Weekly Information about Bright Comets (2019 Nov. 23: North)

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Updated on November 24, 2019
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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 T2 ( PanSTARRS )

Now it is 10.8 mag (Nov. 23, Marco Goiato). It is expected to brighten up to 8 mag in 2020. It stays observable in good condition for a long time in the Northern Hemisphere. In the Southern Hemisphere, it will be unobservable soon. Then it is not observable until July.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   5 12.10   43 14.6   1.740   2.650   151   10.2   1:08 (180, 82)  
Nov. 30   4 58.50   45 56.3   1.660   2.585   154   10.0   0:27 (180, 79)  

* C/2018 N2 ( ASASSN )

Now it is 11.2 mag (Nov. 18, Juan Jose Gonzalez). It stays bright as 11 mag until winter. It stays observable in good condition for a long time in the Northern Hemisphere. In the Southern Hemisphere, it will be unobservable soon. Then it will never be observable again.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  23 59.93   39  6.7   2.430   3.127   127   11.4  19:51 (180, 86)  
Nov. 30  23 50.13   39  9.6   2.515   3.130   120   11.5  19:14 (180, 86)  

* C/2018 W2 ( Africano )

It brightened up to 8.3 mag in September (Sept. 20, Maik Meyer). Now it is fading. It has already faded down to 13.1 mag (Nov. 19, Chris Wyatt). In the Southern Hemisphere, it stays observable for a long time after this. In the Northern Hemisphere, it will be unobservable in early December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  21 34.80  -43 19.3   1.838   1.820    73   12.6  18:19 (  9, 11)  
Nov. 30  21 37.03  -44  7.1   2.021   1.877    67   12.9  18:18 ( 14,  9)  

* 260P/McNaught

Now it is 11.7 mag (Nov. 4, Sandor Szabo). It will fade out rapidly after this. It is observable in excellent condition in the Northern Hemisphere. It stays locating extremely low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   2 24.27   49 33.8   0.721   1.635   145   13.1  22:16 (180, 75)  
Nov. 30   2 23.56   48 42.8   0.771   1.673   144   13.5  21:48 (180, 76)  

* 29P/Schwassmann-Wachmann 1

Now it is 14.7 mag (Nov. 19, Chris Wyatt).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   0 25.89   13 26.8   5.090   5.780   130   13.2  20:18 (  0, 69)  
Nov. 30   0 25.16   13 13.3   5.180   5.780   123   13.3  19:50 (  0, 68)  

* 68P/Klemola

Now it is 13.9 mag (Oct. 26, Toshihiko Ikemura, Hirohisa Sato). It will be fading slowly after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  20 28.93  -15 32.5   1.966   1.800    65   14.1  18:19 ( 34, 32)  
Nov. 30  20 47.62  -15  4.0   2.025   1.807    63   14.2  18:18 ( 36, 32)  

* C/2018 A6 ( Gibbs )

Now it is 14.7 mag (Nov. 19, Chris Wyatt). It will be fading slowly after this. In the Southern Hemisphere, it becomes low from February to March, but it stays observable for a long time. In the Northern Hemisphere, it is not observasble until summer in 2020.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  20 54.32  -74 40.8   3.492   3.233    66   14.6  18:19 (  6,-20)  
Nov. 30  21 11.90  -71 43.5   3.562   3.255    64   14.6  18:18 (  8,-18)  

* 114P/Wiseman-Skiff

Now it is 15.3 mag (Nov. 5, Katsumi Yoshimoto). It brightens up to 14 mag in winter. It is observable in excellent 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)  
Nov. 23   2 11.79   41  9.5   0.734   1.665   150   14.8  22:04 (180, 84)  
Nov. 30   2 12.77   38 34.5   0.724   1.644   147   14.6  21:37 (180, 87)  

* 160P/LINEAR

Now it is 14.8 mag (Oct. 30, Toshihiko Ikemura, Hirohisa Sato). It stays at 14.5-15 mag until December. It is observable in good 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)  
Nov. 23  20 46.69  -15 50.6   1.874   1.789    69   14.7  18:19 ( 29, 34)  
Nov. 30  21  2.17  -13 55.6   1.930   1.787    66   14.7  18:18 ( 33, 35)  

* 155P/Shoemaker 3

Now it is 15.4 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato). It is observable at 14.5 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)  
Nov. 23  10  9.03   14  5.0   1.494   1.804    90   14.9   5:13 (328, 66)  
Nov. 30  10 23.16   13 23.9   1.441   1.809    94   14.8   5:18 (340, 67)  

* 78P/Gehrels 2

Now it is 16.3 mag (Nov. 2, Toshihiko Ikemura, Hirohisa Sato). It is fainter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   9 34.16    7  2.2   2.406   2.703    96   14.9   5:13 (352, 62)  
Nov. 30   9 37.29    6 29.5   2.344   2.735   102   15.0   5:04 (  0, 61)  

* C/2016 M1 ( PanSTARRS )

It brightened up to 7.7 mag in June in 2018 (June 19, Juan Jose Gonzalez). Now it is fading. It has already faded down to 15.1 mag (Nov. 6, Toshihiko Ikemura, Hirohisa Sato). In the Southern Hemisphere, it stays observable for a long time until the comet will fade out. In the Northern Hemisphere, it stays low for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   6 39.94  -34 35.4   4.857   5.310   112   14.9   2:35 (  0, 20)  
Nov. 30   6 33.69  -34 35.6   4.864   5.366   115   14.9   2:01 (  0, 20)  

* 2I/2019 Q4 ( Borisov )

Now it is 15.6 mag (Nov. 6, Toshihiko Ikemura, Hirohisa Sato). The orbit is extremely hyperbolic with e=3.35. It is the first interstellar comet in history. It brightens up to 15 mag in December. In the Northern Hemisphere, it stays observable in good condition until early December. Then it will be getting lower, and it will be unobservable in mid January. In the Southern Hemisphere, it will be getting higher gradually. Then it will be observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  11  1.87   -6 39.3   2.125   2.036    71   15.2   5:13 (325, 42)  
Nov. 30  11 13.90  -11 48.7   2.057   2.016    73   15.1   5:18 (334, 39)  

* C/2017 B3 ( LINEAR )

Now it is 14.7 mag (Nov. 19, Chris Wyatt). In the Southern Hemisphere, it is observable for a long time. It stays low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  22 51.89  -32 38.1   4.532   4.657    91   15.3  18:44 (  0, 23)  
Nov. 30  22 52.78  -31 12.0   4.665   4.688    85   15.3  18:18 (  0, 24)  

* C/2019 K1 ( ATLAS )

In the Southern Hemisphere, it is observable at 14.5 mag from winter to spring. In the Northern Hemisphere, it is not observable until August when it fades down to 17 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  15 59.79  -55 45.2   2.968   2.240    35   15.4  18:19 ( 41,-32)  
Nov. 30  16 13.48  -57 56.8   2.919   2.205    36   15.3   5:18 (322,-32)  

* C/2018 F4 ( PanSTARRS )

Now it is 15.0 mag (July 21, Taras Prystavski). It stays 16 mag for a long time from 2019 to 2020. It stays observable for a long time in the Southern Hemisphere. It is hardly observable in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  13 25.84  -79  3.4   3.807   3.441    61   15.8   5:13 (349,-29)  
Nov. 30  13 58.50  -81 37.8   3.795   3.440    61   15.8   5:18 (351,-31)  

* 101P/Chernykh

Now it is 14.8 mag (Nov. 4, Sandor Szabo). It stays 15-16 mag until December, and it is observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  23 49.54   -8 18.6   1.806   2.385   113   15.8  19:42 (  0, 47)  
Nov. 30  23 54.15   -7 34.1   1.873   2.375   108   15.9  19:19 (  0, 48)  

* C/2017 M4 ( ATLAS )

Now it is 14.8 mag (Aug. 28, Chris Wyatt). It will be fading slowly after this. In the Southern Hemisphere, it stays observable in good condition for a long time, although it becomes low from October to November. It will never be observable after this in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  14 17.05  -53 46.3   5.069   4.336    38   15.9   5:13 (323,-20)  
Nov. 30  14 20.89  -55  5.6   5.080   4.377    40   15.9   5:18 (327,-17)  

* 289P/Blanpain

It brighted rapidly from 20.5 mag up to 18.5 mag in September. However, the brightness evolution has stopped since October. Now it is very faint as 18.9 mag (Nov. 21, Katsumi Yoshimoto). It will approaches to Earth down to 0.09 a.u. in early January. It will be obesrvable in excellent condition in the Northern Hemisphere. If it is as bright as in 2003, it will be 17.5 mag at best. But if it shows cometary activity, it may brighten up to 13.5 mag. In the Southern Hemisphere, it will not be observable at the high light.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  22 24.79  -19 14.8   0.313   1.040    90   16.3  18:19 (  0, 36)  
Nov. 30  22 29.62  -16 25.6   0.280   1.006    85   16.0  18:18 (  7, 39)  

* 168P/Hergenrother

It has not been observed yet in this apparition. Now it is fainter than 21.5 mag (Aug. 4, Erwin Schwab). It was expected to brighten up to 12 mag from August to September. But actually, it must be much fainter than expected. 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)  
Nov. 23   7 35.68   60 37.7   1.078   1.824   123   16.2   3:31 (180, 64)  
Nov. 30   7 28.39   61 40.6   1.089   1.871   128   16.8   2:57 (180, 63)  

* C/2017 K2 ( PanSTARRS )

Now it is 16.2 mag (Oct. 25, Thomas Lehmann). 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 stays unobservable for a while. 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. 23  17 28.57   46 31.5  10.683  10.390    70   16.3  18:19 (126, 34)  
Nov. 30  17 32.17   46 10.6  10.645  10.342    69   16.3  18:18 (127, 31)  

* 246P/NEAT

Now it is 17.4 mag (Nov. 3, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 13.5-14 mag from 2020 to 2021. It stays observable in good condition for a long time after this until 2020 summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  12 25.92   12 55.9   4.037   3.653    60   16.4   5:13 (286, 42)  
Nov. 30  12 33.04   12 31.3   3.930   3.635    65   16.3   5:18 (292, 47)  

* C/2018 DO4 ( Lemmon )

Now it is 15.3 mag (Nov. 4, Sandor Szabo). It is observable at 16 mag in good condition from October to November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   2 23.78   -1  1.3   1.709   2.610   149   16.3  22:13 (  0, 54)  
Nov. 30   2  1.05   -3 14.9   1.825   2.639   137   16.5  21:24 (  0, 52)  

* C/2019 N1 ( ATLAS )

Now it is 16.7 mag (Nov. 1, Ken-ichi Kadota). It will brighten up to 10.5 mag from 2020 December to 2021 January. In the Northern Hemisphere, it stays observable in good condition while the comet will be brightening gradually, but it is not observable at the high light. In the Southern Hemisphere, it is not observable for a long time, but it will be observable in good condition after the high light.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  17  4.33   62 56.7   4.603   4.612    84   16.5  18:19 (147, 35)  
Nov. 30  17 12.05   62  9.1   4.540   4.549    84   16.4  18:18 (146, 33)  

* C/2010 U3 ( Boattini )

It stays 16-17 mag for a long time until 2020. It is observable in good condition in the Northern Hemisphere. It is hardly observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  13  8.20   51 40.9   8.706   8.594    80   16.9   5:13 (229, 46)  
Nov. 30  13 12.56   51 43.3   8.648   8.602    84   16.9   5:18 (229, 51)  

* C/2015 O1 ( PanSTARRS )

Fading. Now it is 17.3 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato). It stays 17 mag from autumn to winter. 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)  
Nov. 23   9 12.58   23 40.0   6.182   6.532   106   16.9   5:07 (  0, 79)  
Nov. 30   9  9.11   23 39.8   6.108   6.576   114   16.9   4:36 (  0, 79)  

* 261P/Larson

Now it is 17.1 mag (Oct. 31, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this, and it will be fainter than 18 mag in late December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   3 17.72   27  3.3   1.365   2.343   169   16.9  23:09 (  0, 82)  
Nov. 30   3 12.50   26 20.0   1.407   2.369   163   17.2  22:36 (  0, 81)  

* C/2019 K5 ( Young )

Now it is 16.4 mag (Oct. 30, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition while the comet will be fading slowly after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   3 15.14   -1 54.8   1.773   2.706   156   17.1  23:06 (  0, 53)  
Nov. 30   3 12.29   -2  3.1   1.854   2.758   150   17.3  22:36 (  0, 53)  

* C/2018 A3 ( ATLAS )

Now it is 17.7 mag (Oct. 31, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this. In the Northern Hemisphere, it stays observable in good condition for a long time. 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)  
Nov. 23   1 28.13   37 39.9   3.530   4.370   144   17.1  21:19 (180, 87)  
Nov. 30   1 19.27   35 33.8   3.629   4.411   137   17.2  20:43 (180, 89)  

* C/2016 N6 ( PanSTARRS )

Fading now. Now it is 17.1 mag (Oct. 5, M. Masek). In the Southern Hemisphere, it stays observable for a long time until it fades out. In the Northern Hemisphere, it will not be observable after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   5 57.83  -53 40.9   5.165   5.446   101   17.4   1:53 (  0,  1)  
Nov. 30   5 47.02  -54 35.6   5.212   5.498   101   17.4   1:14 (  0,  0)  

* C/2019 L3 ( ATLAS )

Now it is 17.3 mag (Oct. 26, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 12 mag in winter in 2022.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  22  2.41   43  0.1   7.071   7.396   105   17.4  18:19 (152, 81)  
Nov. 30  22  3.82   42 29.0   7.095   7.351   101   17.4  18:18 (132, 78)  

* (3200) Phaethon

Now it is 16.3 mag (Oct. 8. ATLAS-HKO, Haleakala). It passed the perihelion on July 2. Then it must have brightened up to 13 mag, but it was not observable around that time. In the Northern Hemisphere, it stays observable in excellent condition until December when it becomes fainter than 18 mag. In the Southern Hemisphere, it stays locating low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   0 20.99   32 47.9   1.273   2.066   131   17.4  20:13 (  0, 88)  
Nov. 30   0 17.59   30  5.4   1.379   2.106   125   17.7  19:42 (  0, 85)  

* 384P/2019 O1 ( Kowalski )

First return of a new periodic comet which brightened up to 18 mag in 2014. Now it is 17.2 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in December. It is observable in good condition in the Northern Hemisphere. It locates extremely low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   8 11.10   43 57.6   0.390   1.238   121   17.5   4:06 (180, 81)  
Nov. 30   8 11.35   44  0.3   0.407   1.277   127   17.6   3:39 (180, 81)  

* 173P/Mueller 5

Now it is 17.4 mag (Oct. 31, Ken-ichi Kadota). 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. 23   3  6.88    0 34.8   4.234   5.160   157   17.5  22:58 (  0, 56)  
Nov. 30   3  3.36    0 35.4   4.257   5.147   151   17.5  22:27 (  0, 56)  

* 76P/West-Kohoutek-Ikemura

Now it is 17.8 mag (Nov. 2, Toshihiko Ikemura, Hirohisa Sato). It was exptected to brighten up to 16.5 mag from October to December. But actually, it is fainter than originally expected. It seems to brighten up to 18 mag at best. 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)  
Nov. 23   9 25.86   28 35.8   1.065   1.628   104   17.8   5:13 (346, 83)  
Nov. 30   9 41.62   31 26.1   1.027   1.642   109   17.8   5:08 (  0, 86)  

* 203P/Korlevic

Now it is 17.9 mag (Oct. 29, Toshihiko Ikemura, Hirohisa Sato). It is observable at 18 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)  
Nov. 23   4 19.73   24 30.8   2.266   3.247   172   17.8   0:15 (  0, 80)  
Nov. 30   4 14.77   24 15.0   2.256   3.241   176   17.8  23:38 (  0, 79)  

* 387P/2019 R1 ( Boattini )

It brightened up to 16 mag in September. Now it is fading. Now it is 17.1 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23  10 33.28    1 48.9   1.434   1.608    80   17.9   5:13 (328, 52)  
Nov. 30  10 42.47    0  2.4   1.421   1.660    85   18.1   5:18 (339, 53)  

* 200P/Larsen

Now it is very faint as 19.7 mag (Oct. 25, Toshihiko Ikemura, Hirohisa Sato). It brightened up to 15.5 mag in 1997, and 17 mag in 2008, however, it is much fainter in this apparition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 23   1  5.48   13 57.8   2.542   3.358   139   20.3  20:57 (  0, 69)  
Nov. 30   1  5.09   13 23.4   2.618   3.366   132   20.4  20:29 (  0, 68)  

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