Weekly Information about Bright Comets (2019 Sept. 21: North)

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Updated on September 21, 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/2018 W2 ( Africano )

Now it is bright as 8.3 mag (Sept. 20, Maik Meyer). It stays bright as 8-9 mag until October. It moves southwards very rapidly after this. In the Southern Hemisphere, it becomes observable in excellent condition after this. In the Northern Hemisphere, it will be getting lower after this, and it will be unobservable in November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   0 50.01   32 47.1   0.537   1.471   143    8.7   0:57 (  0, 89)  
Sept.28  23 51.11   12 39.8   0.495   1.489   167    8.6  23:19 (  0, 66)  

* C/2018 N2 ( ASASSN )

Now it is 11.6 mag (Sept. 11, Maik Meyer). 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 getting lower gradually, and it will be unobservable in early December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   2 11.09   29 22.3   2.375   3.164   134   11.4   2:15 (  0, 84)  
Sept.28   1 59.31   31 22.2   2.306   3.154   141   11.3   1:36 (  0, 86)  

* 260P/McNaught

Now it is 11.6 mag (Sept. 9, Seiichi Yoshida). It stays 12 mag until November. It is observable in excellent condition in the Northern Hemisphere. It will be extremely low after October in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   2 43.91   33 28.4   0.572   1.422   126   11.6   2:47 (  0, 88)  
Sept.28   2 48.90   37 27.7   0.564   1.431   129   11.5   2:25 (180, 88)  

* C/2017 T2 ( PanSTARRS )

Now it is 12.2 mag (Sept. 11, Maik Meyer). 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 getting lower gradually, and it will be unobservable in early December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   5 32.49   25 41.5   3.026   3.249    93   12.3   4:22 (295, 72)  
Sept.28   5 35.75   26 56.4   2.855   3.182    99   12.1   4:27 (308, 78)  

* 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. In the Southern Hemisphere, it will be unobservable soon.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   5 56.91   45 40.6   1.094   1.462    88   12.2   4:22 (233, 69)  
Sept.28   6 17.56   47 48.9   1.089   1.493    90   12.5   4:27 (225, 70)  

* 29P/Schwassmann-Wachmann 1

Now it is 13.3 mag (Sept. 6, Ken-ichi Kadota).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   0 49.43   16  3.1   4.833   5.774   157   13.1   0:53 (  0, 71)  
Sept.28   0 46.31   15 50.7   4.805   5.775   164   13.1   0:22 (  0, 71)  

* C/2019 A9 ( PanSTARRS )

It brightened rapidly. Now it is very bright as 11.5 mag (Sept. 3, Chris Wyatt). It may fade out rapidly after this. In the Southern Hemisphere, it stays observable in the low sky until it becomes fainter than 18 mag in winter. It is not observable at all in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  10 39.69  -52 41.3   1.968   1.630    55   13.4   4:22 (316,-30)  
Sept.28  11 20.62  -56 27.7   2.021   1.678    55   13.8   4:27 (320,-32)  

* 68P/Klemola

Now it is 13.3 mag (Sept. 16, Chris Wyatt). It is observable at 13.5 mag in good condition in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  18  2.23  -12 40.8   1.516   1.862    93   13.8  19:23 ( 25, 39)  
Sept.28  18 15.04  -13 32.5   1.559   1.845    89   13.8  19:13 ( 26, 37)  

* C/2018 A6 ( Gibbs )

Now it is 13.9 mag (Sept. 5, Chris Wyatt). It stays 13-14 mag for a long time in 2019. In the Southern Hemisphere, it is observable in good condition. 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)  
Sept.21   9 45.54  -75 34.1   3.114   3.079    78   14.0   4:22 (343,-32)  
Sept.28  10  9.76  -78 27.4   3.131   3.091    78   14.0   4:27 (347,-32)  

* 78P/Gehrels 2

Now it is 14.7 mag (Sept. 6, Ken-ichi Kadota). It is observable at 14 mag in good condition in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   8 24.44   14  6.4   2.903   2.428    52   14.0   4:22 (275, 31)  
Sept.28   8 35.23   13 15.8   2.860   2.457    56   14.1   4:27 (279, 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 14.3 mag (Aug. 24, Thomas Lehmann). In the Southern Hemisphere, it stays observable for a long time until the comet will fade out. In the Northern Hemisphere, it is appearing in the morning sky, but it stays low for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   7  4.07  -30 46.6   4.963   4.799    74   14.5   4:22 (324, 14)  
Sept.28   7  4.55  -31 18.2   4.952   4.856    78   14.5   4:27 (331, 17)  

* C/2017 B3 ( LINEAR )

Now it is 14.0 mag (Sept. 5, 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)  
Sept.21  23 24.35  -44  1.2   3.610   4.394   136   14.5  23:24 (  0, 11)  
Sept.28  23 17.01  -43  7.0   3.674   4.421   133   14.6  22:49 (  0, 12)  

* 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)  
Sept.21  13 41.94  -44 56.0   4.522   3.985    52   15.3  19:23 ( 49,-21)  
Sept.28  13 45.11  -45 37.7   4.622   4.022    48   15.4  19:13 ( 49,-23)  

* 101P/Chernykh

Now it is 15.5-16.0 mag (Sept. 8, Koremasa Hirofumi). It stays 15.5 mag until December, and it is observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  23 56.67   -8 16.3   1.540   2.539   172   15.8   0:01 (  0, 47)  
Sept.28  23 53.01   -8 49.2   1.528   2.517   168   15.7  23:25 (  0, 46)  

* C/2019 K5 ( Young )

Now it is 15.8 mag (Aug. 26, 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)  
Sept.21   3 31.20    6  0.4   1.576   2.299   124   15.9   3:34 (  0, 61)  
Sept.28   3 33.44    4 53.5   1.558   2.337   130   15.9   3:09 (  0, 60)  

* 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)  
Sept.21  11 36.70  -60  9.0   3.879   3.508    61   15.9   4:22 (323,-39)  
Sept.28  11 44.17  -61 42.2   3.882   3.496    60   15.9   4:27 (325,-36)  

* 261P/Larson

Now it is 15.9 mag (Sept. 6, Ken-ichi Kadota). It is observable at 16 mag in good condition from summer to autumn. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   3 44.71   28 29.1   1.494   2.143   116   15.9   3:48 (  0, 84)  
Sept.28   3 47.39   28 52.2   1.447   2.162   122   15.9   3:23 (  0, 84)  

* 2018 DO4

Now it is 16.0 mag (Sept. 8, Roberto Haver). It looks cometary. It is observable at 15.5 mag in good condition from October to November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   5 51.01   20 27.8   2.223   2.432    89   16.1   4:22 (299, 65)  
Sept.28   5 39.09   19 11.6   2.074   2.444    99   16.0   4:27 (323, 71)  

* C/2019 K1 ( ATLAS )

Now it is 16.5 mag (July 27, Kevin Hills). It will brighten up to 14 mag in winter. It stays observable for a long time in the Southern Hemisphere, although it becomes low in November. In the Northern Hemisphere, it is not observable for a long time until August in 2020.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  14 55.77  -41 35.4   3.003   2.642    59   16.1  19:23 ( 44, -8)  
Sept.28  14 58.80  -42 43.7   3.036   2.591    54   16.0  19:13 ( 45,-11)  

* A/2017 U7

It looks cometary on the LCO (CTIO) image on Aug. 21. Now it is 15.7 mag (Aug. 28, Taras Prystavski). It is observable in excellent condition in the Southern Hemisphere. In the Northern Hemisphere, it locates extremely low for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  20  8.77  -41 45.0   5.917   6.418   115   16.1  20:09 (  0, 13)  
Sept.28  20  2.85  -41 13.9   6.028   6.418   108   16.1  19:36 (  0, 14)  

* C/2019 K7 ( Smith )

Now it is 16.0 mag (Sept. 1, Toshihiko Ikemura, Hirohisa Sato). It stays 15-16 mag for a long time until 2021.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  20 20.61  -30 34.5   4.368   4.976   122   16.2  20:21 (  0, 25)  
Sept.28  20 14.97  -29 40.1   4.450   4.952   114   16.2  19:48 (  0, 25)  

* P/2008 Y12 = P/2014 K3 ( SOHO )

It was observed in the SOHO spacecraft images in 2008 and 2014. It will approach to Sun down to 0.067 a.u. on Oct. 9. It is observable in the evening low sky until late September. But it must be extremely faint.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  14 34.45  -15 37.5   0.757   0.695    43   17.8  19:23 ( 67,  5)  
Sept.28  14  7.00  -11 13.1   0.775   0.499    29   16.4  19:13 ( 77, -1)  

* P/2019 R1 ( Boattini )

First return of a new periodic comet which brightened up to 16.5 mag in 2009. Now it is 16.2 mag (Sept. 11, Ken-ichi Kadota). It stays 16.5 mag until October. 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)  
Sept.21   8  0.74   21  4.6   1.457   1.283    59   16.4   4:22 (271, 40)  
Sept.28   8 24.18   18 59.3   1.456   1.299    60   16.5   4:27 (275, 41)  

* C/2017 K2 ( PanSTARRS )

Now it is 16.3 mag (Sept. 1, 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 highlight 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 highlight.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  17  7.43   51 47.5  10.903  10.819    82   16.5  19:23 (135, 61)  
Sept.28  17  8.36   51  5.0  10.885  10.771    80   16.5  19:13 (132, 58)  

* C/2019 K4 ( Ye )

Now it is 16.6 mag (Sept. 2, Toshihiko Ikemura, Hirohisa Sato). It is observable at 16.5 mag in good condition from August to September. It will be fainter than 18 mag in November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   0  4.07    6 17.3   1.512   2.511   171   16.6   0:08 (  0, 62)  
Sept.28  23 49.76    0 42.5   1.547   2.545   173   16.7  23:21 (  0, 55)  

* (3200) Phaethon

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)  
Sept.21   3 54.32   53 33.6   0.940   1.553   105   16.7   3:59 (180, 71)  
Sept.28   3 24.98   54  9.2   0.925   1.625   114   16.6   3:02 (180, 71)  

* 160P/LINEAR

Now it is 18.4 mag (Aug. 1, iTelescope Observatory, Siding Spring). It will brighten up to 16 mag in autumn. 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)  
Sept.21  18 48.55  -31  1.5   1.414   1.908   102   16.7  19:23 (  8, 24)  
Sept.28  18 58.34  -29 26.8   1.459   1.887    98   16.6  19:13 ( 10, 25)  

* C/2016 N6 ( PanSTARRS )

Fading now. Now it is 15.8 mag (Aug. 24, Thomas Lehmann). 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)  
Sept.21   6 45.65  -39 19.6   5.051   4.977    80   16.8   4:22 (332,  8)  
Sept.28   6 44.72  -41  7.2   5.044   5.029    83   16.8   4:27 (339, 10)  

* C/2018 A3 ( ATLAS )

Now it is 16.8 mag (Aug. 2, Charles Morris). 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)  
Sept.21   3 34.55   49 50.6   3.562   4.023   110   16.8   3:38 (180, 75)  
Sept.28   3 21.23   49 30.1   3.490   4.059   118   16.8   2:58 (180, 75)  

* 114P/Wiseman-Skiff

Now it is 18.7 mag (Sept. 17, Michael Jager). It will brighten very rapidly, and it will brighten 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)  
Sept.21   2 19.22   44  7.6   1.194   1.943   124   17.2   2:23 (180, 81)  
Sept.28   2 22.46   45 17.8   1.115   1.906   128   16.8   1:58 (180, 80)  

* C/2015 O1 ( PanSTARRS )

Fading. 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)  
Sept.21   9 18.32   25 16.8   6.824   6.142    44   16.8   4:22 (256, 26)  
Sept.28   9 19.52   24 57.3   6.776   6.185    50   16.9   4:27 (260, 32)  

* C/2018 Y1 ( Iwamoto )

It approached to Earth down to 0.3 a.u. in mid February, and brightened up to 5.5 mag (Feb. 13, Juan Jose Gonzalez). Now it is fading. It has already faded down to 17.1 mag (Sept. 13, Ken-ichi Kadota).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   3 43.43   43 22.2   2.751   3.260   111   16.9   3:47 (180, 82)  
Sept.28   3 27.17   43 27.2   2.710   3.333   120   17.0   3:04 (180, 81)  

* 155P/Shoemaker 3

Now it is 17.1 mag (Sept. 14, Ken-ichi Kadota). It brightens rapidly, and it will be observable at 15 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)  
Sept.21   7 34.72   20 14.6   2.084   1.899    65   17.3   4:22 (276, 45)  
Sept.28   7 53.07   19 47.9   2.009   1.877    67   17.0   4:27 (279, 48)  

* C/2019 Q4 ( Borisov )

Now it is 17.3 mag (Sept. 11, Ken-ichi Kadota). The orbit is extremely hyperbolic with e=3.4. It seems to be a 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 is not observable for a while. But it will appear in the morning sky in late October, then it will be observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   9  7.77   26 56.1   3.242   2.659    46   17.3   4:22 (256, 29)  
Sept.28   9 20.82   24 20.6   3.091   2.561    49   17.0   4:27 (261, 32)  

* C/2018 L2 ( ATLAS )

It brightened up to 11 mag in late 2018. Now it is 17.1 mag (Sept. 14, Ken-ichi Kadota). It will be fainter than 18 mag in November. It is observable in excellent 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)  
Sept.21   3 55.73   49 22.3   3.425   3.847   107   17.1   3:59 (180, 76)  
Sept.28   3 51.11   49  5.1   3.392   3.911   114   17.2   3:27 (180, 76)  

* P/2019 O1 ( Kowalski )

First return of a new periodic comet which brightened up to 18 mag in 2014. Now it is 17.5 mag (Sept. 13, Ken-ichi Kadota). It stays 17 mag until November. 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)  
Sept.21   4  0.84   29  4.3   0.284   1.146   113   17.3   4:03 (  0, 84)  
Sept.28   4 44.06   34  5.6   0.282   1.129   109   17.2   4:18 (  0, 89)  

* 76P/West-Kohoutek-Ikemura

Now it is 19.2 mag (Sept. 9, Toshihiko Ikemura, Hirohisa Sato). It brightens up to 16.5 mag from October to December. 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)  
Sept.21   6 51.58   12  8.3   1.587   1.642    74   17.4   4:22 (294, 49)  
Sept.28   7  8.91   13 25.5   1.519   1.629    77   17.3   4:27 (297, 52)  

* C/2018 U1 ( Lemmon )

Now it is 17.6 mag (Sept. 7, Ken-ichi Kadota). 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 low in December and January. In the Southern Hemisphere, it locates extremely low now, and it will be unobservable soon.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  18 23.74   43 18.2   7.420   7.579    95   17.5  19:23 (130, 76)  
Sept.28  18 22.38   42  6.3   7.435   7.543    92   17.5  19:13 (121, 73)  

* 65P/Gunn

Now it is fading. In 2019, it is observable at 17.5 mag in good condition in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   2 54.13   11  6.2   3.377   4.126   132   17.7   2:57 (  0, 66)  
Sept.28   2 51.64   10 56.7   3.319   4.140   140   17.6   2:27 (  0, 66)  

* C/2019 L3 ( ATLAS )

Now it is 17.5 mag (Sept. 1, 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)  
Sept.21  22 15.76   47 20.2   7.151   7.802   127   17.7  22:15 (180, 78)  
Sept.28  22 12.30   47  3.1   7.108   7.757   127   17.7  21:44 (180, 78)  

* C/2019 D1 ( Flewelling )

It brightened up to 13.0 mag in May (May 15, Thomas Lehmann). Now it is fading. It has already faded down to 17.6 mag (Sept. 1, Toshihiko Ikemura, Hirohisa Sato). It is observable in excellent 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)  
Sept.21   1  1.78   42 52.9   1.533   2.338   133   17.8   1:06 (180, 82)  
Sept.28   0 56.81   41  6.4   1.550   2.402   139   18.1   0:33 (180, 84)  

* 173P/Mueller 5

It is observable at 17-18 mag for a long time from late 2019 to early 2021.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21   3 31.94    2 28.8   4.647   5.282   124   17.9   3:35 (  0, 58)  
Sept.28   3 30.92    2 12.7   4.554   5.269   131   17.8   3:07 (  0, 57)  

* P/2006 H1 ( McNaught )

First return of a new periodic comet which brightened up to 17 mag in 2006. It has not been recovered yet in this apparition. It will brighten up to 18 mag in autumn. It is observable in good condition in the Southern Hemisphere. It locates extremely low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  17 14.71  -35 56.2   2.418   2.508    83   17.9  19:23 ( 26, 13)  
Sept.28  17 26.57  -35 33.5   2.483   2.494    78   17.9  19:13 ( 27, 13)  

* P/2006 W1 ( Gibbs )

First return of a new periodic comet discovered in 2006. It has not been recovered yet in this apparition. It will brighten up to 16.5 mag in 2020 spring. But it is not observable at that time. It will be observable at 18 mag in 2019 autumn and 2020 autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  18 48.09  -12  4.0   2.212   2.645   104   17.9  19:23 ( 11, 42)  
Sept.28  18 51.60  -12 57.4   2.253   2.595    98   17.9  19:13 ( 16, 41)  

* 2019 LD2

Now it is bright as 17 mag (Aug. 23, Hidetaka Sato). Hidetaka Sato reported it looks cometary with coma. It will be getting lower gradually after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Sept.21  17 56.12  -11 47.4   4.475   4.612    91   19.7  19:23 ( 28, 39)  
Sept.28  17 59.35  -12  5.7   4.577   4.610    85   19.8  19:13 ( 31, 37)  

* 200P/Larsen

Now it is very faint as 20.5 mag (Sept. 12, Francois Kugel). 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)  
Sept.21   1 32.86   20  3.4   2.421   3.311   147   20.1   1:36 (  0, 75)  
Sept.28   1 29.92   19 37.3   2.381   3.314   154   20.1   1:06 (  0, 75)  

* 289P/Blanpain

Now it is 20.15 mag (Aug. 31, Fornari-Ferrin). 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. But it will be 17.5 mag at best. 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)  
Sept.21  23 22.46  -21 10.7   0.573   1.552   158   21.0  23:21 (  0, 34)  
Sept.28  23 11.33  -22 39.7   0.529   1.487   150   20.9  22:43 (  0, 32)  

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