Weekly Information about Bright Comets (2018 Oct. 27: North)

Japanese version
Home page
Updated on October 28, 2018
Last week South Next week

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.

---------------------------------------------------------------------

* 46P/Wirtanen

Now it is bright as 9.2 mag (Oct. 20, Juan Jose Gonzalez). It will approach to Earth down to 0.08 a.u. in December, and it is expected to brighten up to 3 mag. In the Northern Hemisphere, it locates low until November, but it stays observable in excellent condition after December. In the Southern Hemisphere, it is observable in good condition until mid December when it brightens up to 3 mag. But it becomes unobservable after that.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   1 59.15  -32 32.3   0.303   1.226   134    8.6  23:36 (  0, 22)  
Nov.  3   2  0.30  -33  4.8   0.263   1.183   131    7.8  23:10 (  0, 22)  

* 21P/Giacobini-Zinner

It brightened up to 6.8 mag in September (Sept. 17, Seiichi Yoshida). Now it is fading. It has already faded down to 10.1 mag (Oct. 20, Juan Jose Gonzalez). It is observable in excellent condition in the Southern Hemisphere. It will be getting lower gradually in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   7 23.72  -25  0.5   0.626   1.208    93    9.0   4:51 (357, 30)  
Nov.  3   7 25.68  -29 14.2   0.674   1.261    96    9.5   4:38 (  0, 26)  

* 38P/Stephan-Oterma

Now it is bright as 10.0 mag (Oct. 22, Marco Goiato). It stays 9-10 mag until January. In the Northern Hemisphere, it stays observable in good condition for a long time until it fades out. In the Southern Hemispehre, it is observable in good condition until autumn, but it will be low in winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   6 58.83   17 19.9   0.970   1.600   109    9.5   4:38 (  0, 72)  
Nov.  3   7 14.89   19  9.9   0.921   1.592   112    9.4   4:27 (  0, 74)  

* C/2016 M1 ( PanSTARRS )

It brightened up to 7.7 mag in June (June 19, Juan Jose Gonzalez). Now it is fading. But it is still bright as 11.1 mag (Oct. 19, Chris Wyatt). In the Southern Hemisphere, it stays observable in good condition for a long time until the comet will fade out. In the Northern Hemisphere, it is not observable for a long time until autumn in 2019 when the comet fades out down to 16 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  14 45.44  -67  3.1   2.813   2.384    54   10.4  18:36 ( 27,-33)  
Nov.  3  14 53.15  -68 47.0   2.861   2.415    54   10.5  18:30 ( 26,-35)  

* 64P/Swift-Gehrels

Now it is very bright as 10.3 mag (Oct. 22, Marco Goiato). It is observable in excellent condition in the Northern Hemisphere. It stays low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   0 42.39   36 35.8   0.445   1.396   149   10.6  22:20 (180, 88)  
Nov.  3   0 50.28   36 54.2   0.447   1.393   148   10.6  22:01 (180, 88)  

* C/2018 L2 ( ATLAS )

Now it is very bright as 10.8 mag (Oct. 12, Paul Camilleri). It stays at 10-11 mag until winter. In the Northern Hemisphere, it stays observable for a long time until it fades out. But it stays extremely low. It will never be observable again in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  16 10.13    0 48.6   2.512   1.777    34   11.2  18:36 ( 80, 15)  
Nov.  3  16 24.52    2 15.9   2.504   1.755    32   11.1  18:30 ( 82, 15)  

* C/2016 N6 ( PanSTARRS )

Now it is 12.2 mag (Oct. 6, Paul Camilleri). It stays 12 mag for a long time until spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   8 57.04    3 56.1   2.906   2.870    78   12.2   4:51 (316, 50)  
Nov.  3   8 53.41    1 36.6   2.808   2.897    85   12.2   4:56 (330, 53)  

* C/2016 R2 ( PanSTARRS )

Now it is 11.0 mag (Oct. 20, Juan Jose Gonzalez). It will be fading slowly after this. In the Northern Hemisphere, it stays low until October. But it will be observable in good condition after that. In the Southern Hemisphere, it is not observable until summer in 2019.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  13 26.39   44  3.9   3.577   3.154    57   12.3   4:51 (230, 21)  
Nov.  3  13 41.79   43 18.4   3.585   3.194    59   12.3   4:56 (233, 24)  

* 26P/Grigg-Skjellerup

It must have brightened up to 13 mag in October. But it is not observable at all.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  15  4.91  -11 12.4   2.063   1.132    14   13.1  18:36 ( 80, -5)  
Nov.  3  15 33.73  -11 42.3   2.087   1.162    15   13.5  18:30 ( 78, -4)  

* 29P/Schwassmann-Wachmann 1

Now it is bright as 11.6 mag (Oct. 13, Maik Meyer).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  22 45.53   -0 48.5   5.093   5.770   128   13.2  20:23 (  0, 54)  
Nov.  3  22 44.81   -0 55.7   5.185   5.770   121   13.3  19:55 (  0, 54)  

* 78P/Gehrels 2

Now it is 13.5 mag (Oct. 11, Paul Camilleri). It stays at 12-13 mag for a long time until autumn in 2019.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  21 27.04   -9  1.7   1.872   2.373   107   13.6  19:05 (  0, 46)  
Nov.  3  21 32.12   -9  3.8   1.928   2.346   102   13.5  18:43 (  0, 46)  

* C/2018 N2 ( ASASSN )

Now it is 13.7 mag (Oct. 11, Paul Camilleri). It will brighten up to 10-11 mag in autumn in 2019. It stays observable in good condition for a while in the Southern Hemisphere. In the Northern Hemisphere, it stays extremely low for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   2  6.57  -46 46.2   4.138   4.722   120   13.8  23:42 (  0,  8)  
Nov.  3   1 56.46  -46 11.8   4.123   4.677   118   13.8  23:05 (  0,  9)  

* 48P/Johnson

Now it is bright as 12.8 mag (Oct. 12, Paul Camilleri). It will be fading after this. It stays observable in excellent condition for a while 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. 27  22 39.84  -26 10.0   1.443   2.091   117   14.0  20:18 (  0, 29)  
Nov.  3  22 45.73  -25  5.4   1.524   2.107   112   14.2  19:56 (  0, 30)  

* C/2017 T3 ( ATLAS )

It brightened up to 8.7 mag in July (July 18, Marco Goiato). Then it faded down to 12.3 mag in August (Aug. 29, Chris Wyatt). Now it is not observable. It will appear in the morning sky in late December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  14 31.40  -26  0.9   2.829   1.886    14   14.0  18:36 ( 71,-20)  
Nov.  3  14 44.45  -25 25.5   2.943   1.978    10   14.3  18:30 ( 73,-21)  

* C/2017 S3 ( PanSTARRS )

It brightened rapidly in outburst up to 6.9 mag (July 19, Maik Meyer). Then it faded down to 9.3 mag (Aug. 2, Katsumi Yoshimoto). It approached to Sun down to 0.2 a.u. in August, and it was expected to brighten up to 3 mag. However, it must have been already disintegrated. In the Northern Hemisphere, it is appearing in the morning sky. But it will be too faint to observe.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  12 55.81   20  2.6   2.411   1.720    36   14.3   4:51 (255, 14)  
Nov.  3  13  6.08   21 22.0   2.456   1.840    41   14.6   4:56 (257, 20)  

* C/2017 M4 ( ATLAS )

Now it is 14.0 mag (Oct. 7, Seiichi Yoshida). It stays 13-14 mag until summer in 2019. It is not observable now in the Southern Hemisphere. It will be unobservable in November also in the Northeren Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  16 29.35    3 15.7   4.055   3.347    39   14.3  18:36 ( 79, 20)  
Nov.  3  16 32.95    1 29.9   4.105   3.332    34   14.3  18:30 ( 80, 16)  

* (944) Hidalgo

Now it is 14.1 mag (Oct. 7, Seiichi Yoshida). It stays at 14 mag until winter. It is observable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it is not observable until summer in 2019.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   8  8.71   69 21.4   1.490   1.947   101   14.4   4:51 (189, 55)  
Nov.  3   8 47.04   71 35.5   1.471   1.949   102   14.4   4:56 (188, 53)  

* C/2015 O1 ( PanSTARRS )

Now it is 14.3 mag (Aug. 17, Ken-ichi Kadota). It will be observable at 13-14 mag for a long time from 2017 to 2018. In the Southern Hemisphere, it will be hardly observable after this. In the Northern Hemispehre, it became low temporarily in September, but it will become high after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  12  0.52   34 35.7   4.812   4.328    55   14.4   4:51 (248, 32)  
Nov.  3  12  1.10   34 39.0   4.752   4.359    61   14.4   4:56 (251, 38)  

* 300P/Catalina

Now it is 15.4 mag (Oct. 7, iTelescope Observatory, Siding Spring). It locates low. But it brightens up to 14.5 mag from October to November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  16 55.63  -24 41.3   1.244   0.838    42   14.7  18:36 ( 53,  7)  
Nov.  3  17 33.87  -26  5.9   1.183   0.833    43   14.5  18:30 ( 49,  9)  

* C/2018 N1 ( NEOWISE )

It approached to Earth down to 0.3 a.u., and brightened up to 8.3 mag in July (July 22, Juan Jose Gonzalez). Now it is fading. But it is still bright as 13.2 mag (Sept. 24, Thomas Lehmann). Now it is not observable. It will appear in the morning sky again in December in the Northern Hemisphere, or in January in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  15 13.83   -6  7.9   2.725   1.809    18   14.8  18:36 ( 83,  0)  
Nov.  3  15 16.07   -5 51.5   2.822   1.876    14   15.0  18:30 ( 86, -4)  

* C/2017 B3 ( LINEAR )

Now it is 14.5 mag (Aug. 16, P. Camilleri, H. Williams). It stays 15 mag from 2018 to 2019, and it will be observable for a long time in the Southern Hemisphere. 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. 27  15 43.03  -68 14.0   4.452   4.013    57   15.0  18:36 ( 24,-28)  
Nov.  3  16  7.89  -68 29.5   4.474   4.001    55   15.0  18:30 ( 24,-28)  

* 60P/Tsuchinshan 2

Now it is 15.6 mag (Oct. 13, D. Buczynski). Brightening very rapidly. It will brighten up to 14 mag from January to February, and it is expected to be observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   9  3.21   16  4.6   1.547   1.683    79   15.4   4:51 (300, 59)  
Nov.  3   9 20.72   14 27.8   1.480   1.666    82   15.2   4:56 (308, 60)  

* 123P/West-Hartley

Now it is 16.5 mag (Oct. 4, I. Dulevich, S. Plaksa). It will brighten up to 13-14 mag in winter, and it will be observable in excellent condition. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   9 39.46   28 40.5   2.293   2.268    76   15.7   4:51 (271, 58)  
Nov.  3   9 53.30   28 20.4   2.202   2.250    79   15.6   4:56 (275, 62)  

* C/2018 A3 ( ATLAS )

Now it is 15.8 mag (Oct. 13, S. Shurpakov). It will brighten up to 15 mag in winter. It is observable in excellent condition in the Northern Hemisphere. It is not observable at all in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  11 14.25   42 26.4   3.612   3.358    67   16.1   4:51 (242, 43)  
Nov.  3  11 16.70   44  8.8   3.483   3.345    73   16.0   4:56 (241, 49)  

* C/2017 T2 ( PanSTARRS )

Now it is 16.0 mag (Oct. 11, C. Bell). It is expected to brighten up to 7-8 mag in 2020. In 2018, it will be observable at 15-16 mag in good condition from autum to winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   3 47.45   -5 50.2   5.353   6.221   148   16.1   1:28 (  0, 49)  
Nov.  3   3 43.34   -5 57.7   5.265   6.162   152   16.0   0:56 (  0, 49)  

* C/2015 V2 ( Johnson )

It brightened up to 7 mag from May to June in 2017. Now it is fading. It has already faded down to 16.0 mag (Sept. 30, J. Drummond). In the Southern Hemisphere, it stays observable for a long time after this. 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. 27   1 12.15  -54 11.4   5.305   5.756   112   16.5  22:48 (  0,  1)  
Nov.  3   1  6.63  -53 40.7   5.416   5.816   109   16.6  22:16 (  0,  1)  

* C/2016 A1 ( PanSTARRS )

It brightened up to 14.7 mag in early 2018 (Jan. 25, Catalina Sky Survey). Now it is fading slowly. Now it is 16.1 mag (Oct. 10, I. Dulevich, S. Plaksa). In the Northern Hemisphere, it stays observable in good condition for a long time until the comet fades out. It is never observable again in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   8 23.71   60 38.3   5.653   5.884    98   16.5   4:51 (199, 62)  
Nov.  3   8 21.12   62  8.2   5.581   5.905   104   16.5   4:56 (190, 62)  

* 65P/Gunn

Now it is 16.4 mag (Sept. 29, Catalina Sky Survey). 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)  
Oct. 27  22 46.88  -19 21.3   2.777   3.408   121   16.6  20:24 (  0, 36)  
Nov.  3  22 47.13  -18 53.2   2.880   3.423   115   16.7  19:57 (  0, 36)  

* (3552) Don Quixote

Now it is 16.2 mag (Sept. 13, ATLAS-MLO, Mauna Loa). It stays 16 mag for a while. In the Northern Hemisphere, it stays observable in good condition after this until it fades out. It is not observable in the Southern Hemisphere. Its cometary activity was observed on Mar. 26 (M. Mommert, D. Polishook, N. Moskovitz).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   1 39.29   54 32.6   1.518   2.351   137   16.6  23:15 (180, 70)  
Nov.  3   1 25.64   54  3.0   1.572   2.409   138   16.8  22:34 (180, 71)  

* 59P/Kearns-Kwee

Now it is 17.0 mag (Oct. 12, C. Bell). It is observable at 16.5 mag in good condition from autumn to winter. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   8 10.17   26 56.0   2.087   2.379    94   16.7   4:51 (298, 75)  
Nov.  3   8 18.01   26 27.5   2.013   2.387    99   16.7   4:56 (317, 79)  

* C/2010 U3 ( Boattini )

Now it is 17.0 mag (Oct. 12, D. Buczynski). It stays 16-17 mag for a long time until 2020. It is observable in good condition in the Northern Hemisphere. It is not observable at all in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  11  5.83   67 47.4   8.479   8.477    86   16.8   4:51 (207, 44)  
Nov.  3  11 14.13   68  0.9   8.412   8.473    90   16.8   4:56 (205, 46)  

* A/2017 U7

Asteroid, but it brightened rapidly. Now it is 16.4 mag (Oct. 9, P. Camilleri, J. Oey).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  22 33.15  -45 42.8   6.447   6.770   104   17.0  20:10 (  0,  9)  
Nov.  3  22 27.19  -45 18.9   6.539   6.756    98   17.0  19:37 (  0, 10)  

* 368P/2018 L3 ( NEAT )

First return of a new periodic comet which brightened up to 16.5 mag in 2005. Now it is 16.3 mag (Oct. 15, S. Shurpakov). It will be observable at 17 mag in good condition in autumn. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   1 52.39   32 38.0   1.146   2.107   159   17.0  23:29 (  0, 88)  
Nov.  3   1 50.29   31 12.6   1.157   2.120   161   17.1  23:00 (  0, 86)  

* P/2018 P3 ( PanSTARRS )

It brightened very rapidly. Now it is 16.7 mag (Oct. 12, Purple Mountain Observatory, XuYi Station). It seems to stay bright for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  23 52.81  -14 26.2   0.896   1.763   137   17.0  21:30 (  0, 41)  
Nov.  3  23 54.06  -12 50.2   0.942   1.768   132   17.2  21:04 (  0, 42)  

* 37P/Forbes

It brightened up to 12 mag from spring to summer. Now it is fading. It has already faded down to 17.1 mag (Oct. 8, Toshihiko Ikemura, Hirohisa Sato).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  22 55.79    4 47.7   1.490   2.285   132   17.0  20:33 (  0, 60)  
Nov.  3  22 57.91    4 45.4   1.594   2.326   126   17.4  20:08 (  0, 60)  

* 164P/Christensen

Now it is 17.5 mag (Oct. 10, D. Buczynski). It is observable at 17 mag in good condition in winter. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  10 10.42   20 20.7   2.379   2.177    66   17.1   4:51 (278, 48)  
Nov.  3  10 21.96   20  9.1   2.338   2.215    70   17.1   4:56 (283, 52)  

* C/2015 V1 ( PanSTARRS )

Now it is 17.0 mag (Oct. 12, ATLAS-MLO, Mauna Loa). Fading now. It stays observable in good condition for a long time after this in the Southern Hemisphere. It stays low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  22 57.89  -39 30.7   4.520   4.982   112   17.2  20:35 (  0, 16)  
Nov.  3  22 51.29  -39 45.4   4.660   5.012   105   17.3  20:01 (  0, 15)  

* C/2014 B1 ( Schwartz )

Now it is 17.4 mag (June 6, Slooh.com Canary Islands Observatory). Fading slowly. It stays observable at 17 mag in good condition until summer in 2019.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  11 25.63    6  4.5  10.522   9.826    43   17.3   4:51 (281, 25)  
Nov.  3  11 28.47    5 56.6  10.445   9.835    49   17.3   4:56 (286, 31)  

* 369P/2018 P1 ( Hill )

First return of a new periodic comet which brightened up to 17.5 mag in 2010. Now it is 18.1 mag (Oct. 13, J.-F. Soulier). It was expected to brighten up to 16.5 mag from November to December. But actually, it is a bit fainter than expected. 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)  
Oct. 27   6  4.95   28 35.9   1.243   1.960   122   17.4   3:45 (  0, 84)  
Nov.  3   6 10.06   29 40.7   1.194   1.965   127   17.3   3:23 (  0, 85)  

* C/2015 XY1 ( Lemmon )

Now it is 18.1 mag (Oct. 13, W. Hasubick). It was observed at 17 mag in last winter. It will be observable in good condition at 17.5 mag also in this winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   5 33.43    8 11.0   7.348   8.004   128   17.4   3:14 (  0, 63)  
Nov.  3   5 29.14    7 43.2   7.268   8.010   135   17.4   2:42 (  0, 63)  

* C/2014 OE4 ( PanSTARRS )

Now it is 17.0 mag (Oct. 4, A. Diepvens). It will be fading gradually after this, and it will be fainter than 18 mag in winter. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it will never be observable again.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  22 36.87   74  3.7   7.339   7.767   112   17.4  20:14 (180, 51)  
Nov.  3  22 36.97   73 11.5   7.352   7.794   113   17.4  19:46 (180, 52)  

* 137P/Shoemaker-Levy 2

Now it is 16.6 mag (Oct. 7, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this. It will be fainter than 18 mag in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  21 40.23   -7 34.0   1.388   1.980   111   17.4  19:18 (  0, 48)  
Nov.  3  21 48.42   -7 19.3   1.440   1.967   106   17.5  18:59 (  0, 48)  

* 240P/NEAT

It brightened very rapidly up to 13.8 mag in August in 2017 (Aug. 22, Kunihiro Shima). Now it is 16.9 mag (Oct. 11, D. Buczynski). In the Northern Hemisphere, it stays observable in excellent condition after this. It will be observable also in the Southern Hemisphere in December, but it stays low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27  10  9.77   28 48.1   2.631   2.476    70   17.5   4:51 (267, 52)  
Nov.  3  10 21.35   28 55.2   2.575   2.501    74   17.5   4:56 (269, 56)  

* 171P/Spahr

Now it is 17.9 mag (Oct. 10, Catalina Sky Survey). It will brighten rapidly. It was expected to be observable at 15.5 mag in good condition in winter. But actually, it is fainter than expected.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   5  1.05   -7 46.4   1.100   1.910   131   17.7   2:41 (  0, 47)  
Nov.  3   5  1.12   -7 42.0   1.040   1.888   136   17.5   2:14 (  0, 47)  

* 361P/2017 S4 ( Spacewatch )

Now it is 17.5 mag (Oct. 6, K. Hills). It was observed at 18 mag in last winter. It will be observable in good condition at 17.5 mag also in this winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   7 21.69    7  9.1   2.517   2.890   101   17.6   4:51 (354, 62)  
Nov.  3   7 25.00    6 19.6   2.445   2.903   107   17.6   4:37 (  0, 61)  

* (3200) Phaethon

Now it is 18.1 mag (Oct. 15, Kunihiro Shima). Although it is around the aphelion, it is observable at 17.5 mag in November, in good condition in the Northern Hemisphere. It locates very low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   3 41.27   41  8.4   1.520   2.399   144   17.9   1:23 (180, 84)  
Nov.  3   3 23.89   40 36.3   1.473   2.394   151   17.7   0:38 (180, 84)  

* C/2017 K4 ( ATLAS )

Now it is 17.7 mag (Oct. 1, Ken-ichi Kadota). It was observed at 16 mag from summer to autumn in 2017. It will be observable at 17 mag in good condition also in 2018. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   0 39.43   28 21.1   2.941   3.863   154   17.8  22:16 (  0, 83)  
Nov.  3   0 36.56   27 45.3   3.015   3.909   150   17.9  21:46 (  0, 83)  

* C/2011 KP36 ( Spacewatch )

Now it is 17.9 mag (Oct. 6, D. Buczynski). It will be fainter than 18 mag in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   5 11.74    2 20.6   7.075   7.781   132   17.8   2:52 (  0, 57)  
Nov.  3   5 10.20    2  5.1   7.041   7.815   138   17.8   2:23 (  0, 57)  

* 159P/LONEOS

Now it is 17.9 mag (Oct. 8, W. Hasubick). It is observable at 17.5 mag until January, in good condition in the Northern Hemisphere. It locates very low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   6 37.83   36 51.3   3.202   3.729   114   17.9   4:18 (180, 88)  
Nov.  3   6 38.54   37 41.4   3.126   3.738   121   17.8   3:51 (180, 87)  

* (37117) Narcissus

Peculiar asteroid moving along a cometary orbit. Now it is 17.2 mag (Sept. 9, M. Jaeger, et al.). It is observable at 17.5 mag in good condition in November. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   3 44.01   25 46.0   2.206   3.125   153   18.1   1:25 (  0, 81)  
Nov.  3   3 40.99   25 11.3   2.162   3.116   160   17.9   0:54 (  0, 80)  

* 371P/2018 R1 ( LINEAR-Skiff )

Return of a new periodic comet which brightened up to 17 mag in 2001. Now it is 19.2 mag (Oct. 12, K. Hills). It was predicted to brighten up to 17.5 mag from September to November. But actually, it is fainter than predicted by 2 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 27   1 41.15  -12  2.7   1.258   2.198   154   19.3  23:18 (  0, 43)  
Nov.  3   1 35.81  -11  2.2   1.285   2.204   150   19.4  22:45 (  0, 44)  

---------------------------------------------------------------------

Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.