OAA computing section circular NK 586 07S1-0180Periodic Comet Helin-Roman-Crockett 07S1-0120
The following improved orbital elements, 06F1-001 by S. Nakano, 06F1-000 are from 63 observations 1989 Jan. 3 to May 8. Perturbations by all nine planets and five minor planets were taken into account. The mean residual is +/- 1.13 arc seconds. 06F1-001 Epoch = 06F1-000 1988 Aug. 27.0 06F1-001 TT 06F1-000 06F1-001 T = 06F1-000 1988 Sept.13.60267 +/- 0.46991 06F1-001 (m.e.) TT 06F1-000 06F1-001 Peri. = 06F1-000 10.27133 +/- 0.16715 06F1-001 Node = 06F1-000 92.00003 +/- 0.15385 06F1-001 (2000.0) 06F1-000 06F1-001 Inc. = 06F1-000 4.23302 +/- 0.03901 06F1-001 q = 06F1-000 3.4706333 +/- 0.0002535 06F1-001 AU 06F1-000 06F1-001 e = 06F1-000 0.1414370 +/- 0.0000585 06F1-001 a = 06F1-000 4.0423749 +/- 0.0001065 06F1-001 AU 06F1-000 06F1-001 nß = 06F1-000 0.12126883 +/- 0.00000479 06F1-001 P = 06F1-000 8.127 +/- 0.0003213 06F1-001 years 06F1-000 (+/- 0.12 06F1-001 day 06F1-000) The predicted orbit for the 1996 return is as follows: 06F1-001T = 06F1-000 1996 Nov. 1.38894 06F1-001 TT 06F1-000 06F1-001 Epoch = 06F1-000 1996 Nov. 13.0 06F1-001 TT 06F1-000 06F1-001Peri. = 06F1-000 10.18992 06F1-001 e = 06F1-000 0.1387402 06F1-001Node = 06F1-000 91.98152 06F1-001 (2000.0) a = 06F1-000 4.0518814 06F1-001 AU 06F1-000 06F1-001Inc. = 06F1-000 4.23015 06F1-001nß= 06F1-000 0.12084230 06F1-001 q = 06F1-000 3.4897225 06F1-001 AU P = 06F1-000 8.156 06F1-001 years 06F1-000 The following residuals in seconds of arc are from the above orbital elements: 06F1-001Date/ UT R.A. (2000) Decl. *** O-C *** Code/Obs 06F1-000 06F1-001 h m s ¡ , " " " 06F1-000 1989 01 02.43247 08 40 23.93 +21 09 20.2 ( 5.5+ 0.9+) 675/PL 1989 01 03.43733 08 39 49.92 +21 12 42.2 0.1- 1.7+ 675/PL 1989 01 03.46354 08 39 49.07 +21 12 46.0 0.9+ 0.3+ 675/PL 1989 01 04.97639 08 38 56.90 +21 17 52.1 0.3- 0.4+ 010/IC 1989 01 06.27020 08 38 10.77 +21 22 17.4 1.4+ 0.3+ 801/HO 1989 01 07.37986 08 37 30.17 +21 26 08.3 1.5+ 1.3+ 675/PL 1989 01 08.64236 08 36 42.55 +21 30 26.0 ( 3.5- 3.5-) 372/sk 1989 01 09.62014 08 36 05.37 +21 33 52.9 0.3- 0.3- 400/KM 1989 01 09.63889 08 36 04.77 +21 33 57.8 1.7+ 0.6+ 400/KM 1989 01 11.22175 08 35 02.96 +21 39 29.0 1.7+ 0.3- 801/HO 1989 01 12.71354 08 34 03.08 +21 44 42.6 1.2- 0.9- 372/sk 1989 01 12.72535 08 34 02.66 +21 44 45.5 0.2- 0.4- 372/sk 1989 01 13.61597 08 33 26.65 +21 47 53.8 0.2+ 1.1+ 400/KM 1989 01 13.63200 08 33 25.92 +21 47 55.1 0.6- 0.9- 400/KM 1989 01 14.28333 08 32 59.27 +21 50 13.3 0.4+ 0.2+ 293/h3 1989 01 15.47917 08 32 09.70 +21 54 25.5 0.0 1.4+ 674/FD 1989 01 16.73032 08 31 17.27 +21 58 46.0 1.8- 0.3+ 897/kj 1989 01 16.75619 08 31 16.15 +21 58 51.6 1.8- 0.6+ 897/kj 1989 01 25.79671 08 24 47.93 +22 29 19.1 1.8+ 0.1- 046/KL 1989 01 25.81083 08 24 47.30 +22 29 22.0 1.7+ 0.0 046/KL 06F1-001 07S1-0120 - continued - 06F1-000 06F1-001 07S1-0180P/Helin-Roman-Crockett NK 586 - 2 06F1-000 07S1-0120 ------------------------------------------------------------------------- 06F1-001Date/ UT R.A. (2000) Decl. *** O-C *** Code/Obs 06F1-000 06F1-001 h m s ¡ , " " " 06F1-000 1989 01 26.82141 08 24 03.38 +22 32 35.5 0.4- 0.9- 046/KL 1989 01 26.83553 08 24 02.71 +22 32 39.4 1.1- 0.2+ 046/KL 1989 01 27.60231 08 23 29.59 +22 35 07.6 0.6+ 1.8+ 887/nj 1989 01 27.61076 08 23 29.10 +22 35 07.5 1.0- 0.1+ 887/nj 1989 01 27.62141 08 23 28.72 +22 35 07.9 0.3+ 1.5- 887/nj 1989 01 27.63087 08 23 28.33 +22 35 10.7 0.7+ 0.5- 887/nj 1989 01 27.80961 08 23 20.66 +22 35 41.7 0.9- 2.2- 046/KL 1989 01 27.82245 08 23 20.14 +22 35 45.2 0.4- 1.1- 046/KL 1989 01 28.55469 08 22 48.40 +22 38 04.8 2.3- 0.3+ 897/kj 1989 01 28.56944 08 22 47.79 +22 38 08.3 1.8- 1.1+ 405/KC 1989 01 28.57917 08 22 46.97 +22 38 09.5 ( 7.2- 0.4+) 405/KC 1989 01 28.58715 08 22 46.80 +22 38 10.6 ( 4.6- 0.1+) 405/KC 1989 01 28.59201 08 22 46.84 +22 38 10.0 1.1- 1.5- 897/kj 1989 01 29.51181 08 22 07.38 +22 41 04.5 ( 2.0- 3.6+) 400/KM 1989 01 29.52639 08 22 06.90 +22 41 04.9 0.2+ 1.2+ 400/KM 1989 01 29.53889 08 22 06.42 +22 41 06.1 1.2+ 0.1+ 400/KM 1989 01 29.54392 08 22 06.10 +22 41 04.5 0.5- 2.8- 405/KC 1989 01 29.59861 08 22 03.85 +22 41 18.1 1.7+ 0.7+ 405/KC 1989 01 30.54514 08 21 23.37 +22 44 10.0 0.1- 1.0+ 400/KM 1989 01 30.56042 08 21 22.68 +22 44 11.9 0.4- 0.1+ 400/KM 1989 01 31.84236 08 20 28.78 +22 47 57.8 ( 4.2+ 2.0-) 046/KL 1989 02 01.70156 08 19 52.11 +22 50 28.5 0.7- 2.1- 405/KC 1989 02 01.71146 08 19 51.82 +22 50 31.8 1.1+ 0.4- 405/KC 1989 02 01.81053 08 19 47.55 +22 50 52.2 ( 4.2- 3.5+) 046/KL 1989 02 01.82459 08 19 46.92 +22 50 56.6 ( 4.6- 5.5+) 046/KL 1989 02 03.51601 08 18 37.33 +22 55 42.0 ( 3.5+ 3.2+) 400/KM 1989 02 03.53128 08 18 36.72 +22 55 44.4 ( 4.0+ 3.0+) 400/KM 1989 02 04.20491 08 18 08.74 +22 57 32.3 0.4- 0.7- 801/HO 1989 02 06.27160 08 16 45.72 +23 03 01.6 0.7+ 2.3- 657/VC 1989 02 06.31257 08 16 44.29 +23 03 11.9 ( 4.0+ 1.6+) 657/VC 1989 02 06.41528 08 16 39.71 +23 03 28.9 1.1- 2.1+ 675/PL 1989 02 06.44838 08 16 38.41 +23 03 32.1 0.6- 0.3+ 675/PL 1989 02 06.54039 08 16 34.96 +23 03 45.5 1.0- 0.9- 897/kj 1989 02 06.57083 08 16 33.64 +23 03 50.8 2.1- 0.4- 897/kj 1989 02 07.32368 08 16 04.11 +23 05 45.6 1.1- 0.5- 657/VC 1989 02 08.23268 08 15 28.96 +23 08 03.2 0.9+ 0.4+ 801/HO 1989 02 11.22760 08 13 37.00 +23 15 09.9 0.8+ 1.5+ 675/PL 1989 02 11.26493 08 13 35.58 +23 15 14.2 0.6+ 0.7+ 675/PL 1989 02 25.77433 08 06 25.18 +23 39 57.7 0.9+ 0.3- 046/KL 1989 02 25.78839 08 06 24.86 +23 39 59.4 0.9+ 0.4+ 046/KL 1989 03 01.24375 08 05 14.98 +23 43 30.6 0.4+ 0.1- 675/PL 1989 03 03.08475 08 04 43.62 +23 45 01.7 0.9+ 1.5+ 801/HO 1989 03 05.17847 08 04 12.93 +23 46 23.4 1.7+ 1.1- 675/PL 1989 03 05.85348 08 04 04.06 +23 46 46.5 1.1+ 0.0 046/KL 1989 03 05.86870 08 04 03.94 +23 46 46.9 2.3+ 0.1- 046/KL 1989 03 08.50984 08 03 34.72 +23 47 57.2 2.4- 0.0 897/kj 1989 03 10.05593 08 03 21.99 +23 48 23.6 1.1- 0.3+ 801/HO 1989 03 10.49479 08 03 19.05 +23 48 28.9 1.3+ 0.4- 373/ts 1989 03 10.50573 08 03 18.83 +23 48 29.6 0.5- 0.1+ 373/ts 1989 03 29.50444 08 04 53.36 +23 39 56.2 ( 4.3+ 2.1+) 373/ts 06F1-001 07S1-0120 - continued - 06F1-000 06F1-001 07S1-0180P/Helin-Roman-Crockett NK 586 - 3 06F1-000 07S1-0120 ------------------------------------------------------------------------- 06F1-001Date/ UT R.A. (2000) Decl. *** O-C *** Code/Obs 06F1-000 06F1-001 h m s ¡ , " " " 06F1-000 1989 03 29.51638 08 04 53.61 +23 39 53.3 ( 5.2+ 0.0 ) 373/ts 1989 04 03.02006 08 06 18.30 +23 34 28.7 0.8+ 0.4- 801/HO 1989 04 05.16007 08 07 06.29 +23 31 29.6 2.2- 0.6- 675/PL 1989 04 07.14583 08 07 55.49 +23 28 28.9 1.9- 0.5- 675/PL 1989 04 08.15122 08 08 22.06 +23 26 52.3 0.5- 0.3- 675/PL 1989 05 08.05575 08 28 26.30 +22 13 48.4 2.2+ 2.7+ 801/HO ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1992 Dec. 12 06F