OAA computing section circular NK 471 Periodic Comet Taylor 1977 II = 1983u
The following improved orbital elements, by S. Nakano, are from 45 observations 1976 - 1984. Perturbations by all nine Planets were taken into account. The mean residual is +/- 1.92 arc seconds: Epoch = 1984 Jan. 21.0 ET T = 1984 Jan. 6.56838 +/- 0.00621 (m.e.) ET Peri. = 355.60267 +/- 0.00350 Node = 108.18853 +/- 0.00288 1950.0 Inc. = 20.52059 +/- 0.00114 q = 1.9612217 +/- 0.0000073 AU e = 0.4637848 +/- 0.0000020 a = 3.6575275 +/- 0.0000002 AU nß = 0.14090379 +/- 0.00000001 P = 6.995 +/- 0.00000062 years Epoch = 1977 Jan. 17.0 ET T = 1977 Jan. 11.39525 ET Peri. = 355.55735 Node = 108.21082 1950.0 Inc. = 20.54528 q = 1.9507870 AU e = 0.4655288 a = 3.6499387 AU nß = 0.14134346 P = 6.973 years The extension orbit is from the above orbital elements: T = 1984 Jan. 6.44856 ET Epoch = 1985 May 15.0 ET Peri. = 355.56847 e = 0.4635235 Node = 108.18718 1950.0 a = 3.6553867 AU Inc. = 20.52109 nß= 0.14102759 q = 1.9610291 AU P = 6.989 years 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 ¡ , " " " 1976 Nov. 20.16720 6 54 31.46 + 7 26 33.6 2.2- 2.9+ 805/EL 6 23.67500 6 55 12.60 + 7 52 00.0 ( 8.7- 32.3+) 372/sk 23.84645 6 55 14.63 + 7 52 47.6 1.1+ 1.5+ 210/zk 23.96138 6 55 15.13 + 7 53 43.4 1.3- 3.8+ 210/zk 24.30384 6 55 17.88 + 7 56 33.6 1.2- 3.5+ 805/EL 7 25.23021 6 55 23.89 + 8 03 59.7 1.7- 2.5+ 805/EL 6 Dec. 13.26979 6 51 48.69 +11 27 45.4 0.8- 3.7+ 675/kw 14.30434 6 51 18.40 +11 42 52.1 0.1+ 2.2+ 675/kw 1977 Jan. 14.60660 6 29 15.72 +21 10 18.2 ( 2.0- 5.8-) 372/sk 14.62257 6 29 15.18 +21 10 40.8 0.1- 1.4- 372/sk - continued - Periodic Comet Taylor NK 471-2 Date/ UT R.A. (1950.0) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1977 Jan. 23.34653 6 24 31.51 +23 51 11.7 0.5+ 1.8+ 675/sd Feb. 8.53403 6 22 33.16 +28 05 16.8 2.2+ 1.0+ 372/sk 11.18958 6 23 11.93 +28 40 27.8 0.2- 0.4+ 675/kw 11.45243 6 23 16.73 +28 43 49.0 0.8- 0.8- 879/fr 16.09953 6 25 08.00 +29 40 28.8 1.6- 0.9- 801/sw Mar. 11.24097 6 46 18.16 +33 00 07.1 0.5- 1.9+ 675/kw 12.48993 6 47 56.20 +33 07 10.8 1.2- 1.0- 879/fr 12.50069 6 47 57.17 +33 07 16.2 0.6+ 0.8+ 879/fr 14.53958 6 50 42.50 +33 18 06.9 0.6- 1.7+ 879/fr 22.09994 7 01 51.59 +33 50 14.8 0.7- 0.0 801/HO Apr. 14.04760 7 42 25.99 +34 16 30.5 0.9- 1.6+ 801/HO 16.04983 7 46 18.78 +34 14 05.1 1.6+ 2.4+ 801/HO 16.07706 7 46 21.67 +34 14 02.1 1.6- 1.9+ 801/HO 1983 Nov. 3.40347 6 58 20.23 + 7 24 09.0 1.2- 3.9- 707/ev 7.42743 7 01 40.72 + 7 36 53.6 4.2- 1.8- 707/ev 11.53405 7 04 39.68 + 7 53 10.3 0.3- 3.2- 675/PL 30.36367 7 12 02.67 +10 03 34.8 0.9- 2.2- 801/HO Dec. 1.35546 7 12 07.43 +10 13 27.3 0.8+ 2.0- 801/HO 2.36458 7 12 10.24 +10 23 51.3 0.7- 1.7- 707/ev 1984 Jan. 2.24722 6 59 12.19 +18 19 56.7 0.7+ 2.0- 707/ev 3.25455 6 58 26.80 +18 39 16.6 0.7- 1.0- 801/HO 4.55174 6 57 28.70 +19 04 19.0 1.3- 0.2- 372/sk Y 5.25069 6 56 57.09 +19 17 50.3 0.5+ 0.2- 688/LO 5.28125 6 56 55.60 +19 18 24.6 0.4+ 1.5- 688/LO 5.61736 6 56 40.20 +19 24 59.0 0.8- 1.8+ 372/sk Y 8.17778 6 54 44.32 +20 14 38.8 1.4+ 1.5- 688/LO 8.22361 6 54 42.01 +20 15 30.5 0.2- 3.7- 688/LO 8.23889 6 54 41.34 +20 15 48.8 0.8+ 3.3- 688/LO 8.28472 6 54 39.14 +20 16 48.5 1.1+ 2.7+ 688/LO 26.15000 6 43 12.69 +25 48 42.6 2.8+ 2.8+ 688/LO 4 26.21042 6 43 11.16 +25 49 38.8 6.4+ 3.0- 688/LO 4 29.22848 6 41 58.54 +26 39 48.8 0.6+ 1.4+ 707/ev Feb. 8.14115 6 40 16.11 +29 06 55.9 1.9+ 0.2- 801/HO 3 10.21183 6 40 23.08 +29 34 07.6 0.2- 0.9- 675/PL Mar. 5.07457 6 53 41.19 +33 20 33.4 0.8+ 0.6- 801/HO 27.06237 7 22 20.39 +34 44 59.7 0.9- 1.4- 801/HO May 3.06366 8 29 41.12 +33 37 18.9 4.8- 0.1- 801/HO 7 ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1984 December 5