Weekly Information about Bright Comets (2017 Nov. 11: North)

Japanese version
Home page
Updated on November 12, 2017
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.

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

* C/2017 O1 ( ASASSN )

Now it is bright as 9.2 mag (Nov. 2, Maik Meyer). In the Northern Hemisphere, it stays observable in excellent condition for a long time. In the Southern Hemisphere, it will never be observable again after this. It started fading before the peirhelion passage.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   4 50.89   77 11.7   0.804   1.546   118    9.1   1:33 (180, 48)  
Nov. 18   4 34.66   81 29.4   0.851   1.573   117    9.3   0:51 (180, 44)  

* 96P/Machholz 1

It brightened up to 11.6 mag in mid October (Oct. 13, Chris Wyatt). It passed the perihelion on Oct. 27. It will not be observable after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  15 41.92   -7 33.2   1.438   0.528    13   10.2  18:24 ( 84, -5)  
Nov. 18  16 14.79   -9 46.9   1.629   0.709    13   12.0  18:20 ( 81, -4)  

* 24P/Schaumasse

Now it is 11.4 mag (Nov. 3, Thomas Lehmann). It is fainter than this ephemeris recently. It stays 11 mag until December. It is observable in good condition in the Northern Hemisphere. It locates very low for a long time in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  11 49.98    9 24.5   1.465   1.209    54   10.5   5:03 (286, 37)  
Nov. 18  12 16.77    7 13.6   1.460   1.206    55   10.5   5:09 (289, 37)  

* 62P/Tsuchinshan 1

Now it is very bright as 10.8 mag (Nov. 2, Maik Meyer). It stays 11 mag until 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. 11  10 47.63   12 22.8   1.365   1.385    69   11.2   5:03 (296, 50)  
Nov. 18  11 10.68   11  0.8   1.336   1.384    71   11.2   5:09 (300, 51)  

* C/2016 R2 ( PanSTARRS )

Now it is 12.8 mag (Oct. 30, Chris Wyatt). It will stay bright as 11 mag for a long time from winter to next spring. In the Southern Hemisphere, it stays observable in good condition until next February. In the Northern Hemispehre, it stays observable for a long time after this until the comet fades out.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   5 24.25    1 53.6   2.366   3.207   142   11.9   2:05 (  0, 57)  
Nov. 18   5 18.07    3  2.7   2.273   3.166   149   11.8   1:31 (  0, 58)  

* C/2015 V2 ( Johnson )

It brightened up to 7.1 mag from May to June (June 21, Juan Jose Gonzalez). Now it is fading. It has already faded down to 12.2 mag (Oct. 19, Chris Wyatt). 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)  
Nov. 11  18 26.74  -56 55.5   2.987   2.544    54   12.0  18:24 ( 25,-11)  
Nov. 18  18 49.44  -57  3.6   3.092   2.608    52   12.2  18:20 ( 25,-11)  

* 29P/Schwassmann-Wachmann 1

Now it is bright as 12.9 mag (Oct. 26, Seiichi Yoshida).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  21  8.75  -14 13.4   5.780   5.809    86   13.5  18:24 ( 12, 40)  
Nov. 18  21 11.19  -14  0.1   5.891   5.808    80   13.6  18:20 ( 19, 39)  

* 240P/NEAT

It brightened very rapidly from July to August. Now it is very bright as 14.2 mag (Nov. 8, Chris Wyatt). It is observable in excellent condition in the Southern Hemisphere. It stays low for a while in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  23 52.22  -32 11.1   2.011   2.558   112   13.8  20:29 (  0, 23)  
Nov. 18  23 52.03  -30 40.7   2.056   2.531   107   13.7  20:02 (  0, 25)  

* 71P/Clark

It brightened up to 10 mag from spring to summer. Now it is fading. It has already faded down to 13.2 mag (Nov. 7, Thomas Lehmann). It is observable in excellent condition in the Southern Hemisphere. It locates low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  20 50.11  -27 45.9   1.942   2.004    78   14.0  18:24 ( 14, 26)  
Nov. 18  21  5.24  -26 21.6   2.047   2.041    75   14.3  18:20 ( 16, 27)  

* C/2016 N6 ( PanSTARRS )

Now it is 13.7 mag (Sept. 22, Sandor Szabo). It is expected to brighten up to 12 mag from 2018 to 2019. In the Northern Hemisphere, it stays observable in good condition while the comet will be brightening gradually. In the Southern Hemisphere, it is not observable until 2018 October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  15 12.49   47  8.5   4.000   3.684    64   14.4  18:24 (134, 20)  
Nov. 18  15 16.63   47 16.8   3.916   3.638    66   14.3   5:09 (227, 22)  

* C/2016 M1 ( PanSTARRS )

Now it is 14.4 mag (Oct. 9, Yasukazu Ikari). It is expected to brighten up to 10 mag in summer in 2018. In the Northern Hemisphere, it stays observable until 2018 summer while the comet will be brightening. However, it will be extremely low from December to January. In the Southern Hemisphere, it is hardly observable in 2017, but it will be observable in good condition in 2018.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  17 30.86   17 52.0   4.256   3.704    50   14.5  18:24 ( 91, 31)  
Nov. 18  17 36.52   16 14.6   4.255   3.648    46   14.4  18:20 ( 92, 27)  

* C/2015 O1 ( PanSTARRS )

Now it is 13.6 mag (Oct. 23, T. Ikemura, H. Sato). It will be observable at 14 mag for a long time from 2017 to 2018. In the Southern Hemisphere, it will be hardly observable after this. It will be extremely low from November to December in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  16 13.83   18 57.7   4.538   3.834    40   14.7  18:24 (102, 16)  
Nov. 18  16 16.25   19  7.6   4.528   3.820    39   14.6  18:20 (105, 12)  

* C/2015 ER61 ( PanSTARRS )

It brightened up to 6.2 mag in April (Apr. 7, Juan Jose Gonzalez). Now it is fading rapidly. It has already faded down to 13.6 mag (Oct. 17, Thomas Lehmann). It stays observable for a long time after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   3 10.01   18 42.5   1.893   2.883   178   14.8  23:46 (  0, 74)  
Nov. 18   3  2.92   18  0.8   1.980   2.963   172   15.1  23:12 (  0, 73)  

* 217P/LINEAR

It brightened up to 12.2 mag in August (Aug. 21, Juan Jose Gonzalez). It is fading now. It has already faded down to 14.0 mag (Oct. 1, Michael Jager).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   8 19.36    9 58.4   1.376   1.874   103   14.8   4:59 (  0, 65)  
Nov. 18   8 21.54   10 10.1   1.354   1.931   110   15.0   4:34 (  0, 65)  

* 145P/Shoemaker-Levy 5

Now it is 15.0 mag (Oct. 30, D. Buczynski). It brightened rapidly. It is observable at 15 mag in autumn 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. 11   5 41.42   36 41.9   1.146   2.011   140   15.0   2:22 (180, 88)  
Nov. 18   5 38.72   37 46.3   1.130   2.032   146   15.0   1:52 (180, 87)  

* C/2015 V1 ( PanSTARRS )

Now it is 14.4 mag (Oct. 27, Catalina Sky Survey). It stays observable at 15-16 mag for a long time from 2017 to 2018.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   0 45.07   10 18.1   3.425   4.278   145   15.0  21:22 (  0, 65)  
Nov. 18   0 37.07    8 22.5   3.507   4.274   136   15.0  20:46 (  0, 63)  

* C/2017 T1 ( Heinze )

Now it is 16.6 mag (Oct. 11, Catalina Sky Survey). It will approach to Earth down to 0.2 a.u., and to Sun down to 0.6 a.u., and it is expected to brighten up to 9 mag from winter to spring. In the Northern Hemisphre, it stays observable in good condition until January, but it will be extremely low after that. In the Southern Hemisphere, it is not observable from January to mid March, but it stays observable in good condition except for that period.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   8 48.87   -3 57.7   1.683   1.989    92   15.6   5:03 (350, 51)  
Nov. 18   8 52.60   -3 30.6   1.470   1.887    98   15.1   5:05 (  0, 51)  

* (3200) Phaethon

Now it is 16.4 mag (Oct. 29, Katsumi Yoshimoto). It will approach to Earth down to 0.07 a.u. in mid December, and it will brighten up to 10 mag. In the Northern Hemisphere, it stays observable in excellent condition until mid December. In the Southern Hemisphere, it stays low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   7  5.74   35 12.8   0.704   1.501   123   15.8   3:46 (180, 90)  
Nov. 18   7  5.74   36  0.7   0.562   1.420   130   15.2   3:19 (180, 89)  

* C/2015 VL62 ( Lemmon-Yeung-PanSTARRS )

Now it is 15.9 mag (Oct. 9, T. Ikemura, H. Sato). It will be fading after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  19  5.06  -16 29.8   3.237   2.828    57   15.2  18:24 ( 44, 26)  
Nov. 18  19  4.43  -17  6.2   3.381   2.849    50   15.3  18:20 ( 48, 22)  

* C/2016 N4 ( MASTER )

Now it is 13.7 mag (Oct. 13, Juan Jose Gonzalez). In the Northern Hemisphere, it stays 15 mag until winter, and it is observable in excellent condition. It is not observable at all after this in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  19 49.90   64 53.3   2.952   3.243    98   15.4  18:24 (159, 55)  
Nov. 18  19 46.99   63 55.4   2.995   3.255    96   15.4  18:20 (154, 54)  

* C/2011 KP36 ( Spacewatch )

Now it is 15.6 mag (Oct. 25, Yasukazu Ikari). It stays 17 mag in 2018.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   3 27.01   -0 38.5   5.229   6.175   161   15.5   0:08 (  0, 54)  
Nov. 18   3 24.42   -0 53.6   5.266   6.204   159   15.5  23:33 (  0, 54)  

* C/2017 K6 ( Jacques )

Now it is 14.7 mag (Nov. 8, Chris Wyatt). It stays 15 mag until winter. In the Southern Hemisphere, it stays observable in excellent condition until spring in 2018. In the Northern Hemisphere, it stays unobservable until 2018.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   1 33.27  -73 32.2   1.892   2.103    87   15.6  22:09 (  0,-18)  
Nov. 18   1 27.78  -70 39.3   1.871   2.079    87   15.5  21:37 (  0,-15)  

* C/2017 K4 ( ATLAS )

Now it is 15.0 mag (Oct. 10, T. Ikemura, H. Sato). It stays 16 mag for a long time until summer in 2018. It will be unobservable from winter to spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  18 41.95  -23 47.9   3.222   2.711    51   15.9  18:24 ( 43, 17)  
Nov. 18  18 54.74  -23  2.2   3.273   2.697    46   15.9  18:20 ( 46, 16)  

* 74P/Smirnova-Chernykh

Now it is 16.7 mag (Nov. 2, A. Diepvens). It will be observable at 15 mag in good condition from winter to spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  11 18.87   10 47.0   3.896   3.547    62   16.0   5:03 (291, 43)  
Nov. 18  11 25.66   10 15.3   3.801   3.545    67   15.9   5:09 (297, 48)  

* 47P/Ashbrook-Jackson

Now it is 15.7 mag (Oct. 30, Catalina Sky Survey). It will be fading after this, and it will be fainter than 18 mag in March.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   0 59.38   17 28.2   2.051   2.951   150   16.0  21:36 (  0, 73)  
Nov. 18   0 56.52   17 19.4   2.114   2.963   142   16.1  21:06 (  0, 72)  

* C/2014 B1 ( Schwartz )

Appearing in the morning sky. It stays 16-17 mag for a long time from 2016 to 2019. It stays near by the equator.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  10 27.63    4  5.1   9.831   9.563    71   16.1   5:03 (310, 48)  
Nov. 18  10 29.49    4  0.1   9.720   9.564    78   16.1   5:09 (320, 52)  

* C/2017 S6 ( Catalina )

Now it is 17.1 mag (Oct. 27, Yuji Ohshima). It stays observable at 16 mag for a long time until summer in 2018. It is observable in good condition in the Northern Hemisphere in 2017, and in the Southern Hemisphere in 2018.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   4  3.57   65 26.6   1.332   2.116   130   16.4   0:49 (180, 60)  
Nov. 18   2 31.02   64 42.7   1.248   2.056   133   16.1  22:33 (180, 60)  

* C/2016 A1 ( PanSTARRS )

Now it is 16.4 mag (Oct. 26, Purple Mountain Observatory, XuYi Station). It stays 16 mag for a long time from 2017 to 2018. It is observable in excellent 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)  
Nov. 11   9 17.04   24  2.8   5.164   5.329    94   16.3   5:03 (310, 74)  
Nov. 18   9 15.68   25  6.3   5.038   5.328   101   16.3   5:09 (336, 79)  

* 355P/2017 M2 ( LINEAR-NEAT )

Now it is 15.9 mag (Nov. 2, ATLAS-HKO, Haleakala). Return of a new periodic comet which brightened up to 13 mag in 2004. It will be observable in excellent condition in autumn. It was expected to brighten up to 14 mag, if the comet is as bright as when it was discovered. But actually, it is much fainter than expected.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   2 23.68   10 33.8   0.757   1.738   168   16.5  23:00 (  0, 66)  
Nov. 18   2 19.37   11 56.9   0.785   1.749   160   16.6  22:28 (  0, 67)  

* 30P/Reinmuth 1

Now it is 17.2 mag (Nov. 2, A. Diepvens). It stays observable at 17 mag in good condition for a while. It will be fainter than 18 mag in May.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  12 39.37    0 55.3   2.670   2.016    40   16.6   5:03 (285, 22)  
Nov. 18  12 53.90   -0 18.1   2.642   2.039    43   16.6   5:09 (289, 25)  

* C/2017 M4 ( ATLAS )

Now it is 16.4 mag (Oct. 26, D. Buczynski). It is expected to brighten up to 13-14 mag from 2018 to 2019. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until summer in 2018.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  18 31.51   48 20.3   5.183   5.109    80   16.7  18:24 (126, 52)  
Nov. 18  18 34.62   46 50.7   5.182   5.063    77   16.6  18:20 (123, 48)  

* C/2016 T3 ( PanSTARRS )

Now it is 16.6 mag (Oct. 24, Catalina Sky Survey). It will be observable at 16.5 mag in good condition in winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   9 36.69    0 25.0   2.684   2.735    82   16.7   5:03 (330, 51)  
Nov. 18   9 42.85   -1 20.1   2.618   2.754    87   16.7   5:09 (341, 52)  

* 90P/Gehrels 1

Now it is 16.9 mag (Nov. 2, A. Diepvensy). In the Northern Hemisphere, it will be observable at 17 mag in excellent condition from autumn to winter. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   5 42.38   34 58.8   2.316   3.145   140   16.7   2:23 (  0, 90)  
Nov. 18   5 39.27   35 21.6   2.280   3.161   147   16.7   1:52 (180, 90)  

* C/2014 OE4 ( PanSTARRS )

Now it is 16.1 mag (Oct. 29, N. James). It stays 16 mag from 2016 to 2017. 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)  
Nov. 11  18 31.86   59 28.0   6.620   6.652    87   16.8  18:24 (143, 50)  
Nov. 18  18 40.37   59 10.5   6.644   6.669    87   16.9  18:20 (142, 48)  

* 213P/Van Ness

It brightened up to 13.5 mag in July (July 5, Chris Wyatt). But it is fading after that, even before the perihelion passage. It has already faded down to 16.8 mag (Oct. 29, ATLAS-MLO, Mauna Loa). It is observable in excellent 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. 11  20 34.22  -14  2.8   1.960   2.018    78   16.9  18:24 ( 22, 38)  
Nov. 18  20 47.51  -12 52.7   2.041   2.028    75   17.0  18:20 ( 26, 38)  

* C/2010 U3 ( Boattini )

Now it is 16.7 mag (Oct. 25, Ken-ichi Kadota). It will pass the perihelion in 2019. However, it has not been brightening since the discovery in 2010. It is observable in good conditioin in the Northern Hemisphere. It is not observable for a long time in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   7  3.61   73 18.9   8.428   8.893   115   16.9   3:45 (180, 52)  
Nov. 18   7  1.51   73 59.1   8.367   8.880   118   16.9   3:15 (180, 51)  

* 103P/Hartley 2

Now it is 18.5 mag (Oct. 21, Jonathan L. Tuten, D. Breedlove, B. Lutkenhoner). Appearing in the morning sky. It will be fading slowly after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  11 26.96   -7 36.8   3.028   2.570    53   17.0   5:03 (305, 29)  
Nov. 18  11 34.26   -8 36.6   3.001   2.626    58   17.1   5:09 (312, 33)  

* 188P/LINEAR-Mueller

Now it is 18.1 mag (Oct. 25, D. Buczynski). It is observable 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)  
Nov. 11   7 28.76   35  5.7   2.508   3.113   119   17.1   4:09 (180, 90)  
Nov. 18   7 28.57   35 29.4   2.452   3.137   126   17.1   3:41 (180, 90)  

* (944) Hidalgo

Now it is 16.6 mag (Sept. 16, P. Camilleri, H. Williams). It will brighten up to 14 mag from autumn to winter in 2018, and it will be observable in excellent condition in the Northern Hemisphere. In 2017, it is observable at 17 mag in excellent condition in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  22 57.55  -39 45.0   3.369   3.658    99   17.1  19:35 (  0, 15)  
Nov. 18  22 56.37  -38 16.6   3.417   3.614    93   17.1  19:06 (  0, 17)  

* C/2017 T3 ( ATLAS )

Now it is 17.3 mag (Oct. 22, C. Rinner, F. Kugel). It will brighten up to 9 mag in 2018 summer. However, it is hardly observable when it is bright. In the Northern Hemisphere, it is observable only until March when it brightens up to 14 mag. In the Southern Hemisphere, it is observable from July to September in 2018, but it locates in extremely low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  21 31.03   73 53.0   3.281   3.716   108   17.3  18:24 (178, 51)  
Nov. 18  21 36.82   71 43.1   3.202   3.637   108   17.1  18:20 (176, 53)  

* 352P/2017 L1 ( Skiff )

First return of a new periodic comet discovered in 2000. Now it is 15.9 mag (Oct. 29, Catalina Sky Survey). Although it has been brightening even after the perihelion passage, it will be fading after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   0 26.20   -2 25.0   2.001   2.802   136   17.2  21:03 (  0, 53)  
Nov. 18   0 24.90   -1 26.8   2.093   2.826   129   17.4  20:34 (  0, 54)  

* C/2015 XY1 ( Lemmon )

Now it is 16.6 mag (Oct. 26, Yuji Ohshima). It stays observable at 18 mag for a long time until 2019.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11   6 52.66   19 37.8   7.373   7.996   126   17.9   3:33 (  0, 75)  
Nov. 18   6 48.25   19 26.0   7.271   7.990   134   17.8   3:01 (  0, 74)  

* A/2017 U1

Possible first interstellar object in the history. It approached to Sun down to 0.25 a.u. on Sept. 9. Now it is fading rapidly. It was 19.0 mag in mid October (Oct. 14, Catalina Sky Survey). But it has already fade down to 23.9 mag (Nov. 10, W. H. Ryan, E. V. Ryan).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Nov. 11  23 21.77    6  1.0   0.993   1.755   124   24.2  19:59 (  0, 61)  
Nov. 18  23 17.80    6 22.6   1.251   1.912   116   24.9  19:27 (  0, 61)  

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

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