in early 2022 (Feb. 27, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. Now it is not observable. It will be observable agin at 16 mag in January in the Southern Hemisphere, or in February in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  16  4.52  -22 27.4   3.373   2.398     7   15.6   5:21 (289,-12)  
Dec. 10  16 19.37  -23 10.0   3.378   2.417    10   15.7   5:26 (292, -9)

* 73P/Schwassmann-Wachmann 3

Outburst occured in early October. Now it is very bright as 11.8 mag (Nov. 23, Chris Wyatt). It stays observable in good 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.  3  21 57.00  -23 51.8   1.621   1.632    72   15.7  18:18 ( 18, 29)  
Dec. 10  22 17.20  -21 31.0   1.736   1.696    71   16.1  18:18 ( 21, 31)

* 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.  3  18 44.05  -46 22.4   2.150   1.466    35   16.4  18:18 ( 40,-10)  
Dec. 10  18 58.30  -45 41.3   2.073   1.347    32   15.8  18:18 ( 42,-12)

* C/2020 S4 ( PanSTARRS )

Now it is 15.8 mag (Nov. 29, J. L. Virlichie, P. Traverse, H. Roy, G. Houdin). 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.  3   9 27.30   17 29.8   2.939   3.430   111   16.0   4:41 (  0, 72)  
Dec. 10   9 30.89   17 58.1   2.840   3.418   118   15.9   4:18 (  0, 73)

* 285P/LINEAR

It brightened by 6 mag in outburst in early August up to 14.6 mag (Aug. 13, ATLAS-MLO, Mauna Loa). It is bright as 16.2 mag still now (Nov. 18, Toshihiko Ikemura, Hirohisa Sato). It seems to stay 16 mag for a while. It stays observable in good condition for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  20 54.34   -8 21.5   1.973   1.768    63   16.0  18:18 ( 42, 37)  
Dec. 10  21 12.32   -8 37.5   2.014   1.753    60   16.0  18:18 ( 44, 35)

* 77P/Longmore

Now it is 16.8 mag (Nov. 10, 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.  3  13  7.15    0 30.2   2.901   2.480    55   16.2   5:21 (299, 36)  
Dec. 10  13 17.01   -1  3.6   2.812   2.466    59   16.0   5:26 (306, 38)

* 61P/Shajn-Schaldach

Now it is 15.4 mag (Nov. 26, Toshihiko Ikemura, Hirohisa Sato). 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 March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   1 19.12    0  2.2   1.401   2.148   127   16.1  20:31 (  0, 55)  
Dec. 10   1 22.49    0 31.6   1.473   2.156   121   16.2  20:07 (  0, 56)

* C/2022 S3 ( PanSTARRS )

Now it is 17.6 mag (Oct. 25, Michael Jager). 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 observable only until early Decemebr. Then it will become observable again in early March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  20 26.70  -34 25.4   1.564   1.228    51   16.4  18:18 ( 32, 11)  
Dec. 10  20 34.76  -37 26.5   1.565   1.144    46   16.1  18:18 ( 34,  6)

* 408P/2020 M7 ( Novichonok-Gerke )

Now it is 16.3 mag (Nov. 13, ATLAS South Africa). 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.  3   4 16.71   -1 10.7   2.553   3.479   156   16.1  23:27 (  0, 54)  
Dec. 10   4 12.60   -1 28.8   2.579   3.482   152   16.1  22:56 (  0, 54)

* 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.  3  15  2.52  -55 21.6   6.575   5.825    37   16.2   5:21 (324,-20)  
Dec. 10  15  6.18  -56 17.2   6.572   5.852    39   16.3   5:26 (328,-17)

* 22P/Kopff

Now it is 14.8 mag (Nov. 19, W. Pei). It stays observable in good condition after this. But it will be fading gradually after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   0 47.08   -1 34.4   2.161   2.783   119   16.3  19:59 (  0, 54)  
Dec. 10   0 48.83   -1  6.9   2.289   2.824   113   16.6  19:33 (  0, 54)

* (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.  3   8 22.05   21 16.8   0.178   1.104   127   16.5   3:37 (  0, 76)  
Dec. 10   8 17.18   23 45.3   0.194   1.133   136   16.5   3:04 (  0, 79)

* 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.  3  13 25.56  -51 56.9   3.902   3.310    47   16.7   5:21 (332, -7)  
Dec. 10  13 40.28  -54  0.6   3.853   3.297    49   16.6   5:26 (335, -7)

* 204P/LINEAR-NEAT

Now it is 17.3 mag (Nov. 26, ATLAS-HKO, Haleakala). 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.  3   9 45.40   14 16.6   1.296   1.840   106   16.8   4:59 (  0, 69)  
Dec. 10   9 54.80   14  6.5   1.240   1.846   111   16.6   4:41 (  0, 69)

* C/2022 E2 ( ATLAS )

Now it is 17.0 mag (Nov. 16, Ken-ichi Kadota). 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.  3  10 33.29  -19 51.8   6.628   6.584    83   16.8   5:21 (352, 35)  
Dec. 10  10 31.87  -19 59.8   6.469   6.540    89   16.7   5:18 (  0, 35)

* 44P/Reinmuth 2

Now it is 16.7 mag (Nov. 18, ATLAS-HKO, Haleakala). It will be observable at 16-17 mag in good condition from summer to autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   3  0.57   24 17.1   1.733   2.673   158   17.1  22:12 (  0, 79)  
Dec. 10   2 57.05   23 40.2   1.801   2.701   150   17.2  21:41 (  0, 79)

* 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 16.3 mag (Nov. 18, Toshihiko Ikemura, Hirohisa Sato). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   6 42.55   10  2.7   3.534   4.395   147   17.1   1:57 (  0, 65)  
Dec. 10   6 39.28    9 48.1   3.508   4.415   154   17.1   1:27 (  0, 65)

* 402P/2020 Q3 ( LINEAR )

It brightened up to 15.3 mag in last winter (Jan. 12, H. Nohara). Now it is fading. It has already faded down to 17.8 mag (Nov. 25, ATLAS-MLO, Mauna Loa). 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.  3  10 21.19   19 42.9   4.123   4.409   100   17.1   5:21 (347, 74)  
Dec. 10  10 23.48   20 14.4   4.035   4.426   107   17.1   5:10 (  0, 75)

* C/2020 F5 ( MASTER )

It brightened up to 14 mag in 2021. Now it is fading. It has already faded down to 16.9 mag (Nov. 21, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  23 16.13   15  4.6   6.220   6.542   104   17.1  18:28 (  0, 70)  
Dec. 10  23 16.53   15 10.2   6.368   6.581    98   17.2  18:18 ( 12, 70)

* 395P/2020 H1 ( Catalina-NEAT )

Now it is 17.1 mag (Nov. 21, Toshihiko Ikemura, Hirohisa Sato). It continued brightening even after the perihelion passage. It stays observable at 16 mag in good condition for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  23  3.73   -3 22.7   4.221   4.422    95   17.2  18:18 (  1, 52)  
Dec. 10  23  6.95   -3  8.7   4.342   4.436    88   17.2  18:18 ( 11, 51)

* C/2022 A3 ( Lemmon-ATLAS )

Now it is 17.0 mag (Nov. 18, Toshihiko Ikemura, Hirohisa Sato). 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.  3  10 33.10    4 41.7   4.391   4.539    92   17.3   5:21 (347, 59)  
Dec. 10  10 31.33    3 41.6   4.238   4.505    99   17.2   5:18 (  0, 59)

* C/2019 O3 ( Palomar )

Now it is 17.1 mag (Nov. 28, 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)  
Dec.  3  17 34.90   62 44.7   9.573   9.548    85   17.2  18:18 (147, 34)  
Dec. 10  17 39.58   62 52.8   9.581   9.563    85   17.2  18:18 (148, 31)

* 244P/Scotti

Now it is 17.4 mag (Nov. 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)  
Dec.  3   6 23.93   26 15.8   3.006   3.921   154   17.3   1:39 (  0, 81)  
Dec. 10   6 19.82   26 19.8   2.970   3.921   162   17.3   1:07 (  0, 81)

* C/2020 F2 ( ATLAS )

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.  3  13 35.07    3 42.2   9.441   8.855    51   17.3   5:21 (291, 33)  
Dec. 10  13 35.72    3 51.0   9.344   8.858    57   17.3   5:26 (297, 39)

* 246P/NEAT

Now it is 16.2 mag (Nov. 21, Toshihiko Ikemura, Hirohisa Sato). 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.  3   0  4.72  -17 32.2   3.798   4.131   102   17.3  19:17 (  0, 38)  
Dec. 10   0  5.94  -16 49.7   3.917   4.148    96   17.4  18:50 (  0, 38)

* 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 16.9 mag (Nov. 18, Katsumi Yoshimoto). 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.  3   1 18.27  -22 47.5   5.328   5.804   114   17.4  20:30 (  0, 32)  
Dec. 10   1 16.28  -21 55.0   5.462   5.848   108   17.5  20:00 (  0, 33)

* C/2021 QM45 ( PanSTARRS )

Now it is 17.6 mag (Nov. 2, ATLAS-MLO, Mauna Loa). 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.  3   8 18.46   50  1.1   2.284   2.998   128   17.4   3:33 (180, 75)  
Dec. 10   8 17.67   50 26.0   2.259   3.026   133   17.5   3:05 (180, 75)

* 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 17.9 mag (Oct. 28, Ken-ichi Kadota). 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.  3  10 51.94    1  9.9   1.546   1.784    86   17.5   5:21 (340, 55)  
Dec. 10  11  0.10   -0 48.2   1.509   1.817    91   17.5   5:26 (351, 54)

* C/2022 L1 ( Catalina )

Brightened rapidly. It brightened up to 14.0 mag in early September (Sept. 2, Michael Jager). Now it is 16.0 mag (Sept. 26, Ken-ichi Kadota). It will be fading after this. In the Northern Hemisphere, it stays observable for a long time, although it became extremely low in November. It is not observable after this in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  15 19.02   23 40.8   2.302   1.821    49   17.5   5:21 (256, 23)  
Dec. 10  15 18.84   25 24.8   2.252   1.867    54   17.7   5:26 (259, 30)

* C/2019 T3 ( ATLAS )

Now it is 18.2 mag (Nov. 21, Toshihiko Ikemura, Hirohisa Sato). It stayed bright for a while even after the perihelion passage, but it will be fading after this. It will be fainter than 18 mag in winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  21 15.06   -3  9.8   7.685   7.409    70   17.6  18:18 ( 40, 44)  
Dec. 10  21 16.40   -3 36.2   7.825   7.437    63   17.6  18:18 ( 47, 40)

* C/2022 Q2 ( ATLAS )

Now it is 16.8 mag (Nov. 18, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 17-18 mag until next summer. It may be brighter than this ephemeris. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  21 11.27  -12 42.5   1.979   1.816    65   17.6  18:18 ( 35, 35)  
Dec. 10  21  3.92  -11 56.3   2.105   1.780    57   17.6  18:18 ( 44, 31)

* 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.  3   8 17.72   19  1.3   0.786   1.596   128   17.8   3:32 (  0, 74)  
Dec. 10   8  9.24   19  6.8   0.792   1.656   137   17.7   2:57 (  0, 74)

* 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.  3  12 43.94   31 55.7   6.320   6.179    77   17.7   5:21 (264, 57)  
Dec. 10  12 44.57   32 45.2   6.259   6.225    83   17.7   5:26 (266, 64)

* C/2020 U4 ( PanSTARRS )

Now it is 17.6 mag (Nov. 14, X. Gao, Q.-Z. Ye). It will be fainter than 18 mag soon. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   0 35.32   19 37.2   5.025   5.639   124   17.7  19:47 (  0, 75)  
Dec. 10   0 30.30   18 43.0   5.154   5.655   116   17.8  19:14 (  0, 74)

* C/2019 E3 ( ATLAS )

Now it is 17.0 mag (Nov. 24, iTelescope Observatory, Siding Spring). Very far object. It stays 18 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.  3   7 44.86  -74 49.5  10.629  10.479    78   17.8   2:58 (  0,-20)  
Dec. 10   7 33.44  -75 24.7  10.615  10.472    79   17.8   2:19 (  0,-20)

* 19P/Borrelly

It brightened up to 8.8 mag from last winter to early spring (Jan. 31, Chris Wyatt). Now it is fading. Appearing in the morning sky. It will be fainter than 18 mag in December. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  14  4.54   11 31.0   3.740   3.196    49   17.8   5:21 (278, 32)  
Dec. 10  14 12.08   11  9.2   3.712   3.241    54   17.9   5:26 (283, 36)

* 9P/Tempel 1

Now it is 17.5 mag (Nov. 21, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. It stays 13-14 mag for a while. It is observable in excellent condition in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3  22 45.68  -19  2.1   2.677   2.775    85   17.8  18:18 (  6, 36)  
Dec. 10  22 52.43  -17 53.9   2.809   2.813    80   18.0  18:18 ( 12, 36)

* P/2021 V2 ( Fuls )

Now it is 18.9 mag (Nov. 23, ATLAS-MLO, Mauna Loa). 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.  3   9  3.08    2 16.6   3.021   3.515   112   17.9   4:17 (  0, 57)  
Dec. 10   9  4.30    1 37.4   2.931   3.510   118   17.9   3:51 (  0, 57)

* C/2022 P3 ( ZTF )

Now it is 17.7 mag (Nov. 18, Toshihiko Ikemura, Hirohisa Sato). In the Northern Hemisphere, it is observable at 17-18 mag in excellent condition in autumn. It is not observable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  3   8 32.75   66 25.3   2.252   2.900   122   17.9   3:48 (180, 59)  
Dec. 10   8 32.84   69 17.7   2.263   2.935   124   17.9   3:21 (180, 56)

* 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.  3  11 13.68   13 30.7   2.206   2.360    86   18.0   5:21 (321, 64)  
Dec. 10  11 23.11   13 39.4   2.129   2.368    91   17.9   5:26 (333, 66)

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