OAA computing section circular NK 466 Periodic Comet Hartley-IRAS 1983v
The following improved orbital elements, by S. Nakano, are from 42 observations 1983 November 4 to 1984 June 4. Pertur- bations by all nine planets were taken into account. The mean residual is +/- 1.36 arc seconds: Epoch = 1984 Jan. 21.0 ET T = 1984 Jan. 8.70946 +/- 0.00049 (m.e.) ET Peri. = 47.11405 +/- 0.00031 Node = 0.80053 +/- 0.00025 1950.0 Inc. = 95.72474 +/- 0.00025 q = 1.2824590 +/- 0.0001634 AU e = 0.8339123 +/- 0.0000147 a = 7.7215795 +/- 0.0007078 AU nß = 0.045935120 +/- 0.000006316 P = 21.457 +/- 0.0029504 years (+/- 1.08 days) The extension orbit is from the above orbital elements: T = 1984 Jan. 8.70246 ET Epoch = 1985 May 15.0 ET Peri. = 47.11987 e = 0.8338439 Node = 0.79654 1950.0 a = 7.7195008 AU Inc. = 95.73962 nß= 0.045953675 q = 1.2826420 AU P = 21.448 years m1 = 9.8 (k=15) The following residuals in seconds of arc are from the above orbital elements: Date/ UT R.A. (1950.0) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1983 Nov. 4.46751 21 50 49.75 -21 31 52.1 0.1- 0.5- 413/SS 4.47793 21 50 47.49 -21 31 20.2 1.3- 0.8- 413/SS 23.44265 21 08 27.57 - 7 29 52.4 0.1- 2.1+ 413/SS 23.45654 21 08 26.49 - 7 29 25.2 0.7+ 1.9- 413/SS 27.09552 21 04 00.51 - 5 17 50.6 0.7+ 1.7+ 675/PL 5 28.15905 21 02 51.88 - 4 41 05.1 ( 4.8+ 10.3-) 675/PL 6 30.09167 21 00 56.23 - 3 35 22.7 2.9+ 0.4+ 688/LO 7 30.11264 21 00 55.20 - 3 34 34.7 ( 4.5+ 7.5+) 657/VC 30.12569 21 00 54.10 - 3 34 15.1 0.8+ 0.2- 688/LO Dec. 1.07363 21 00 01.84 - 3 02 53.1 0.9+ 0.9- 657/VC - continued - Periodic Comet Hartley-IRAS NK 466-2 Date/ UT R.A. (1950.0) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1983 Dec. 1.94263 20 59 15.84 - 2 34 28.7 1.4- 0.1+ 801/HO 3.72122 20 57 48.46 - 1 37 29.7 1.6- 2.4+ 046/KL 3.73047 20 57 48.03 - 1 37 18.8 ( 1.3- 4.3-) 046/KL 4.10035 20 57 31.28 - 1 25 33.5 ( 4.1+ 1.5+) 657/VC 4.72932 20 57 02.57 - 1 05 53.0 1.1- 1.0+ 046/KL 4.73849 20 57 02.34 - 1 05 43.2 ( 1.7+ 6.4-) 046/KL 5.12153 20 56 45.36 - 0 53 43.4 0.1+ 1.7- 688/LO 5.13333 20 56 44.90 - 0 53 21.6 1.1+ 1.9- 688/LO 3 7.71140 20 55 00.79 + 0 25 10.4 0.5- 0.6+ 046/KL 7.71823 20 55 00.69 + 0 25 21.8 2.0+ 0.3- 046/KL 8.08576 20 54 46.87 + 0 36 22.8 0.8+ 1.4+ 707/ev 8.43354 20 54 33.81 + 0 46 50.5 ( 3.7- 1.8+) 413/SS 8.44743 20 54 33.81 + 0 47 10.4 ( 3.9+ 3.0-) 413/SS 8.95854 20 54 15.44 + 1 02 13.9 1.4- 0.6+ 801/HO 25.78889 20 48 05.38 + 8 39 34.1 ( 1.5+ 3.4+) 984/ri 29.06354 20 47 31.21 +10 02 25.4 0.7- 0.6- 688/LO 29.08021 20 47 31.26 +10 02 51.9 2.4+ 0.8+ 688/LO 1984 Jan. 1.96111 20 47 02.10 +11 39 52.2 0.2- 0.7+ 801/HO 4.77083 20 46 47.80 +12 49 32.4 2.4+ 2.6- 502/h4 7.95230 20 46 36.66 +14 08 21.6 1.7- 0.1+ 801/HO 9.94993 20 46 32.46 +14 57 49.6 2.1- 0.4- 801/HO Feb. 11.56462 20 47 37.07 +29 31 13.7 0.3+ 0.8- 675/PL 25.95561 20 47 08.86 +37 26 26.7 1.3- 0.5- 168/KO 25.98235 20 47 08.67 +37 27 23.7 1.4- 1.5- 168/KO 26.02193 20 47 08.35 +37 28 49.8 1.9- 1.3- 168/KO 26.06395 20 47 08.04 +37 30 23.4 1.9- 1.1+ 168/KO 27.07240 20 47 00.33 +38 06 57.2 2.3- 0.9+ 114/ZE Mar. 1.65104 20 46 23.57 +40 20 35.7 ( 5.0+ 5.2+) 168/KO 2.05590 20 46 18.23 +40 36 04.3 0.6- 1.7+ 168/KO 2.81007 20 46 08.23 +41 05 09.4 1.9+ 0.4+ 372/sk 3.02185 20 46 05.03 +41 13 22.3 1.7+ 1.1+ 168/KO 4.80312 20 45 36.62 +42 23 24.1 1.7+ 0.3+ 372/sk 11.52803 20 42 53.00 +47 02 20.9 1.1+ 2.1- 675/PL 22.81082 20 32 54.74 +55 41 57.7 0.6- 1.4+ 168/KO 27.93808 20 24 24.28 +59 56 51.4 0.7- 0.6+ 114/ZE 27.95005 20 24 22.73 +59 57 29.6 1.4- 2.2+ 114/ZE 28.77028 20 22 39.74 +60 39 03.0 2.3+ 1.8- 381/ks 29.95090 20 19 57.21 +61 39 11.1 1.9- 0.4- 114/ZE 30.53037 20 18 32.09 +62 08 47.9 ( 2.3+ 3.5-) 657/VC 31.89688 20 14 52.95 +63 18 52.1 2.1+ 1.2- 114/ZE 1984 Apr. 2.90646 20 08 39.39 +65 02 14.4 0.2+ 0.5- 114/ZE 3.86691 20 05 15.68 +65 51 38.3 ( 3.1- 1.1+) 114/ZE June 4.10806 11 45 22.50 +53 37 18.2 1.5- 0.8+ 801/HO ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1984 December 4