117P/Helin-Roman-Alu 
   From 4119 observations 1988 Aug. 12-2018 Mar. 10. Kinoshita
   Epoch = 2019 Nov. 13.0 TT = JDT 2458800.5 
       T = 2022 July 6.50714 TT             peri.= 222.62959 
       e = 0.2556535                        node =  58.86573 (2000.0) 
       q = 3.0432354 AU                     incl.=   8.70112 
   a = 4.0884661 AU          n = 0.11922394         P = 8.27 years 
  m1 = 5.0 + 5log(delta) + 15.0log(r) 
  A. Node = E:11/22.1 JST  O:2025/02/20.7 JST  4.707 AU 
  D. Node = E:05/20.8 JST  O:2021/12/06.1 JST  3.216 AU 

2019   JST     R.A. (2000) D.C.    Delta     r    Elong. Phase   dMo./P.A.   Tail/P.A. M-O Ag   m1     H/A
11/03 03:40   10 34.99  +17 40.3   5.043   4.732   66.3   11.1    9.6/103.2   0.2/296  137  6  18.6  +33/271
11/04 03:40   10 35.64  +17 38.1   5.027   4.730   67.1   11.1    9.5/103.0   0.2/295  149  7  18.6  +34/271
11/05 03:40   10 36.29  +17 35.9   5.011   4.729   67.9   11.2    9.4/102.8   0.2/295  161  8  18.6  +34/272
11/06 03:40   10 36.93  +17 33.8   4.995   4.727   68.8   11.3    9.3/102.6   0.2/295  172  9  18.6  +35/272
11/07 03:30   10 37.56  +17 31.8   4.979   4.726   69.6   11.3    9.1/102.3   0.2/295  174  9  18.6  +34/271
11/08 03:30   10 38.19  +17 29.9   4.963   4.724   70.4   11.4    9.0/102.1   0.2/295  163 10  18.6  +34/272
11/09 03:30   10 38.80  +17 28.0   4.947   4.723   71.3   11.5    8.9/101.9   0.2/295  151 11  18.6  +35/272
11/10 03:30   10 39.41  +17 26.1   4.930   4.722   72.1   11.5    8.7/101.6   0.2/295  140 12  18.6  +36/273
11/11 03:30   10 40.01  +17 24.4   4.914   4.720   73.0   11.6    8.6/101.4   0.2/295  128 13  18.6  +36/273
11/12 03:30   10 40.59  +17 22.7   4.897   4.718   73.8   11.6    8.5/101.1   0.2/295  116 14  18.6  +37/274
11/13 03:30   10 41.18  +17 21.0   4.881   4.717   74.7   11.7    8.3/100.8   0.2/295  103 15  18.5  +38/275
11/14 03:30   10 41.75  +17 19.5   4.864   4.715   75.6   11.7    8.2/100.5   0.2/294   91 16  18.5  +38/275
11/15 03:30   10 42.31  +17 18.0   4.847   4.714   76.4   11.8    8.0/100.2   0.2/294   78 17  18.5  +39/276
11/16 03:20   10 42.86  +17 16.5   4.830   4.712   77.3   11.8    7.9/ 99.9   0.2/294   65 18  18.5  +38/275
11/17 03:20   10 43.40  +17 15.2   4.814   4.711   78.2   11.9    7.8/ 99.6   0.2/294   52 19  18.5  +38/275
11/18 03:20   10 43.93  +17 13.9   4.797   4.709   79.0   11.9    7.6/ 99.2   0.2/294   38 20  18.5  +39/276
11/19 03:20   10 44.46  +17 12.7   4.780   4.708   79.9   11.9    7.5/ 98.8   0.2/294   25 21  18.5  +40/276
11/20 03:20   10 44.97  +17 11.5   4.763   4.706   80.8   12.0    7.3/ 98.5   0.2/294   12 22  18.5  +40/277
11/21 03:20   10 45.48  +17 10.4   4.746   4.705   81.7   12.0    7.1/ 98.0   0.2/294    5 23  18.5  +41/277
11/22 03:20   10 45.97  +17 09.4   4.729   4.703   82.5   12.0    7.0/ 97.6   0.2/294   18 24  18.5  +42/278
11/23 03:20   10 46.45  +17 08.5   4.711   4.702   83.4   12.0    6.8/ 97.1   0.2/293   32 25  18.4  +42/279
11/24 03:10   10 46.92  +17 07.7   4.694   4.700   84.3   12.1    6.7/ 96.6   0.2/293   46 26  18.4  +41/278
11/25 03:10   10 47.38  +17 06.9   4.677   4.699   85.2   12.1    6.5/ 96.1   0.3/293   60 27  18.4  +42/278
11/26 03:10   10 47.84  +17 06.2   4.660   4.697   86.1   12.1    6.3/ 95.6   0.3/293   74 28  18.4  +42/279
11/27 03:10   10 48.28  +17 05.6   4.643   4.696   87.0   12.1    6.2/ 95.0   0.3/293   88  0  18.4  +43/279
11/28 03:10   10 48.70  +17 05.1   4.626   4.694   87.9   12.1    6.0/ 94.3   0.3/293  102  1  18.4  +44/280
11/29 03:10   10 49.12  +17 04.6   4.608   4.693   88.8   12.1    5.8/ 93.7   0.3/293  116  2  18.4  +45/281
11/30 03:10   10 49.53  +17 04.2   4.591   4.691   89.7   12.1    5.7/ 93.0   0.3/293  129  3  18.4  +45/281
12/01 03:00   10 49.92  +17 03.9   4.574   4.690   90.6   12.1    5.5/ 92.2   0.3/292  141  4  18.4  +44/280
12/02 03:00   10 50.30  +17 03.7   4.557   4.688   91.5   12.1    5.3/ 91.4   0.3/292  153  5  18.4  +45/281
12/03 03:00   10 50.67  +17 03.6   4.540   4.686   92.5   12.1    5.1/ 90.5   0.3/292  165  6  18.3  +45/281
inserted by FC2 system