Weekly Information about Bright Comets (2022 Oct. 22: North)

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Updated on October 22, 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 8.6 mag (Oct. 15, 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)  
Oct. 22  16 11.33  -39 30.2   2.548   1.947    43    8.2  18:41 ( 46, -7)  
Oct. 29  16 18.03  -41 46.5   2.573   1.915    39    8.2  18:34 ( 46,-11)  

* C/2022 P1 ( NEOWISE )

Now it is very bright as 9.9 mag (Oct. 15, Chris Wyatt). It stays 10 mag until November. In the Northern Hemisphere, it becomes unobservable soon. In the Southern Hemisphere, it becomes unobservable temporarily from December to January.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  20 55.64  -42 24.7   1.248   1.668    95   10.1  18:51 (  0, 13)  
Oct. 29  20 27.69  -42  7.5   1.417   1.643    84   10.2  18:34 (  7, 13)  

* C/2022 E3 ( ZTF )

Now it is bright as 11.1 mag (Oct. 21, Osamu Miyazaki). It will approach to Earth down to 0.29 a.u. in 2023 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 becomes 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)  
Oct. 22  15 50.20   25 32.2   2.211   1.704    47   11.0  18:41 (103, 27)  
Oct. 29  15 49.66   25  0.4   2.169   1.628    45   10.8  18:34 (105, 23)  

* C/2020 V2 ( ZTF )

Now it is 11.6 mag (Oct. 19, Osamu Miyazaki). It is expected to brighten up to 10 mag in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 autumn. In the Southern Hemipshere, it stays unobservable until 2023 summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  11  0.47   57 58.1   3.218   3.139    76   11.5   4:47 (221, 43)  
Oct. 29  11  4.93   59 44.3   3.064   3.087    82   11.3   4:52 (218, 46)  

* 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 12.2 mag still now (Oct. 20, Osamu Miyazaki).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   9 46.17  -15 55.7   4.821   4.378    58   11.5   4:47 (312, 24)  
Oct. 29   9 49.99  -17 27.8   4.775   4.413    62   11.6   4:52 (320, 27)  

* 81P/Wild 2

Now it is 11.6 mag (Oct. 15, Ken-ichi Kadota). It will appear in the morning sky in November 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)  
Oct. 22  11 17.15    5  2.5   2.322   1.687    40   12.0   4:47 (279, 21)  
Oct. 29  11 35.97    3 12.5   2.266   1.667    42   11.9   4:52 (283, 23)  

* 118P/Shoemaker-Levy 4

Now it is 12.8 mag (Oct. 1, Thomas Lehmann). It is expected to brighten very rapidly up to 11-12 mag in winter, and it will be observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   7 37.05   10 28.2   1.495   1.851    93   12.4   4:47 (332, 63)  
Oct. 29   7 49.28    9 49.8   1.425   1.843    97   12.2   4:52 (344, 64)  

* C/2020 K1 ( PanSTARRS )

Now it is 13.1 mag (Oct. 2, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 11 mag in 2023. In the Northern Hemisphere, it will be unobservable in November. In the Southern Hemisphere, it stays observable in good condition for a long time, although it becomes unobservable temporarily from November to January.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  17 25.02  -12 39.7   4.124   3.626    53   12.3  18:41 ( 54, 23)  
Oct. 29  17 28.99  -14  5.4   4.182   3.591    47   12.3  18:34 ( 56, 19)  

* C/2021 P4 ( ATLAS )

It brightened up to 10.4 mag from June to July (July 22, Ken-ichi Kadota). Appearing in the morning sky in the Souther Hemisphere. It will never be observable again in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  13 20.05  -44 41.8   2.430   1.702    34   12.4   4:47 (306,-29)  
Oct. 29  13 42.11  -48 13.6   2.494   1.781    35   12.7   4:52 (311,-29)  

* C/2019 T4 ( ATLAS )

Now it is bright as 12.8 mag (Aug. 28, Hiroshi Abe). It stays 12 mag for a while. It becomes unobservable from August to November in the Northern Hemisphere, or from September to December in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  13 53.35   -3  5.4   5.371   4.388     8   12.7  18:41 ( 95,-12)  
Oct. 29  14  1.07   -3  4.1   5.376   4.403    10   12.7   4:52 (267,-10)  

* 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 12.4 mag (Oct. 1, Thomas Lehmann). In the Southen Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it will be observable after November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  10 12.81  -40 31.6   2.854   2.427    55   13.0   4:47 (324,  1)  
Oct. 29  10 10.63  -41  5.4   2.845   2.484    59   13.1   4:52 (329,  4)  

* 73P/Schwassmann-Wachmann 3

Outburst occured in early October. Now it is very bright as 10.4 mag (Oct. 15, Chris Wyatt). It stays observable in good condition in the Southern Hemisphere. It locates low in the Northern Hemisphere. Michael Jager detected several fragments at 17.5-19 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  18 57.13  -35 44.6   1.089   1.257    74   13.2  18:41 ( 22, 15)  
Oct. 29  19 35.93  -34 37.0   1.153   1.316    75   13.6  18:34 ( 18, 18)  

* C/2021 Y1 ( ATLAS )

Now it is 15.5 mag (Oct. 20, ATLAS-MLO, Mauna Loa). It is expected to brighten up to 12 mag from winter to summer in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 spring. In the Southern Hemisphere, it 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)  
Oct. 22   5  9.93   27 25.0   2.273   3.003   129   13.6   3:10 (  0, 83)  
Oct. 29   5  4.38   25 22.6   2.135   2.947   137   13.3   2:37 (  0, 80)  

* C/2019 U5 ( PanSTARRS )

Now it is 13.7 mag (Sept. 24, Hiroshi Abe). 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, although it becomes unobservable temporarily in October. 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)  
Oct. 22  13 39.15   12 34.8   4.788   3.895    23   13.4   4:47 (252, -3)  
Oct. 29  13 41.53   11 29.3   4.743   3.873    25   13.3   4:52 (258,  2)  

* C/2022 R2 ( ATLAS )

It brightened rapidly up to 12.4 mag in early October (Oct. 2, Michael Jager). Then it became fainter a bit, 13.0 mag (Oct. 9, Michael Jager). Although it is a tiny comet, it will approach to Sun down to 0.63 a.u. on Oct. 25. In the Northern Hemisphere, it is observable until late October. In the Southern Hemisphere, it is not observable after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  12 58.28   19 34.5   1.183   0.636    32   13.4   4:47 (252,  9)  
Oct. 29  13 41.93   14 11.1   1.302   0.638    28   13.6   4:52 (255,  4)  

* 29P/Schwassmann-Wachmann 1

Now it is 13.6 mag (Sept. 30. Hiroshi Abe).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   6 58.91   29  0.9   5.697   6.035   105   13.6   4:47 (336, 83)  
Oct. 29   6 59.25   29  3.7   5.593   6.037   112   13.6   4:32 (  0, 84)  

* 41P/Tuttle-Giacobini-Kresak

The condition is worst in this apparition. It is not observable at all.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  15  9.52  -12 24.4   2.048   1.171    20   13.8  18:41 ( 76, -2)  
Oct. 29  15 37.46  -14 16.8   2.090   1.214    20   14.4  18:34 ( 73, -1)  

* 117P/Helin-Roman-Alu 1

Now it is 14.7 mag (Oct. 14, Chris Wyatt). It stays observable at 13-14 mag for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  19  8.90  -30 14.7   3.156   3.085    76   14.3  18:41 ( 22, 21)  
Oct. 29  19 17.73  -29 52.1   3.253   3.091    71   14.4  18:34 ( 24, 21)  

* C/2020 R7 ( ATLAS )

Now it is 15.0 mag (Oct. 2, Ken-ichi Kadota). The brightness evolution is slower than originally expected. It stays 14-15 mag for a long time. It locates extremely low in the Northern Hemisphere. In the Southern Hemisphere, it will be unobservable temporarily in November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  16 54.67  -24 25.4   3.567   2.978    46   14.6  18:41 ( 51, 10)  
Oct. 29  16 58.86  -23  4.9   3.668   2.987    40   14.7  18:34 ( 55,  8)  

* 22P/Kopff

Now it is 14.5 mag (Oct. 14, Chris Wyatt). 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)  
Oct. 22   1  0.06   -1 45.4   1.562   2.531   163   14.7  22:56 (  0, 53)  
Oct. 29   0 55.06   -2  5.2   1.636   2.574   155   15.0  22:24 (  0, 53)  

* C/2022 A2 ( PanSTARRS )

Now it is 14.3 mag (Oct. 15, Ken-ichi Kadota). It is expected to brighten up to 12.5 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)  
Oct. 22  12 21.61   20  1.9   3.018   2.304    37   15.0   4:47 (257, 16)  
Oct. 29  12 32.45   21 15.7   2.882   2.249    42   14.8   4:52 (259, 21)  

* C/2021 X1 ( Maury-Attard )

Now it is 14.7 mag (Oct. 15, Ken-ichi Kadota). 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)  
Oct. 22   6 15.17  -19 37.1   3.419   3.828   106   15.0   4:15 (  0, 35)  
Oct. 29   6  5.62  -20 46.3   3.291   3.794   113   14.9   3:38 (  0, 34)  

* C/2020 S4 ( PanSTARRS )

Now it is 16.3 mag (Oct. 16, ATLAS-MLO, Mauna Loa). It will brighten up to 14 mag in early 2023, and it will be observable in good condition. It is fainter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   8 51.81   16 29.4   3.603   3.524    77   15.1   4:47 (296, 57)  
Oct. 29   8 59.10   16 29.5   3.489   3.505    82   15.0   4:52 (304, 61)  

* 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)  
Oct. 22  14 11.54  -10 50.0   2.796   1.811     6   15.2  18:41 ( 85,-13)  
Oct. 29  14 28.70  -12 38.5   2.771   1.781     4   15.1  18:34 ( 84,-14)  

* 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)  
Oct. 22  14 35.86  -16 27.0   3.255   2.299    13   15.1  18:41 ( 77,-11)  
Oct. 29  14 50.46  -17 38.4   3.284   2.314    10   15.2  18:34 ( 77,-13)  

* P/2022 L3 ( ATLAS )

Now it is 14.7 mag (Oct. 17, Michael Jager). 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)  
Oct. 22   2 35.85   20 11.8   1.447   2.421   164   15.1   0:37 (  0, 75)  
Oct. 29   2 29.45   21 15.5   1.434   2.420   170   15.1   0:03 (  0, 76)  

* C/2020 Y2 ( ATLAS )

Now it is 14.9 mag (Oct. 13, ATLAS South Africa). 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)  
Oct. 22   5 35.77  -52 39.1   3.047   3.361    99   15.2   3:36 (  0,  2)  
Oct. 29   5 16.14  -53 25.1   3.027   3.386   102   15.2   2:49 (  0,  2)  

* 119P/Parker-Hartley

Now it is 14.8 mag (Oct. 3, Ken-ichi Kadota). 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)  
Oct. 22   7 43.20   19  6.7   2.094   2.380    93   15.4   4:47 (318, 70)  
Oct. 29   7 50.53   19  2.0   2.021   2.390    99   15.3   4:52 (335, 73)  

* C/2021 T4 ( Lemmon )

Now it is 15.0 mag (Oct. 17, Michael Jager). 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)  
Oct. 22   2 31.89   -4 52.1   2.851   3.803   160   15.6   0:33 (  0, 50)  
Oct. 29   2 18.97   -6 24.9   2.785   3.735   160   15.4  23:47 (  0, 49)  

* 61P/Shajn-Schaldach

Now it is 14.6 mag (Oct. 19, Toshihiko Ikemura, Hirohisa Sato). It stays 15 mag until November, and it stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   1 24.32    0 57.5   1.141   2.126   168   15.6  23:21 (  0, 56)  
Oct. 29   1 21.00    0 20.4   1.159   2.126   161   15.6  22:50 (  0, 55)  

* (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 stays bright and observable in good condition until mid January

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   7  7.43   -3  4.1   0.091   1.013    98   15.8   4:47 (352, 51)  
Oct. 29   7 36.28    3 22.2   0.105   1.016    99   16.0   4:52 (353, 58)  

* C/2021 G2 ( ATLAS )

Now it is 16.5 mag (Oct. 20, ATLAS South Africa). 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)  
Oct. 22   9  3.80  -31 12.0   7.459   7.139    67   16.0   4:47 (330, 16)  
Oct. 29   9  6.69  -31 59.1   7.357   7.104    71   15.9   4:52 (336, 18)  

* 408P/2020 M7 ( Novichonok-Gerke )

Now it is 16.6 mag (Oct. 20, ATLAS-HKO, Haleakala). 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)  
Oct. 22   4 37.33    2 52.1   2.678   3.468   136   16.1   2:37 (  0, 58)  
Oct. 29   4 35.34    2  1.7   2.626   3.469   142   16.1   2:08 (  0, 57)  

* C/2021 S3 ( PanSTARRS )

Now it is 16.1 mag (Oct. 14, 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)  
Oct. 22   6 20.93  -30 43.9   5.433   5.722   101   16.3   4:20 (  0, 24)  
Oct. 29   6 20.09  -31 51.6   5.314   5.659   105   16.2   3:52 (  0, 23)  

* 327P/Van Ness

It brightened rapidly as predicted, and it brightened up to 14.0 mag in September (Sept. 22, Michael Jager). Now it is fading. But it is bright as 15.4 mag still now (Oct. 14, Chris Wyatt). It will be fainter than 18 mag in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   2 17.22  -35 21.9   0.787   1.637   133   16.3   0:18 (  0, 20)  
Oct. 29   2 16.30  -37 43.7   0.845   1.661   128   16.5  23:45 (  0, 17)  

* 157P/Tritton

Now it is 16.1 mag (Sept. 23, Michael Jager). It stays observable at 16 mag from summer to winter. It will be getting higher after this also in the Southern Hemisphere. Michael Jager discovered a 18-mag fragment.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   9 38.10   13 58.0   1.756   1.630    66   16.3   4:47 (288, 46)  
Oct. 29   9 53.12   11 48.0   1.723   1.649    68   16.4   4:52 (294, 48)  

* 9P/Tempel 1

Now it is 15.8 mag (Oct. 2, 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)  
Oct. 22  22 18.34  -25 19.4   1.917   2.541   118   16.5  20:16 (  0, 30)  
Oct. 29  22 20.78  -24 22.5   2.036   2.581   112   16.7  19:51 (  0, 31)  

* 44P/Reinmuth 2

Now it is 16.5 mag (Oct. 1, Ken-ichi Kadota). 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)  
Oct. 22   3 33.87   27 28.4   1.600   2.509   149   16.6   1:35 (  0, 83)  
Oct. 29   3 28.71   27  9.8   1.590   2.535   157   16.6   1:02 (  0, 82)  

* 395P/2020 H1 ( Catalina-NEAT )

Now it is 16.1 mag (Oct. 12, ATLAS-HKO, Haleakala). 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)  
Oct. 22  22 57.48   -3 20.8   3.573   4.344   135   16.7  20:54 (  0, 52)  
Oct. 29  22 56.84   -3 31.7   3.664   4.356   128   16.8  20:26 (  0, 52)  

* C/2020 F5 ( MASTER )

It brightened up to 14 mag in 2021. Now it is fading. It has already faded down to 15.7 mag (Oct. 17, W. Pei). It is observable at 16-17 mag in 2022.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  23 24.87   15 10.0   5.464   6.311   145   16.7  21:22 (  0, 70)  
Oct. 29  23 22.09   15  6.6   5.567   6.349   138   16.8  20:51 (  0, 70)  

* 77P/Longmore

It will brighten rapidly up to 14 mag in spring. In the Southern Hemisphere, it will appear in the morning sky in December, and 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)  
Oct. 22  12  4.39   10  2.3   3.359   2.577    32   16.9   4:47 (268, 14)  
Oct. 29  12 15.17    8 26.5   3.293   2.559    36   16.8   4:52 (272, 18)  

* 246P/NEAT

Now it is 15.8 mag (Oct. 19, Toshihiko Ikemura, Hirohisa Sato). It brightened up to 14 mag from 2020 to 2021. Now it is fading slowly. It is observable at 16-17 mag in 2022.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   0 13.41  -20  5.4   3.201   4.030   141   16.8  22:10 (  0, 35)  
Oct. 29   0 10.10  -19 55.4   3.280   4.047   135   16.9  21:39 (  0, 35)  

* C/2021 C5 ( PanSTARRS )

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

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  12 10.30  -39 55.1   4.169   3.412    35   16.9   4:47 (308,-16)  
Oct. 29  12 21.58  -41 50.0   4.129   3.392    37   16.9   4:52 (312,-13)  

* 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 16.5 mag (Oct. 19, Hirohisa Sato). 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)  
Oct. 22   1 42.00  -26 31.4   4.720   5.544   142   17.1  23:38 (  0, 29)  
Oct. 29   1 36.95  -26  8.2   4.792   5.587   139   17.1  23:06 (  0, 29)  

* C/2019 O3 ( Palomar )

Now it is 16.8 mag (Oct. 1, ATLAS-MLO, Mauna Loa). 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)  
Oct. 22  17 13.04   63 27.8   9.508   9.459    84   17.1  18:41 (148, 47)  
Oct. 29  17 15.66   63 10.8   9.521   9.473    84   17.1  18:34 (147, 45)  

* P/2021 N2 ( Fuls )

It brightened very rapidly up to 15.5 mag from last autumn to last winter (Nov. 2, 2021, Toshihiko Ikemura, Hirohisa Sato). Now it is fading slowly. It has already faded down to 16.9 mag (Oct. 20, ATLAS-HKO, Haleakala).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   6 48.46   12 18.9   3.903   4.284   105   17.1   4:47 (359, 67)  
Oct. 29   6 49.38   11 52.4   3.823   4.302   112   17.1   4:22 (  0, 67)  

* C/2019 T3 ( ATLAS )

Now it is 17.3 mag (Oct. 19, 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)  
Oct. 22  21 15.45    0 43.7   6.808   7.245   112   17.1  19:13 (  0, 56)  
Oct. 29  21 14.23   -0  4.4   6.949   7.272   105   17.2  18:44 (  0, 55)  

* C/2020 H6 ( ATLAS )

Now it is 16.6 mag (Oct. 2, 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)  
Oct. 22  16 11.07   37 45.3   6.026   5.586    59   17.1  18:41 (114, 36)  
Oct. 29  16 17.90   37 39.3   6.063   5.615    58   17.2  18:34 (115, 34)  

* C/2022 E2 ( ATLAS )

Now it is 17.8 mag (July 8, 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)  
Oct. 22  10 31.50  -18 34.2   7.486   6.850    47   17.2   4:47 (306, 14)  
Oct. 29  10 32.80  -18 48.1   7.361   6.805    52   17.2   4:52 (312, 19)  

* P/2022 P2 ( ZTF )

Now it is 18.0 mag (Oct. 2, M. Jaeger, E. Prosperi, S. Prosperi). It stays observable at 17 mag until winter. It will become observable in good condition also in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   9 17.25   15 45.7   2.298   2.194    71   17.2   4:47 (290, 51)  
Oct. 29   9 27.10   14 26.1   2.246   2.220    75   17.2   4:52 (298, 55)  

* C/2022 Q2 ( ATLAS )

Now it is 16.6 mag (Oct. 19, 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)  
Oct. 22  23 15.87  -14 56.3   1.268   2.094   134   17.2  21:10 (  0, 40)  
Oct. 29  22 41.70  -15 18.8   1.347   2.042   120   17.2  20:09 (  0, 40)  

* C/2022 L2 ( ATLAS )

Now it is 16.8 mag (Oct. 19, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 11-12 mag in 2024. In the Northern Hemisphere, it stays observable in good condition for a long time until 2023 autumn, although it becomes temporarily low in December. In the Southern Hemisphere, it becomes unobservable soon. But it will be observable in excellent condition at the high light.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  17 55.64   21  2.6   5.832   5.559    69   17.3  18:41 ( 81, 51)  
Oct. 29  17 56.30   20  4.6   5.862   5.507    64   17.2  18:34 ( 83, 46)  

* 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 17.7 mag (Oct. 3, Catalina Sky Survey). 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)  
Oct. 22   9 54.79   18 13.7   4.657   4.311    63   17.3   4:47 (280, 45)  
Oct. 29  10  0.47   18 18.3   4.573   4.327    69   17.3   4:52 (285, 51)  

* (3200) Phaethon

It approached to Sun down to 0.14 a.u. on May 15. But it was not observable around that time. In the Northern Hemisphere, it stays observable at 17-18 mag in good condition from July to November. In the Southern Hemisphere, it stays extremely low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   2 30.89   44 52.3   1.268   2.158   144   17.3   0:33 (180, 80)  
Oct. 29   2  9.03   43 15.8   1.274   2.191   149   17.3  23:36 (180, 82)  

* C/2021 QM45 ( PanSTARRS )

Now it is 17.1 mag (Oct. 3, Ken-ichi Kadota). In the Northern Hemisphere, it stays observable at 17 mag in good condition for a long time until winter. In the Southern Hemisphere, it stays extremely low for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   7 48.49   47 13.6   2.561   2.864    97   17.4   4:47 (219, 73)  
Oct. 29   7 57.26   47 39.7   2.504   2.882   102   17.4   4:52 (206, 76)  

* C/2020 U4 ( PanSTARRS )

Now it is 17.2 mag (Oct. 16, ATLAS-MLO, Mauna Loa). It stays observable at 17-18 mag in 2022. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   1 23.00   25 44.3   4.585   5.549   164   17.4  23:19 (  0, 81)  
Oct. 29   1 13.37   24 45.7   4.610   5.563   162   17.4  22:42 (  0, 80)  

* 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 15.9 mag (July 19, ATLAS-MLO, Mauna Loa). It will be fainter than 18 mag in January.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  12 32.31   28 53.0   6.585   5.902    43   17.5   4:47 (248, 19)  
Oct. 29  12 34.91   29 10.5   6.560   5.948    48   17.5   4:52 (251, 25)  

* C/2022 S3 ( PanSTARRS )

Now it is 17.4 mag (Oct. 17, 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)  
Oct. 22  20 11.61  -13 19.0   1.407   1.777    93   17.7  18:41 ( 10, 41)  
Oct. 29  20  9.73  -17 25.1   1.439   1.684    85   17.6  18:34 ( 16, 36)  

* 244P/Scotti

Now it is 18.5 mag (Oct. 19, ATLAS-MLO, Mauna Loa). 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)  
Oct. 22   6 31.78   25 48.6   3.452   3.922   111   17.6   4:32 (  0, 81)  
Oct. 29   6 32.77   25 52.1   3.358   3.921   117   17.6   4:05 (  0, 81)  

* 285P/LINEAR

It brightened by 6 mag in outburst in early August up to 14.6 mag (Aug. 13, ATLAS-MLO, Mauna Loa). Now it is fading. But it is bright as 16.1 mag still now (Oct. 1, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  19 21.08   -3  8.2   1.748   1.912    83   17.6  18:41 ( 31, 47)  
Oct. 29  19 34.35   -4 24.8   1.783   1.883    79   17.8  18:34 ( 33, 45)  

* C/2020 U5 ( PanSTARRS )

Now it is 17.9 mag (Oct. 19, Toshihiko Ikemura, Hirohisa Sato). It started fading before the perihelion passage. It was predicted to stay at 16 mag for a long time. But actually, it will be fainter than 18 mag soon. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until 2023.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22  17 56.59   45 19.1   4.127   4.067    79   17.7  18:41 (121, 57)  
Oct. 29  18  3.51   42 58.9   4.195   4.091    77   17.7  18:34 (117, 54)  

* 204P/LINEAR-NEAT

Now it is 18.0 mag (Oct. 16, ATLAS-MLO, Mauna Loa). 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)  
Oct. 22   8 27.91   17  4.4   1.681   1.849    83   17.9   4:47 (302, 61)  
Oct. 29   8 42.75   16 31.2   1.612   1.842    86   17.7   4:52 (310, 64)  

* P/2021 V2 ( Fuls )

Now it is 19.0 mag (Oct. 14, J. L. Virlichie, P. Traverse, H. Roy, G. Houdin). It is observable at 17 mag in excellent condition in winter. It is fainter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   8 39.50    6 60.0   3.628   3.558    78   17.8   4:47 (311, 52)  
Oct. 29   8 45.12    6 10.1   3.524   3.549    83   17.7   4:52 (321, 55)  

* C/2022 P3 ( ZTF )

Now it is 17.5 mag (Oct. 1, Ken-ichi Kadota). 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)  
Oct. 22   7 54.89   48 41.4   2.423   2.722    96   17.8   4:47 (218, 71)  
Oct. 29   8  3.80   51 28.1   2.370   2.748   101   17.8   4:52 (202, 72)  

* C/2022 A3 ( Lemmon-ATLAS )

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)  
Oct. 22  10 29.39   10 40.9   5.281   4.751    53   17.9   4:47 (282, 34)  
Oct. 29  10 31.35    9 41.4   5.144   4.715    59   17.8   4:52 (288, 40)  

* C/2019 E3 ( ATLAS )

Now it is 17.5 mag (Oct. 2, ATLAS South Africa). 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)  
Oct. 22   8 19.66  -70  6.8  10.702  10.521    76   17.9   4:47 (352,-16)  
Oct. 29   8 17.33  -70 57.7  10.692  10.513    77   17.9   4:52 (355,-16)  

* 107P/(4015) Wilson-Harrington

Now it is 17.1 mag (Oct. 1, Toshihiko Ikemura, Hirohisa Sato). In 2022, it stays observable at 17 mag for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 22   8 10.85   21 36.0   0.777   1.242    88   17.9   4:47 (301, 67)  
Oct. 29   8 18.83   20 48.5   0.784   1.298    93   17.9   4:52 (314, 71)  

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