117P/Helin-Roman-Alu 
   From 4104 observations 1988 Aug. 10-2017 Mar. 17. Kinoshita
   Epoch = 2018 Sept. 19.0 TT = JDT 2458380.5 
       T = 2022 July 6.45642 TT             peri.= 222.51833 
       e = 0.2551930                        node =  58.87615 (2000.0) 
       q = 3.0468032 AU                     incl.=   8.70165 
   a = 4.0907284 AU          n = 0.11912505         P = 8.27 years 
  m1 = 5.0 + 5log(delta) + 15.0log(r) 
  A. Node = E:11/21.9 JST  O:2025/02/23.2 JST  4.710 AU 
  D. Node = E:05/20.6 JST  O:2021/12/06.2 JST  3.219 AU 

2018   JST     R.A. (2000) D.C.    Delta     r    Elong. Phase   dMo./P.A.   Tail/P.A. M-O Ag   m1     H/A
09/09 03:40   08 05.32  +26 28.1   5.732   5.116   48.2    8.4   10.7/ 95.9   0.1/287   35 28  19.4  +24/253
09/10 03:40   08 06.11  +26 27.0   5.720   5.116   49.0    8.5   10.6/ 95.9   0.1/287   49  0  19.4  +24/254
09/11 03:40   08 06.90  +26 25.9   5.708   5.115   49.8    8.6   10.5/ 95.8   0.1/287   63  1  19.4  +25/254
09/12 03:40   08 07.68  +26 24.9   5.695   5.115   50.6    8.7   10.4/ 95.8   0.2/287   77  2  19.4  +26/255
09/13 03:40   08 08.45  +26 23.8   5.682   5.115   51.3    8.8   10.3/ 95.7   0.2/287   91  3  19.4  +26/255
09/14 03:40   08 09.22  +26 22.8   5.670   5.114   52.1    8.9   10.3/ 95.6   0.2/287  104  4  19.4  +27/255
09/15 03:30   08 09.97  +26 21.8   5.657   5.114   52.9    9.0   10.2/ 95.6   0.2/287  117  5  19.4  +26/255
09/16 03:30   08 10.72  +26 20.8   5.644   5.114   53.7    9.1   10.1/ 95.5   0.2/287  129  6  19.4  +26/255
09/17 03:30   08 11.47  +26 19.8   5.631   5.113   54.5    9.2   10.0/ 95.4   0.2/287  141  7  19.4  +27/255
09/18 03:30   08 12.21  +26 18.9   5.617   5.113   55.3    9.3    9.9/ 95.3   0.2/287  153  8  19.4  +27/256
09/19 03:30   08 12.94  +26 17.9   5.604   5.113   56.1    9.4    9.8/ 95.2   0.2/287  164  9  19.4  +28/256
09/20 03:30   08 13.66  +26 17.0   5.590   5.112   57.0    9.5    9.7/ 95.1   0.2/287  173 10  19.4  +29/257
09/21 03:30   08 14.38  +26 16.2   5.576   5.112   57.8    9.6    9.6/ 95.0   0.2/287  169 11  19.4  +29/257
09/22 03:20   08 15.08  +26 15.3   5.563   5.111   58.6    9.6    9.5/ 94.9   0.2/287  159 12  19.4  +28/256
09/23 03:20   08 15.79  +26 14.5   5.549   5.111   59.4    9.7    9.4/ 94.8   0.2/287  147 13  19.3  +29/257
09/24 03:20   08 16.48  +26 13.7   5.535   5.111   60.2    9.8    9.3/ 94.7   0.2/287  135 13  19.3  +29/257
09/25 03:20   08 17.17  +26 13.0   5.520   5.110   61.0    9.9    9.2/ 94.6   0.2/287  123 14  19.3  +30/257
09/26 03:20   08 17.84  +26 12.2   5.506   5.110   61.8   10.0    9.1/ 94.4   0.2/287  111 15  19.3  +31/258
09/27 03:20   08 18.52  +26 11.5   5.492   5.110   62.7   10.0    8.9/ 94.3   0.2/286   98 16  19.3  +31/258
09/28 03:20   08 19.18  +26 10.9   5.477   5.109   63.5   10.1    8.8/ 94.1   0.2/286   86 17  19.3  +32/259
09/29 03:10   08 19.83  +26 10.2   5.463   5.109   64.3   10.2    8.7/ 94.0   0.2/286   73 18  19.3  +31/258
09/30 03:10   08 20.47  +26 09.6   5.448   5.108   65.2   10.2    8.6/ 93.8   0.2/286   60 19  19.3  +31/258
10/01 03:10   08 21.11  +26 09.0   5.433   5.108   66.0   10.3    8.5/ 93.6   0.2/286   46 20  19.3  +32/259
10/02 03:10   08 21.74  +26 08.5   5.418   5.108   66.8   10.4    8.4/ 93.4   0.2/286   33 21  19.3  +33/259
10/03 03:10   08 22.36  +26 08.0   5.403   5.107   67.7   10.4    8.2/ 93.2   0.2/286   19 22  19.3  +33/259
10/04 03:10   08 22.97  +26 07.5   5.388   5.107   68.5   10.5    8.1/ 93.0   0.2/286    8 24  19.3  +34/260
10/05 03:10   08 23.57  +26 07.1   5.373   5.106   69.4   10.6    8.0/ 92.8   0.2/286   12 25  19.3  +35/260
10/06 03:10   08 24.17  +26 06.7   5.357   5.106   70.2   10.6    7.9/ 92.6   0.2/286   25 26  19.3  +35/261
10/07 03:00   08 24.74  +26 06.3   5.342   5.106   71.0   10.7    7.7/ 92.3   0.2/286   39 27  19.3  +34/260
10/08 03:00   08 25.32  +26 06.0   5.327   5.105   71.9   10.7    7.6/ 92.1   0.2/286   53 28  19.3  +35/260
10/09 03:00   08 25.88  +26 05.7   5.311   5.105   72.8   10.8    7.5/ 91.8   0.2/286   67 29  19.2  +35/261
inserted by FC2 system