Weekly Information about Bright Comets (2019 Nov. 30: North)

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 Updated on December 1, 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 10.0 mag (Nov. 28, Michael Jager). 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. 30   4 58.50   45 56.2   1.660   2.585   154   10.0   0:27 (180, 79)  
Dec.  7   4 41.76   48 32.2   1.598   2.520   153    9.8  23:37 (180, 76)

* 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. 30  23 50.13   39  9.6   2.515   3.130   120   11.5  19:14 (180, 86)  
Dec.  7  23 42.41   39 11.2   2.609   3.135   113   11.6  18:39 (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. 30  21 37.03  -44  7.1   2.021   1.877    67   12.9  18:18 ( 14,  9)  
Dec.  7  21 40.65  -44 44.2   2.195   1.938    61   13.3  18:18 ( 18,  7)

* 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. 30   0 25.16   13 13.3   5.180   5.780   123   13.3  19:50 (  0, 68)  
Dec.  7   0 24.98   13  2.8   5.278   5.781   116   13.3  19:22 (  0, 68)

* 260P/McNaught

Now it is 12.4 mag (Nov. 16, Thomas Lehmann). 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. 30   2 23.56   48 42.8   0.771   1.673   144   13.5  21:48 (180, 76)  
Dec.  7   2 25.21   47 40.5   0.829   1.713   141   13.9  21:22 (180, 77)

* 68P/Klemola

Now it is 13.6 mag (Nov. 15, Thomas Lehmann). It will be fading slowly after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 30  20 47.62  -15  4.0   2.025   1.807    63   14.2  18:18 ( 36, 32)  
Dec.  7  21  6.33  -14 26.3   2.087   1.817    60   14.3  18:18 ( 39, 31)

* 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. 30   2 12.77   38 34.5   0.724   1.644   147   14.6  21:37 (180, 87)  
Dec.  7   2 15.98   35 45.9   0.724   1.626   143   14.5  21:13 (180, 89)

* 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. 30  21 11.90  -71 43.5   3.562   3.255    64   14.6  18:18 (  8,-18)  
Dec.  7  21 26.51  -68 50.4   3.634   3.279    61   14.7  18:18 ( 10,-16)

* 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. 30  10 23.16   13 23.9   1.441   1.809    94   14.8   5:18 (340, 67)  
Dec.  7  10 36.30   12 47.9   1.390   1.818    98   14.7   5:24 (353, 68)

* 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. 30  21  2.17  -13 55.6   1.930   1.787    66   14.7  18:18 ( 33, 35)  
Dec.  7  21 17.81  -11 57.6   1.987   1.788    63   14.8  18:18 ( 37, 35)

* 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. 30   6 33.69  -34 35.6   4.864   5.366   115   14.9   2:01 (  0, 20)  
Dec.  7   6 27.05  -34 26.7   4.880   5.423   118   15.0   1:27 (  0, 21)

* 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. 30   9 37.29    6 29.5   2.344   2.735   102   15.0   5:04 (  0, 61)  
Dec.  7   9 39.27    6  2.3   2.284   2.767   109   15.1   4:39 (  0, 61)

* 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. 30  11 13.90  -11 48.7   2.057   2.016    73   15.1   5:18 (334, 39)  
Dec.  7  11 25.74  -17  7.7   2.004   2.007    75   15.0   5:24 (342, 36)

* 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. 30  16 13.48  -57 56.8   2.919   2.205    36   15.3   5:18 (322,-32)  
Dec.  7  16 29.53  -60 16.4   2.863   2.172    37   15.2   5:24 (325,-30)

* 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. 30  22 52.78  -31 12.0   4.665   4.688    85   15.3  18:18 (  0, 24)  
Dec.  7  22 54.35  -29 46.5   4.798   4.720    79   15.4  18:18 (  6, 25)

* 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. 30  13 58.50  -81 37.8   3.795   3.440    61   15.8   5:18 (351,-31)  
Dec.  7  14 54.72  -84  5.2   3.784   3.440    62   15.8   5:24 (354,-33)

* 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. 30  23 54.15   -7 34.1   1.873   2.375   108   15.9  19:19 (  0, 48)  
Dec.  7  23 59.83   -6 42.5   1.942   2.366   102   15.9  18:57 (  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. 30  14 20.89  -55  5.6   5.080   4.377    40   15.9   5:18 (327,-17)  
Dec.  7  14 24.41  -56 28.7   5.083   4.418    43   16.0   5:24 (330,-15)

* 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. 30  12 33.04   12 31.3   3.930   3.635    65   16.3   5:18 (292, 47)  
Dec.  7  12 39.84   12 10.8   3.820   3.617    70   16.2   5:24 (298, 52)

* C/2017 K2 ( PanSTARRS )

Now it is 16.7 mag (Nov. 14, 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. 30  17 32.17   46 10.6  10.645  10.342    69   16.3  18:18 (127, 31)  
Dec.  7  17 35.88   45 53.4  10.603  10.293    69   16.3  18:18 (129, 27)

* 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. 30  17 12.05   62  9.2   4.540   4.549    84   16.4  18:18 (146, 33)  
Dec.  7  17 19.94   61 29.6   4.477   4.486    84   16.3  18:18 (146, 30)

* C/2018 DO4 ( Lemmon )

Now it is 15.3 mag (Nov. 4, Sandor Szabo). It will be fading after this, and it will be fainter than 18 mag in January. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 30   2  1.05   -3 14.9   1.825   2.639   137   16.5  21:24 (  0, 52)  
Dec.  7   1 42.14   -4 59.3   1.967   2.669   126   16.7  20:38 (  0, 50)

* 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. 30   7 28.39   61 40.6   1.089   1.871   128   16.8   2:57 (180, 63)  
Dec.  7   7 17.02   62 23.9   1.106   1.920   133   17.4   2:18 (180, 63)

* 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. 30  13 12.56   51 43.3   8.648   8.602    84   16.9   5:18 (229, 51)  
Dec.  7  13 16.55   51 49.5   8.589   8.610    87   16.8   5:24 (228, 55)

* 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. 30   9  9.11   23 39.8   6.108   6.576   114   16.9   4:36 (  0, 79)  
Dec.  7   9  5.02   23 41.1   6.041   6.619   122   16.9   4:05 (  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. 30   3 12.50   26 20.0   1.407   2.369   163   17.2  22:36 (  0, 81)  
Dec.  7   3  8.36   25 36.9   1.461   2.395   156   17.4  22:05 (  0, 81)

* 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. 30   1 19.26   35 33.7   3.629   4.411   137   17.2  20:43 (180, 89)  
Dec.  7   1 12.05   33 31.9   3.745   4.452   130   17.4  20:08 (  0, 89)

* 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. 30   3 12.29   -2  3.1   1.854   2.758   150   17.3  22:36 (  0, 53)  
Dec.  7   3 10.15   -2  0.7   1.945   2.810   145   17.5  22:06 (  0, 53)

* 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. 30  22  3.83   42 29.0   7.095   7.351   101   17.4  18:18 (132, 78)  
Dec.  7  22  5.80   42  0.3   7.123   7.306    96   17.4  18:18 (121, 74)

* 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. 30   5 47.02  -54 35.5   5.212   5.498   101   17.4   1:14 (  0,  0)  
Dec.  7   5 35.62  -55 16.5   5.266   5.550   101   17.5   0:36 (  0,  0)

* 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. 30   3  3.36    0 35.4   4.257   5.147   151   17.5  22:27 (  0, 56)  
Dec.  7   3  0.14    0 40.3   4.294   5.133   145   17.5  21:56 (  0, 56)

* 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. 30   8 11.35   44  0.3   0.407   1.277   127   17.6   3:39 (180, 81)  
Dec.  7   8  6.87   43 56.8   0.426   1.320   134   17.8   3:07 (180, 81)

* (3200) Phaethon

Fading now. 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. 30   0 17.59   30  5.4   1.379   2.106   125   17.7  19:42 (  0, 85)  
Dec.  7   0 16.73   27 49.5   1.493   2.143   118   17.9  19:14 (  0, 83)

* 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. 30   4 14.77   24 15.0   2.256   3.241   176   17.8  23:38 (  0, 79)  
Dec.  7   4  9.87   23 57.6   2.260   3.235   170   17.8  23:06 (  0, 79)

* 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. 30   9 41.62   31 26.1   1.027   1.642   109   17.8   5:08 (  0, 86)  
Dec.  7   9 56.56   34 30.2   0.997   1.658   113   17.8   4:56 (  0, 89)

* A/2019 C1

Asteroid moving along a comet-like orbit. It stays observable at 17.5 mag from 2020 to 2021. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 30  10 51.98  -22 41.2   6.847   6.664    75   17.9   5:18 (344, 30)  
Dec.  7  10 54.44  -23 11.1   6.743   6.657    80   17.8   5:24 (352, 31)

* 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, and it will brighten up to 15.5 mag. It will be obesrvable in excellent condition in the Northern Hemisphere. 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. 30  22 29.62  -16 25.6   0.280   1.006    85   18.5  18:18 (  7, 39)  
Dec.  7  22 36.42  -12 43.8   0.245   0.980    81   18.3  18:18 ( 14, 41)

* 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. 30   1  5.09   13 23.4   2.618   3.366   132   20.4  20:29 (  0, 68)  
Dec.  7   1  5.61   12 55.0   2.704   3.373   125   20.4  20:02 (  0, 68)

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