123P/West-Hartley 
   From 2217 observations 1989 Mar. 14-2018 Oct. 12.(5) Kinoshita
   Epoch = 2019 Mar. 18.0 TT = JDT 2458560.5 
       T = 2019 Feb. 5.12139 TT             peri.= 103.01261 
       e = 0.4486146                        node =  46.49926 (2000.0) 
       q = 2.1268856 AU                     incl.=  15.35961 
   a = 3.8573481 AU          n = 0.13009806         P = 7.58 years 
  m1 = 6.0 + 5log(delta) + 20.0log(r) 
  A. Node = E:11/09.6 JST  O:2018/01/11.7 JST  3.427 AU 
  D. Node = E:05/08.0 JST  O:2019/10/09.0 JST  2.798 AU 

2019   JST     R.A. (2000) D.C.    Delta     r    Elong. Phase   dMo./P.A.   Tail/P.A. M-O Ag   m1     H/A
02/16 00:40   11 35.94  +31 29.8   1.215   2.129  150.1   13.4    8.1/297.2   1.0/237   73 10  13.0  +74/278
02/17 00:30   11 35.38  +31 33.5   1.212   2.129  150.6   13.2    8.3/294.8   1.0/235   60 11  13.0  +73/276
02/18 00:30   11 34.79  +31 37.0   1.210   2.129  151.1   13.0    8.5/292.5   1.0/233   47 12  13.0  +74/277
02/19 00:30   11 34.17  +31 40.2   1.208   2.130  151.5   12.8    8.7/290.3   1.0/230   35 14  13.0  +75/278
02/20 00:20   11 33.54  +31 43.2   1.206   2.130  151.9   12.6    8.9/288.1   1.0/228   25 15  13.0  +74/276
02/21 00:20   11 32.87  +31 46.0   1.205   2.130  152.3   12.4    9.1/286.0   0.9/226   23 16  13.0  +75/277
02/22 00:20   11 32.18  +31 48.5   1.203   2.131  152.7   12.3    9.3/284.0   0.9/223   29 17  13.0  +76/278
02/23 00:20   11 31.47  +31 50.8   1.202   2.131  153.0   12.2    9.5/282.0   0.9/221   40 18  13.0  +77/280
02/24 00:10   11 30.75  +31 52.7   1.201   2.132  153.3   12.0    9.7/280.1   0.9/218   52 19  13.0  +76/278
02/25 00:10   11 30.00  +31 54.4   1.200   2.132  153.5   11.9    9.8/278.2   0.9/216   64 20  13.0  +77/279
02/26 00:10   11 29.24  +31 55.8   1.200   2.133  153.7   11.9   10.0/276.3   0.9/213   77 21  13.0  +78/280
02/28 00:00   11 27.67  +31 57.6   1.200   2.134  154.0   11.7   10.3/272.6   0.9/208  100 23  13.0  +78/280
03/01 00:00   11 26.86  +31 58.1   1.200   2.135  154.1   11.7   10.4/270.8   0.9/205  112 24  13.0  +79/282
03/02 00:00   11 26.04  +31 58.2   1.200   2.136  154.1   11.7   10.6/268.9   0.9/202  123 25  13.0  +79/283
03/02 23:50   11 25.22  +31 58.0   1.201   2.136  154.1   11.7   10.7/267.1   0.9/199  133 26  13.0  +78/281
03/03 23:50   11 24.38  +31 57.5   1.201   2.137  154.0   11.7   10.8/265.3   0.9/197  143 27  13.0  +79/283
03/04 23:50   11 23.54  +31 56.6   1.202   2.138  153.9   11.8   10.9/263.5   0.9/194  152 28  13.0  +80/285
03/05 23:50   11 22.69  +31 55.4   1.204   2.139  153.8   11.8   11.0/261.7   0.9/191  157 28  13.0  +81/288
03/06 23:40   11 21.84  +31 53.8   1.205   2.140  153.6   11.9   11.0/259.9   0.9/189  157  0  13.0  +80/285
03/07 23:40   11 20.99  +31 51.8   1.207   2.140  153.4   12.0   11.1/258.0   0.9/186  152  1  13.0  +81/288
03/08 23:40   11 20.14  +31 49.5   1.209   2.141  153.1   12.1   11.2/256.2   0.9/183  144  2  13.0  +82/291
03/09 23:30   11 19.30  +31 46.9   1.211   2.142  152.8   12.2   11.2/254.4   0.9/181  133  3  13.0  +81/288
03/10 23:30   11 18.45  +31 43.8   1.213   2.143  152.4   12.4   11.3/252.5   0.9/178  122  4  13.0  +82/291
03/11 00:50   11 18.40  +31 43.7   1.213   2.143  152.4   12.4   11.3/252.4   0.9/178  122  4  13.0  +80/ 74
03/12 00:40   11 17.57  +31 40.3   1.216   2.144  152.0   12.5   11.3/250.5   0.9/176  110  5  13.0  +81/ 71
03/13 00:40   11 16.74  +31 36.5   1.218   2.145  151.6   12.7   11.3/248.6   1.0/174   98  6  13.1  +80/ 73
03/14 00:40   11 15.91  +31 32.3   1.221   2.146  151.2   12.9   11.4/246.7   1.0/171   86  7  13.1  +79/ 75
03/15 00:40   11 15.10  +31 27.8   1.225   2.147  150.7   13.1   11.4/244.7   1.0/169   73  8  13.1  +78/ 76
03/16 00:40   11 14.29  +31 23.0   1.228   2.148  150.2   13.3   11.4/242.8   1.0/167   60  9  13.1  +77/ 78
inserted by FC2 system