123P/West-Hartley From 2217 observations 1989 Mar. 14-2018 Oct. 12.(5) Kinoshita Epoch = 2020 Feb. 1.0 TT = JDT 2458880.5 T = 2019 Feb. 5.31220 TT peri.= 103.09416 e = 0.4487689 node = 46.49606 (2000.0) q = 2.1278453 AU incl.= 15.35445 a = 3.8601693 AU n = 0.12995546 P = 7.58 years m1 = 6.0 + 5log(delta) + 20.0log(r) A. Node = E:11/09.9 JST O:2018/01/11.1 JST 3.432 AU D. Node = E:05/07.2 JST O:2019/10/09.0 JST 2.798 AU 2020 JST R.A. (2000) D.C. Delta r Elong. Phase dMo./P.A. Tail/P.A. M-O Ag m1 H/A 01/12 06:00 16 51.41 -26 24.8 3.953 3.214 36.3 10.4 19.5/104.5 0.3/271 130 16 19.1 +11/314 01/13 06:00 16 52.82 -26 29.6 3.949 3.219 37.0 10.6 19.4/104.5 0.3/271 115 17 19.1 +12/315 01/14 06:00 16 54.22 -26 34.5 3.944 3.223 37.7 10.8 19.3/104.4 0.3/271 101 18 19.1 +12/315 01/15 05:50 16 55.61 -26 39.2 3.940 3.228 38.4 10.9 19.2/104.4 0.3/271 87 19 19.2 +11/314 01/16 05:50 16 57.00 -26 44.0 3.935 3.232 39.1 11.1 19.1/104.3 0.3/271 73 20 19.2 +11/314 01/17 05:50 16 58.38 -26 48.7 3.930 3.236 39.8 11.2 19.0/104.3 0.3/271 60 21 19.2 +12/315 01/18 05:50 16 59.76 -26 53.3 3.925 3.241 40.5 11.4 18.9/104.2 0.3/271 46 22 19.2 +12/315 01/19 05:50 17 01.13 -26 57.9 3.919 3.245 41.2 11.5 18.8/104.2 0.3/271 33 23 19.2 +12/316 01/20 05:50 17 02.49 -27 02.5 3.914 3.249 42.0 11.7 18.6/104.2 0.3/271 20 24 19.2 +13/316 01/21 05:50 17 03.84 -27 07.1 3.908 3.254 42.7 11.8 18.5/104.1 0.3/271 8 26 19.2 +13/317 01/22 05:50 17 05.19 -27 11.6 3.903 3.258 43.4 12.0 18.4/104.1 0.3/271 10 27 19.2 +13/317 01/23 05:40 17 06.52 -27 16.0 3.897 3.262 44.1 12.1 18.3/104.1 0.3/271 21 27 19.2 +12/316 01/24 05:40 17 07.85 -27 20.4 3.891 3.267 44.8 12.3 18.2/104.1 0.3/271 33 28 19.2 +12/317 01/25 05:40 17 09.18 -27 24.8 3.885 3.271 45.5 12.4 18.0/104.1 0.3/271 45 0 19.2 +13/317 01/26 05:40 17 10.49 -27 29.2 3.878 3.276 46.2 12.5 17.9/104.1 0.3/271 57 1 19.2 +13/318 01/27 05:40 17 11.80 -27 33.5 3.872 3.280 47.0 12.7 17.8/104.0 0.3/270 69 2 19.3 +13/318 01/28 05:40 17 13.09 -27 37.8 3.866 3.284 47.7 12.8 17.7/104.0 0.3/270 81 3 19.3 +14/319 01/29 05:40 17 14.38 -27 42.1 3.859 3.289 48.4 12.9 17.5/104.0 0.3/270 92 4 19.3 +14/319 01/30 05:30 17 15.66 -27 46.3 3.852 3.293 49.1 13.1 17.4/104.1 0.3/270 104 5 19.3 +13/318 01/31 05:30 17 16.93 -27 50.5 3.845 3.297 49.8 13.2 17.2/104.1 0.3/270 115 5 19.3 +13/318 02/01 05:30 17 18.19 -27 54.7 3.838 3.302 50.6 13.3 17.1/104.1 0.3/270 126 6 19.3 +13/319 02/02 05:30 17 19.44 -27 58.8 3.831 3.306 51.3 13.5 17.0/104.1 0.3/270 138 7 19.3 +14/320 02/03 05:30 17 20.69 -28 02.9 3.824 3.310 52.0 13.6 16.8/104.1 0.3/270 150 8 19.3 +14/320 02/04 05:30 17 21.92 -28 07.0 3.817 3.315 52.8 13.7 16.7/104.2 0.3/270 161 9 19.3 +14/321 02/05 05:20 17 23.14 -28 11.0 3.809 3.319 53.5 13.8 16.6/104.2 0.4/270 172 10 19.3 +13/319 02/06 05:20 17 24.35 -28 15.1 3.801 3.323 54.3 13.9 16.4/104.2 0.4/270 170 11 19.3 +14/320 02/07 05:20 17 25.55 -28 19.1 3.794 3.328 55.0 14.0 16.3/104.3 0.4/270 158 12 19.3 +14/320 02/08 05:20 17 26.75 -28 23.1 3.786 3.332 55.7 14.2 16.1/104.3 0.4/270 144 13 19.3 +14/321 02/09 05:20 17 27.93 -28 27.1 3.778 3.336 56.5 14.3 16.0/104.4 0.4/270 130 14 19.4 +15/321 02/10 05:20 17 29.11 -28 31.0 3.770 3.341 57.2 14.4 15.8/104.5 0.4/270 115 15 19.4 +15/322 02/11 05:10 17 30.26 -28 34.9 3.762 3.345 58.0 14.5 15.7/104.5 0.4/270 101 17 19.4 +14/321 02/12 05:10 17 31.41 -28 38.8 3.754 3.349 58.7 14.6 15.5/104.6 0.4/270 86 18 19.4 +14/321