Weekly Information about Bright Comets (2020 Nov. 21: North)

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Updated on November 24, 2020
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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/2020 S3 ( Erasmus )

Now it is very bright as 6.9 mag (Nov. 21, Seiichi Yoshida). It will approach to Sun down to 0.4 a.u. on Dec. 13, and will brighten up to 6 mag. It will be unobservable soon.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  12 58.81  -20 15.9   1.041   0.683    39    7.4   5:12 (307, 13)  
Nov. 28  14  3.44  -22 50.0   1.081   0.555    30    6.6   5:17 (304,  6)  

* C/2020 M3 ( ATLAS )

Now it is very bright as 7.6 mag (Nov. 22, Carlos Labordena). In the Northern Hemisphere, it stays observable in excellent condition for a long time. In the Southern Hemisphere, it will be low in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   5 27.03   13 11.8   0.365   1.327   155    7.8   1:27 (  0, 68)  
Nov. 28   5 25.80   21 58.9   0.386   1.361   163    8.0   0:59 (  0, 77)  

* 88P/Howell

Now it is 9.4 mag (Nov. 15, Chris Wyatt). It stays observable in the evening low sky after this while it will be getting fainter gradually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  20  4.74  -24 11.5   1.716   1.483    59    9.8  18:19 ( 34, 23)  
Nov. 28  20 29.55  -22 46.6   1.780   1.515    58   10.1  18:18 ( 35, 24)  

* 156P/Russell-LINEAR

Brightened rapidly. Now it is very bright as 9.7 mag (Nov. 15, Chris Wyatt). It is observable at 10-11 mag in excellent condition from October to November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  23 48.37    1  7.6   0.538   1.334   118   10.2  19:46 (  0, 57)  
Nov. 28  23 58.45    6 24.2   0.569   1.338   116   10.5  19:29 (  0, 62)  

* C/2019 N1 ( ATLAS )

It brightened up to 13.5 mag in summer (July 31, Ken-ichi Kadota). It is expected to brighten up to 12 mag from autumn to winter. In the Southern Hemisphere, it will appear in the morning sky in December, then it stays observable in good condition. In the Northern Hemisphere, it will be observable in the extremely low sky only from November to December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  13 46.96  -15 51.8   2.510   1.711    28   12.6   5:12 (295,  7)  
Nov. 28  13 54.00  -19 49.8   2.442   1.705    33   12.6   5:17 (303, 10)  

* 398P/2020 P2 ( Boattini )

First return of a new periodic comet which brightened up to 13 mag in 2009. Now it is bright as 13.5 mag (Nov. 21, Seiichi Yoshida). It is expected to brighten up to 12 mag and to be observable in excellent condition in winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   4 20.81  -13 14.3   0.433   1.368   145   12.9   0:21 (  0, 42)  
Nov. 28   4 23.33  -12 52.9   0.411   1.346   145   12.7  23:52 (  0, 42)  

* 29P/Schwassmann-Wachmann 1

Jean-Franois Soulier and Nick James discovered its new outburst on Nov. 19. Now it is bright as 12.6 mag (Nov. 20, Maik Meyer).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   2 24.89   26 10.4   4.899   5.838   160   13.2  22:21 (  0, 81)  
Nov. 28   2 21.94   25 50.4   4.940   5.840   153   13.2  21:51 (  0, 81)  

* 141P/Machholz 2

It was expected to brighten very rapidly, and brighten up to 11 mag from December to January. But actually it is much fainter than this ephemeris. Now it is fainter than 16.5 mag (Nov. 21, Michael Jager). It stays observable for a long time in this apparition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  19 25.48  -10 27.0   1.025   0.906    53   13.9  18:19 ( 51, 29)  
Nov. 28  19 51.13  -10 11.5   0.954   0.861    52   13.2  18:18 ( 51, 29)  

* 11P/Tempel-Swift-LINEAR

Brightened very rapidly. Now it is very bright as 13.4 mag (Nov. 6, Michael Jager). It approaches to Earth down to 0.5 a.u. in November, and it is observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   0 27.44   14 34.4   0.517   1.390   132   13.5  20:25 (  0, 70)  
Nov. 28   0 44.37   12 14.3   0.539   1.389   128   13.6  20:15 (  0, 67)  

* C/2017 T2 ( PanSTARRS )

Now it is 11.2 mag (Sept. 11, Carlos Labordena). Now it is not observable. It will appear in the morning sky at 14.5 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  16  1.98  -19 38.9   3.976   2.991     3   13.7  18:19 ( 76,-15)  
Nov. 28  16 10.92  -20 55.5   4.044   3.058     1   13.8   5:17 (284,-17)  

* C/2020 F3 ( NEOWISE )

It approached to Sun down to 0.29 a.u. on July 3, and it brightened up to 0.6 mag (Alan Hale). Now it is fading. It has faded down to 11.3 mag in September (Sept. 27, Mitsunori Tsumura). Now it is not observable. It will appear in the morning sky at 16 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  15 55.99  -19 41.2   3.691   2.704     2   14.3  18:19 ( 77,-16)  
Nov. 28  16  2.07  -20 22.9   3.785   2.801     3   14.6   5:17 (285,-15)  

* 246P/NEAT

It stays 13-14 mag from 2020 to 2021. It is not observable until January.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  15 37.96  -14 16.9   3.889   2.909     5   14.4   5:12 (278,-13)  
Nov. 28  15 49.50  -15 12.9   3.873   2.902     8   14.4   5:17 (282, -9)  

* C/2020 P1 ( NEOWISE )

Now it is 12.5 mag (Oct. 28, Michael Jager). In the Northern Hemisphere, appearing in the morning sky. It stasy observable after this while the comet will be fading rapidly. In the Southern Hemipshere, it will never be observable again.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  14 34.12    8 37.2   1.522   0.888    33   14.4   5:12 (268, 13)  
Nov. 28  14 48.75    7 48.7   1.643   1.027    36   15.2   5:17 (272, 16)  

* C/2017 K2 ( PanSTARRS )

Now it is 14.0 mag (Nov. 11, Toshihiko Ikemura, Hirohisa Sato). It is expected to be observable at 5-6 mag for a long time from 2022 to 2023. In the Northern Hemisphere, it is not observable at the high light from 2022 summer to 2023 summer. In the Southern Hemisphere, it is not observable now. But it will be observable in good condition at the high light.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  17 27.91   37  5.8   8.173   7.755    61   14.5  18:19 (115, 32)  
Nov. 28  17 31.92   36 34.6   8.138   7.701    60   14.4  18:18 (117, 28)  

* C/2019 L3 ( ATLAS )

Now it is 13.9 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 12 mag in winter in 2022. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until 2021 November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  23 54.75   62 27.2   4.499   5.094   122   14.5  19:52 (180, 62)  
Nov. 28  23 54.55   61 32.5   4.483   5.053   120   14.5  19:24 (180, 63)  

* C/2019 F1 ( ATLAS-Africano )

Now it is 14.8 mag (May 14, Toshiyuki Takahashi). It will brighten up to 13 mag in 2021. In the Southern Hemisphere, it becomes too low to observe temporarily from mid October to mid December. In the Northern Hemisphere, it is not observable until July in 2022.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  15 21.55  -39  5.7   4.992   4.077    19   14.6   5:12 (303,-23)  
Nov. 28  15 30.64  -40 17.8   4.952   4.048    21   14.5   5:17 (306,-19)  

* C/2018 N2 ( ASASSN )

Now it is 14.3 mag (Nov. 5, Sandor Szabo). In the Northern Hemisphere, it stays observable for a long time while it is getting fainter slowly. In the Southern Hemisphere, it will never be observable again.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  15 41.94   60 42.3   4.755   4.696    80   15.2   5:12 (213, 27)  
Nov. 28  15 50.08   60 14.4   4.783   4.742    81   15.3   5:17 (215, 29)  

* C/2020 F5 ( MASTER )

Now it is 15.0 mag (Nov. 15, Chris Wyatt). It stays 14-15 mag until 2021. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until June in 2021.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  19 19.16  -63 41.1   4.916   4.444    56   15.2  18:19 ( 19,-15)  
Nov. 28  19 34.46  -62 25.9   4.954   4.432    53   15.2  18:18 ( 21,-15)  

* C/2020 J1 ( SONEAR )

Now it is 14.9 mag (Oct. 10, Chris Wyatt). It will brighten up to 13.5 mag in spring in 2021. In the Southern Hemisphere, it stays observable in good condition for a long time, although it becomes unobservable temporarily in December. In the Northern Hemisphere, it is not observable until spring in 2021.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  17 22.23  -45 53.5   4.423   3.630    32   15.3  18:19 ( 44,-15)  
Nov. 28  17 25.29  -45  9.1   4.450   3.606    27   15.3  18:18 ( 47,-18)  

* 17P/Holmes

Now it is 15.8 mag (Nov. 5, Ken-ichi Kadota). It is observable only until mid December in the Southern Hemisphere, or mid January in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  19 50.83  -23 46.8   2.582   2.196    56   15.5  18:19 ( 37, 21)  
Nov. 28  20  4.26  -22 24.8   2.632   2.179    52   15.4  18:18 ( 40, 21)  

* C/2018 U1 ( Lemmon )

Now it is 15.9 mag (Nov. 10, Toshihiko Ikemura, Hirohisa Sato). It will stay at 14 mag for a long time from 2021 to 2022. In the Northern Hemisphere, it stays observable in good condition while brightening gradually, although it becomes unobservable temporarily in December. In the Southern Hemisphere, it is not observable until February.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  17 41.19    8 59.3   6.366   5.650    40   15.5  18:19 ( 86, 21)  
Nov. 28  17 44.28    8  9.6   6.387   5.625    36   15.5  18:18 ( 89, 16)  

* C/2020 N1 ( PanSTARRS )

Now it is 16.3 mag (Nov. 14, Y. Sugiyama). It will brighten up to 13.5 mag from winter to spring in 2021. In the Northern Hemisphere, it stays observable in excellent condition. In the Southern Hemisphere, it stays extremely low until spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  23 22.97   44  6.1   1.376   2.065   120   15.8  19:20 (180, 81)  
Nov. 28  23 25.25   42 15.7   1.346   1.994   116   15.6  18:55 (180, 83)  

* C/2019 U6 ( Lemmon )

It brightened up to 6.0 mag in June (June 13, Marco Goiato). Now it is fading. It has already faded down to 15.7 mag (Nov. 12, Toshihiko Ikemura, Hirohisa Sato). In the Northern Hemisphere, it stays observable for a long time until it fades out. In the Southern Hemisphere, it will never be observable again.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  18 12.66   23 42.5   2.981   2.568    56   15.7  18:19 ( 96, 36)  
Nov. 28  18 26.19   24  1.7   3.088   2.653    55   16.0  18:18 ( 98, 33)  

* (3200) Phaethon

It will approach to Sun down to 0.14 a.u. on Dec. 7, and will brighten up to 11 mag. But it is not observable at the high light.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  13 29.11  -14 35.8   0.678   0.561    33   16.1   5:12 (297, 12)  
Nov. 28  14 43.76  -21 37.6   0.801   0.380    21   15.8   5:17 (297,  0)  

* C/2019 T4 ( ATLAS )

Now it is 15.4 mag (Nov. 4, Giuseppe Pappa). It is expected to brighten up to 13 mag in 2022. In 2020, it is observable in excellent condition in the Southern Hemisphere. In the Northern Hemisphere, it is observable from autumn to winter, but it locating extremely low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   8 32.80  -36 48.5   6.093   6.205    91   15.9   4:32 (  0, 18)  
Nov. 28   8 33.15  -37 34.4   5.990   6.167    95   15.8   4:05 (  0, 17)  

* 162P/Siding Spring

Now it is 15.1 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It stays 15-16 mag until winter. In the Northern Hemisphere, it stays observable in good condition for a long time after this. In the Southern Hemisphere, it will be getting lower after this, and it will be unobservable in January.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  22  9.28  -23 27.4   0.901   1.304    87   15.9  18:19 (  3, 32)  
Nov. 28  22 23.96  -17 46.2   0.921   1.294    85   15.9  18:18 (  7, 37)  

* C/2019 K7 ( Smith )

Now it is 15.6 mag (Nov. 5, Sandor Szabo). It stays 15-16 mag for a long time until 2021. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it will be observable in the extremely low sky only in next spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  18 32.18   19 14.9   5.126   4.653    56   15.9  18:19 ( 88, 37)  
Nov. 28  18 34.98   19 30.7   5.194   4.669    53   16.0  18:18 ( 92, 33)  

* C/2019 T2 ( Lemmon )

Now it is 16.3 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 14.5 mag from spring to summer in 2021. In the Southern Hemisphere, it stays observable in excellent condition for a long time. In the Northern Hemisphere, it is observable in good condition in 2020, however, it will be unobservable in 2021.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  21 13.42  -30  4.6   3.221   3.085    73   15.9  18:19 ( 16, 23)  
Nov. 28  21 14.32  -30 59.1   3.307   3.049    66   15.9  18:18 ( 21, 20)  

* P/2020 U1 ( Lemmon )

First return of a new periodic comet which brightened up to 17 mag in 2013. Now it is 17.2 mag (Nov. 10, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 16 mag and will be observable in good condition in winter. In the Southern Hemisphere, it locates low until December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   9 41.00   37 36.0   0.506   1.207   103   16.3   5:12 (244, 84)  
Nov. 28  10 23.61   35  1.8   0.484   1.176   100   16.1   5:17 (267, 82)  

* C/2018 F4 ( PanSTARRS )

It brightened up to 13.5 mag in last winter (Dec. 6, 2019, Chris Wyatt). Now it is fading slowly. Now it is 16.3 mag (Nov. 13, Martin Masek). In the Southern Hemisphere, it stays observable for a long time. It locates somewhat low in the Northern Hemisphere. Taras Prystavski found its fragmentation on Sept. 12.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   1 34.35  -32 59.3   4.131   4.682   118   16.1  21:30 (  0, 22)  
Nov. 28   1 28.38  -31 40.1   4.242   4.723   113   16.3  20:57 (  0, 24)  

* 84P/Giclas

Now it is 16.0 mag (Nov. 10, Toshihiko Ikemura, Hirohisa Sato). It stays 16 mag until winter, and observable in good condition. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   8 41.23   17 35.8   1.745   2.290   110   16.3   4:41 (  0, 73)  
Nov. 28   8 43.13   17 50.0   1.701   2.327   117   16.4   4:15 (  0, 73)  

* C/2017 B3 ( LINEAR )

It brightened up to 13.8 mag in autumn in 2019 (Sept. 3, 2019, Chris Wyatt). Now it is fading slowly. It has already faded down to 16.5 mag (Nov. 8, Toshihiko Ikemura, Hirohisa Sato). But it is still bright visually as 14.8 mag (Nov. 5, Sandor Szabo).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  23 43.85    2 35.0   6.135   6.662   118   16.3  19:41 (  0, 58)  
Nov. 28  23 42.84    2 48.4   6.284   6.704   111   16.4  19:12 (  0, 58)  

* C/2019 T3 ( ATLAS )

Now it is 16.4 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It is observable at 16.5-17 mag from 2020 to 2021. In the Southern Hemisphere, it is not observable until summer in 2021

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  22  4.27   59 30.6   5.590   5.989   109   16.5  18:19 (175, 65)  
Nov. 28  22  3.81   57 39.4   5.632   5.984   106   16.5  18:18 (165, 66)  

* C/2020 R4 ( ATLAS )

Now it is 17.3 mag (Nov. 10, Toshihiko Ikemura, Hirohisa Sato). It will approach to Earth down to 0.46 a.u. in 2021 April, and it is expected to brighten up to 12.5 mag and to be observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  22 20.11  -22 26.7   1.613   1.889    89   16.8  18:19 (  1, 33)  
Nov. 28  22  2.64  -22  6.1   1.709   1.806    79   16.7  18:18 ( 13, 32)  

* C/2019 O3 ( Palomar )

Now it is 16.6 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It stays at 16-17 mag from 2020 to 2021. In the Northern Hemisphere, it stays observable in good condition for a long time. It is not observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  19  1.42   29 21.8   9.163   8.841    68   16.8  18:19 ( 97, 48)  
Nov. 28  19  3.55   29 20.7   9.215   8.839    64   16.8  18:18 (100, 43)  

* 397P/2020 M2 ( Lemmon )

First return of a new periodic comet which brightened up to 17.5 mag in 2012. Now it is 17.2 mag (Nov. 13, D. Buczynski). It stays observable at 17 mag in good condition from summer to winter. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   5  5.69   38 28.0   1.598   2.527   154   17.1   1:06 (180, 87)  
Nov. 28   4 58.99   38 44.0   1.597   2.548   160   17.1   0:32 (180, 86)  

* 117P/Helin-Roman-Alu 1

Now it is 16.1 mag (Nov. 13, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 13 mag in 2022. In 2021, it is observable at 15-16 mag in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  12 54.38    1  5.0   4.608   4.002    47   17.2   5:12 (291, 28)  
Nov. 28  13  0.88    0 27.3   4.511   3.986    52   17.1   5:17 (296, 33)  

* C/2019 C1 ( ATLAS )

It brightened up to 16.1 mag in last winter (Mar. 18, Toshihiko Ikemura, Hirohisa Sato). In 2021, it stays observable at 17 mag in good condition until summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  12 45.07  -18 47.6   7.407   6.714    42   17.1   5:12 (308, 16)  
Nov. 28  12 49.48  -19  5.7   7.339   6.723    48   17.1   5:17 (314, 20)  

* 277P/LINEAR

Now it is 17.1 mag (Nov. 8, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 17 mag in December. It is observable in good condition. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   2 15.03   38 27.0   1.003   1.936   152   17.3  22:12 (180, 87)  
Nov. 28   2 14.11   36 37.8   1.010   1.926   149   17.2  21:43 (180, 88)  

* C/2020 H4 ( Leonard )

It was expected to brighten very rapidly, and brighten up to 14.5 mag from August to September. However, its current brightness is very uncertain. It could not be detected as fainter than 18.0 mag on June 30 (Charles S. Morris), and fainter than 15.7 mag on July 13 (Sandor Szabo). However, Giuseppe Pappa reported as 14 mag on July 10, and Thomas Lehmann reported it is bright as 15.2 mag on July 12. In the Northern Hemisphere, it stays observable for a long time. It is getting higher gradually after this also in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  10 39.11  -13  5.5   1.662   1.674    73   17.3   5:12 (333, 38)  
Nov. 28  10 32.24  -17 41.0   1.639   1.761    80   17.5   5:17 (346, 36)  

* 173P/Mueller 5

Now it is 17.1 mag (Oct. 25, D. Buczynski). It is observable at 17-18 mag for a long time from late 2019 to early 2021. It will fade out before it passes the perihelion.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   5 55.93   17  2.8   3.645   4.522   149   17.4   1:56 (  0, 72)  
Nov. 28   5 52.60   17 13.0   3.588   4.512   156   17.3   1:25 (  0, 72)  

* C/2020 M5 ( ATLAS )

Now it is 17.2 mag (Oct. 25, A. Mickleburgh). It stays 15-16 mag for a long time from 2021 spring to 2022 spring. It stays observable for a long time in the Northern Hemisphere. In the Southern Hemipsphere, it is not observable until the end of 2021.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  19 25.19   45 27.3   4.004   3.989    82   17.5  18:19 (121, 55)  
Nov. 28  19 25.99   44 45.8   4.015   3.947    78   17.5  18:18 (120, 51)  

* 257P/Catalina

Now it is 17.3 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this, and will be fainter than 18 mag in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  21 36.46   -0 38.9   2.023   2.211    87   17.5  18:19 ( 19, 53)  
Nov. 28  21 48.67   -0 51.8   2.113   2.225    83   17.6  18:18 ( 24, 52)  

* 115P/Maury

It brightened up to 14.6 mag in summer (July 18, Thomas Lehmann). Now it is 17.4 mag (Nov. 8, Toshihiko Ikemura, Hirohisa Sato). It stays observable until December when it becomes fainter than 18 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  21 10.70  -13  7.3   2.277   2.274    77   17.6  18:19 ( 22, 39)  
Nov. 28  21 23.49  -12 42.1   2.379   2.299    73   17.8  18:18 ( 26, 38)  

* C/2020 R7 ( ATLAS )

Now it is 17.9 mag (Nov. 19, Giuseppe Pappa). It is expected to brighten up to 12 mag in 2022. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until 2022.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   3 47.56  -49 43.4   6.260   6.669   110   17.7  23:43 (  0,  5)  
Nov. 28   3 39.50  -50  7.6   6.246   6.620   108   17.7  23:07 (  0,  5)  

* P/2020 V1 ( LONEOS-Hill )

First return of a new periodic comet which brightened up to 14-15 mag in 2006. Now it is 18.1 mag (Nov. 20, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 15-16 mag from February to March, and it will be observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  10 18.21    3 33.3   1.737   1.903    83   18.0   5:12 (331, 55)  
Nov. 28  10 33.49    2 55.2   1.647   1.876    87   17.7   5:17 (338, 56)  

* 178P/Hug-Bell

Now it is 17.0 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 17.5-18 mag in good condition until winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21   7 55.67   18 20.4   1.483   2.169   121   17.7   3:55 (  0, 73)  
Nov. 28   7 56.54   18 55.0   1.443   2.197   128   17.7   3:29 (  0, 74)  

* C/2020 T2 ( Palomar )

Now it is 17.5 mag (Nov. 12, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 14 mag from spring to summer, and it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until late December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  12 14.06   25 42.2   3.566   3.339    68   18.0   5:12 (271, 50)  
Nov. 28  12 23.99   25 27.9   3.428   3.282    73   17.8   5:17 (275, 55)  

* 254P/McNaught

Now it is 17.5 mag (Nov. 10, ATLAS-MLO, Mauna Loa). It stays 18 mag until November. It is observable in excellent condition in the Southern Hemisphere. It locates very low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 21  23 10.50  -34 22.1   2.907   3.150    94   17.9  19:08 (  0, 21)  
Nov. 28  23 15.00  -33 36.3   2.999   3.154    89   18.0  18:45 (  0, 22)  

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