21P/Giacobini-Zinner 
   From 752 observations 2004 June 21-2018 Feb. 21.(16) Kinoshita
   Epoch = 2018 Apr. 12.0 TT = JDT 2458220.5 
       T = 2018 Sept. 10.27937 TT           peri.= 172.85644 
       e = 0.7104756                        node = 195.39542 (2000.0) 
       q = 1.0128406 AU                     incl.=  31.99771 
   a = 3.4982908 AU          n = 0.15063303         P = 6.54 years 
  m1 = 9.0 + 5log(delta) + 17.5log(r) 
  A. Node = E:04/05.9 JST  O:2015/12/15.4 JST  5.872 AU 
  D. Node = E:10/09.1 JST  O:2018/09/16.3 JST  1.016 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 03:10   18 41.92  +05 47.2   2.252   2.319   81.2   25.1   27.3/ 57.2   1.0/270  139  5  17.2  +34/289
03/24 03:10   18 43.46  +06 02.1   2.234   2.310   81.6   25.3   27.5/ 56.7   1.1/270  148  6  17.1  +34/289
03/25 03:10   18 45.00  +06 17.1   2.215   2.301   82.1   25.4   27.6/ 56.3   1.1/269  153  7  17.1  +35/289
03/26 03:10   18 46.54  +06 32.4   2.197   2.293   82.6   25.6   27.7/ 55.9   1.1/269  152  9  17.0  +36/289
03/27 03:00   18 48.06  +06 47.8   2.179   2.284   83.1   25.7   27.8/ 55.4   1.1/269  145 10  17.0  +34/288
03/28 03:00   18 49.60  +07 03.5   2.160   2.275   83.5   25.8   27.9/ 55.0   1.1/268  136 11  16.9  +35/288
03/29 03:00   18 51.14  +07 19.5   2.142   2.267   84.0   26.0   28.0/ 54.6   1.1/268  125 12  16.9  +35/288
03/30 03:00   18 52.67  +07 35.7   2.124   2.258   84.5   26.1   28.1/ 54.2   1.1/267  113 13  16.8  +36/288
03/31 02:50   18 54.19  +07 52.1   2.106   2.249   84.9   26.3   28.2/ 53.7   1.2/267  101 14  16.8  +35/286
04/01 02:50   18 55.73  +08 08.8   2.088   2.240   85.4   26.4   28.3/ 53.3   1.2/266   90 15  16.7  +35/287
04/02 02:50   18 57.26  +08 25.7   2.069   2.232   85.8   26.5   28.5/ 52.9   1.2/266   78 16  16.7  +36/287
04/03 02:50   18 58.79  +08 42.9   2.052   2.223   86.3   26.7   28.6/ 52.4   1.2/265   68 17  16.6  +37/287
04/04 02:50   19 00.32  +09 00.3   2.034   2.214   86.7   26.8   28.7/ 52.0   1.2/265   57 18  16.6  +37/287
04/05 02:40   19 01.84  +09 17.8   2.016   2.205   87.1   26.9   28.8/ 51.6   1.2/265   48 19  16.5  +36/285
04/06 02:40   19 03.37  +09 35.8   1.998   2.196   87.6   27.1   29.0/ 51.1   1.2/264   40 20  16.5  +37/286
04/07 02:40   19 04.89  +09 53.9   1.980   2.187   88.0   27.2   29.1/ 50.7   1.3/264   34 21  16.4  +37/286
04/08 02:40   19 06.42  +10 12.3   1.963   2.178   88.4   27.3   29.2/ 50.3   1.3/263   31 22  16.4  +38/286
04/09 02:30   19 07.93  +10 30.9   1.945   2.170   88.8   27.5   29.4/ 49.9   1.3/263   31 22  16.3  +37/284
04/10 02:30   19 09.46  +10 49.8   1.928   2.161   89.2   27.6   29.5/ 49.4   1.3/262   35 23  16.3  +37/284
04/11 02:30   19 10.98  +11 09.0   1.910   2.152   89.6   27.8   29.6/ 49.0   1.3/262   42 24  16.2  +38/284
04/12 02:30   19 12.50  +11 28.4   1.893   2.143   90.1   27.9   29.8/ 48.6   1.4/261   50 25  16.2  +39/284
04/13 02:20   19 14.01  +11 47.9   1.876   2.134   90.4   28.0   29.9/ 48.1   1.4/261   59 26  16.1  +37/283
04/14 02:20   19 15.53  +12 07.9   1.859   2.125   90.8   28.2   30.0/ 47.7   1.4/260   69 27  16.1  +38/283
04/15 02:20   19 17.05  +12 28.1   1.842   2.116   91.2   28.3   30.2/ 47.3   1.4/260   80 28  16.0  +39/283
04/16 02:20   19 18.56  +12 48.6   1.825   2.107   91.6   28.4   30.3/ 46.9   1.4/260   91 29  16.0  +39/283
04/17 02:20   19 20.08  +13 09.3   1.808   2.098   92.0   28.6   30.5/ 46.5   1.4/259  102  1  15.9  +40/283
04/18 02:10   19 21.58  +13 30.1   1.791   2.089   92.4   28.7   30.6/ 46.0   1.5/259  113  2  15.9  +39/281
04/19 02:10   19 23.10  +13 51.3   1.775   2.080   92.7   28.8   30.8/ 45.6   1.5/258  123  3  15.8  +39/281
04/20 02:10   19 24.61  +14 12.8   1.758   2.071   93.1   29.0   30.9/ 45.2   1.5/258  133  4  15.8  +40/281
04/21 02:10   19 26.12  +14 34.6   1.741   2.062   93.4   29.1   31.1/ 44.8   1.5/257  140  5  15.7  +41/281
04/22 02:00   19 27.62  +14 56.5   1.725   2.053   93.8   29.2   31.2/ 44.4   1.5/257  144  6  15.7  +40/280
04/23 02:00   19 29.13  +15 18.8   1.709   2.044   94.1   29.4   31.4/ 44.0   1.6/256  144  7  15.6  +40/280
inserted by FC2 system