21P/Giacobini-Zinner 
   From 2472 observations 2011 Aug. 6-2019 Apr. 11.(16) Kinoshita
   Epoch = 2019 June 26.0 TT = JDT 2458660.5 
       T = 2018 Sept. 10.27704 TT           peri.= 172.85240 
       e = 0.7104308                        node = 195.38519 (2000.0) 
       q = 1.0126070 AU                     incl.=  31.99941 
   a = 3.4969435 AU          n = 0.15072009         P = 6.54 years 
  m1 = 13.5 + 5log(delta) + 5.0log(r) 
  A. Node = E:04/06.1 JST  O:2015/12/16.1 JST  5.869 AU 
  D. Node = E:10/09.6 JST  O:2018/09/16.3 JST  1.016 AU 

2019   JST     R.A. (2000) D.C.    Delta     r    Elong. Phase   dMo./P.A.   Tail/P.A. M-O Ag   m1     H/A
06/06 20:00   08 06.64  -03 16.5   3.596   3.097   53.3   15.2   19.7/ 86.5   0.4/122   25  3  18.7  +12/ 77
06/07 20:00   08 07.95  -03 15.4   3.613   3.105   52.7   15.1   19.6/ 86.9   0.4/122   25  4  18.7  +11/ 78
06/08 20:00   08 09.26  -03 14.3   3.630   3.112   52.1   14.9   19.6/ 87.2   0.4/122   31  5  18.8  +11/ 78
06/09 20:00   08 10.57  -03 13.3   3.647   3.119   51.6   14.8   19.6/ 87.5   0.4/123   41  7  18.8  +10/ 79
06/10 20:00   08 11.88  -03 12.5   3.664   3.126   51.0   14.6   19.6/ 87.8   0.4/123   53  8  18.8  +10/ 79
06/11 20:00   08 13.19  -03 11.7   3.681   3.134   50.4   14.5   19.6/ 88.2   0.4/124   65  9  18.8   +9/ 80
06/12 19:50   08 14.48  -03 11.1   3.698   3.141   49.9   14.3   19.5/ 88.5   0.4/124   77 10  18.8  +11/ 78
06/13 19:50   08 15.79  -03 10.6   3.714   3.148   49.3   14.2   19.5/ 88.8   0.4/125   89 11  18.8  +10/ 79
06/14 19:50   08 17.09  -03 10.2   3.731   3.155   48.7   14.0   19.5/ 89.1   0.4/125  101 12  18.9  +10/ 79
06/15 19:50   08 18.39  -03 09.9   3.748   3.162   48.2   13.9   19.5/ 89.4   0.4/126  113 13  18.9   +9/ 80
06/16 19:50   08 19.69  -03 09.7   3.764   3.169   47.6   13.7   19.5/ 89.7   0.4/126  124 14  18.9   +9/ 80
06/17 19:50   08 20.99  -03 09.6   3.780   3.177   47.1   13.5   19.5/ 90.0   0.3/126  135 15  18.9   +8/ 80
06/18 19:50   08 22.29  -03 09.6   3.796   3.184   46.5   13.4   19.4/ 90.3   0.3/127  145 16  18.9   +7/ 81
06/19 19:50   08 23.59  -03 09.7   3.813   3.191   45.9   13.2   19.4/ 90.6   0.3/127  152 17  18.9   +7/ 81
06/20 19:50   08 24.89  -03 09.9   3.829   3.198   45.4   13.1   19.4/ 90.9   0.3/128  156 18  18.9   +6/ 82
06/21 19:40   08 26.17  -03 10.2   3.844   3.205   44.8   12.9   19.4/ 91.2   0.3/128  155 19  19.0   +8/ 80
06/22 19:40   08 27.46  -03 10.6   3.860   3.212   44.3   12.8   19.3/ 91.5   0.3/129  149 19  19.0   +7/ 81
06/23 19:40   08 28.76  -03 11.1   3.876   3.219   43.7   12.6   19.3/ 91.8   0.3/129  141 20  19.0   +7/ 81
06/24 19:40   08 30.05  -03 11.8   3.891   3.226   43.2   12.4   19.3/ 92.1   0.3/130  132 21  19.0   +6/ 82
06/25 19:40   08 31.33  -03 12.5   3.907   3.233   42.6   12.3   19.3/ 92.4   0.3/130  122 22  19.0   +6/ 82
06/26 19:40   08 32.62  -03 13.3   3.922   3.240   42.1   12.1   19.3/ 92.7   0.3/131  111 23  19.0   +5/ 82
06/27 19:40   08 33.91  -03 14.1   3.937   3.247   41.5   12.0   19.2/ 92.9   0.3/131  100 24  19.0   +5/ 83
06/28 19:40   08 35.19  -03 15.1   3.953   3.254   41.0   11.8   19.2/ 93.2   0.3/132   89 25  19.0   +4/ 83
06/29 19:30   08 36.46  -03 16.2   3.967   3.261   40.4   11.7   19.2/ 93.5   0.3/133   78 26  19.1   +6/ 82
06/30 19:30   08 37.74  -03 17.4   3.982   3.268   39.9   11.5   19.2/ 93.8   0.3/133   66 27  19.1   +5/ 82
07/01 19:30   08 39.02  -03 18.6   3.997   3.275   39.4   11.4   19.2/ 94.0   0.3/134   54 28  19.1   +4/ 83
07/02 19:30   08 40.30  -03 20.0   4.012   3.282   38.8   11.2   19.1/ 94.3   0.3/134   42 29  19.1   +4/ 83
07/03 19:30   08 41.57  -03 21.4   4.026   3.289   38.3   11.0   19.1/ 94.6   0.3/135   32  1  19.1   +3/ 84
07/04 19:30   08 42.84  -03 22.9   4.041   3.296   37.7   10.9   19.1/ 94.9   0.3/136   24  2  19.1   +3/ 84
07/05 19:30   08 44.11  -03 24.5   4.055   3.303   37.2   10.7   19.1/ 95.1   0.3/136   24  3  19.1   +2/ 84
07/06 19:20   08 45.37  -03 26.2   4.069   3.310   36.7   10.6   19.0/ 95.4   0.3/137   31  4  19.1   +4/ 83
inserted by FC2 system