123P/West-Hartley 
   From 2151 observations 1989 Mar. 14-2017 Sept. 27.(5) Kinoshita
   Epoch = 2018 Apr. 12.0 TT = JDT 2458220.5 
       T = 2019 Feb. 5.06078 TT             peri.= 102.99489 
       e = 0.4488576                        node =  46.50115 (2000.0) 
       q = 2.1268865 AU                     incl.=  15.35994 
   a = 3.8590508 AU          n = 0.13001197         P = 7.58 years 
  m1 = 7.0 + 5log(delta) + 20.0log(r) 
  A. Node = E:11/09.3 JST  O:2018/01/11.7 JST  3.428 AU 
  D. Node = E:05/07.7 JST  O:2019/10/09.0 JST  2.799 AU 

2018   JST     R.A. (2000) D.C.    Delta     r    Elong. Phase   dMo./P.A.   Tail/P.A. M-O Ag   m1     H/A
03/23 19:50   02 47.43  +18 45.1   3.777   3.118   42.6   12.5   19.0/ 67.1   0.3/ 70   33  6  19.8  +21/ 99
03/24 19:50   02 48.66  +18 52.4   3.783   3.114   42.0   12.4   19.1/ 67.2   0.3/ 70   46  7  19.8  +21/ 99
03/25 19:50   02 49.90  +18 59.8   3.788   3.109   41.3   12.2   19.2/ 67.4   0.3/ 70   60  8  19.7  +20/100
03/26 19:50   02 51.15  +19 07.2   3.793   3.105   40.6   12.1   19.3/ 67.5   0.3/ 70   74  9  19.7  +20/100
03/27 19:50   02 52.41  +19 14.6   3.798   3.100   40.0   11.9   19.4/ 67.6   0.3/ 70   87 10  19.7  +19/100
03/28 19:50   02 53.68  +19 21.9   3.803   3.096   39.3   11.8   19.5/ 67.7   0.3/ 70  101 11  19.7  +19/101
03/29 19:50   02 54.96  +19 29.3   3.808   3.092   38.6   11.6   19.7/ 67.9   0.3/ 70  115 13  19.7  +18/101
03/30 19:50   02 56.25  +19 36.7   3.813   3.087   38.0   11.5   19.8/ 68.0   0.3/ 70  128 14  19.7  +18/102
03/31 19:50   02 57.54  +19 44.1   3.817   3.083   37.3   11.3   19.9/ 68.1   0.3/ 70  142 15  19.7  +17/102
04/01 19:50   02 58.85  +19 51.5   3.821   3.078   36.7   11.2   20.0/ 68.2   0.3/ 70  154 16  19.7  +17/103
04/02 19:50   03 00.17  +19 58.9   3.826   3.074   36.0   11.0   20.1/ 68.4   0.3/ 70  166 17  19.7  +16/103
04/03 19:40   03 01.48  +20 06.2   3.830   3.070   35.4   10.9   20.2/ 68.5   0.3/ 70  172 18  19.7  +18/102
04/04 19:40   03 02.82  +20 13.6   3.834   3.065   34.7   10.7   20.3/ 68.6   0.3/ 70  165 19  19.6  +18/103
04/05 19:40   03 04.16  +20 21.0   3.837   3.061   34.1   10.6   20.4/ 68.7   0.3/ 70  154 20  19.6  +17/103
04/06 19:40   03 05.52  +20 28.4   3.841   3.056   33.5   10.4   20.5/ 68.8   0.3/ 70  143 20  19.6  +17/104
04/07 19:40   03 06.88  +20 35.8   3.845   3.052   32.8   10.2   20.6/ 69.0   0.3/ 70  131 21  19.6  +16/104
04/08 19:40   03 08.25  +20 43.2   3.848   3.048   32.2   10.1   20.7/ 69.1   0.3/ 69  120 22  19.6  +16/105
04/09 19:40   03 09.63  +20 50.5   3.851   3.043   31.5    9.9   20.8/ 69.2   0.2/ 69  109 23  19.6  +15/105
04/10 19:40   03 11.02  +20 57.9   3.854   3.039   30.9    9.8   20.9/ 69.3   0.2/ 69   97 24  19.6  +15/105
04/11 19:40   03 12.42  +21 05.2   3.857   3.034   30.3    9.6   21.0/ 69.5   0.2/ 69   86 25  19.6  +14/106
04/12 19:40   03 13.83  +21 12.6   3.860   3.030   29.7    9.4   21.1/ 69.6   0.2/ 69   74 26  19.6  +14/106
04/13 19:40   03 15.24  +21 19.9   3.863   3.026   29.0    9.3   21.2/ 69.7   0.2/ 69   61 27  19.6  +14/107
04/14 19:40   03 16.67  +21 27.3   3.865   3.021   28.4    9.1   21.3/ 69.8   0.2/ 69   49 28  19.5  +13/107
04/15 19:40   03 18.10  +21 34.6   3.868   3.017   27.8    8.9   21.4/ 70.0   0.2/ 69   36 29  19.5  +13/108
04/16 19:40   03 19.54  +21 41.9   3.870   3.013   27.2    8.8   21.5/ 70.1   0.2/ 69   24  1  19.5  +12/108
04/17 19:40   03 20.99  +21 49.2   3.872   3.008   26.6    8.6   21.6/ 70.2   0.2/ 69   12  2  19.5  +12/108
04/18 19:30   03 22.44  +21 56.4   3.874   3.004   26.0    8.4   21.7/ 70.3   0.2/ 69   10  3  19.5  +13/108
04/19 19:30   03 23.91  +22 03.6   3.876   2.999   25.4    8.2   21.7/ 70.5   0.2/ 68   21  4  19.5  +13/108
04/20 19:30   03 25.38  +22 10.9   3.878   2.995   24.8    8.1   21.8/ 70.6   0.2/ 68   34  5  19.5  +13/108
04/21 19:30   03 26.87  +22 18.1   3.879   2.991   24.2    7.9   21.9/ 70.7   0.2/ 68   47  6  19.5  +12/109
04/22 19:30   03 28.36  +22 25.3   3.881   2.986   23.6    7.7   22.0/ 70.9   0.2/ 68   61  7  19.4  +12/109
04/23 19:30   03 29.86  +22 32.5   3.882   2.982   23.0    7.6   22.1/ 71.0   0.2/ 68   75  8  19.4  +11/110
inserted by FC2 system