OAA computing section circular NK 558 Comet Shoemaker-Levy (1991d)
The following improved orbital elements, by S. Nakano, are from 103 observations 1991 Jan. 22 to Dec. 19. Perturbations by all nine planets and five minor planets were taken into account. The mean residual is +/- 0.72 arc second. Epoch = 1992 Jan. 19.0 TT T = 1991 Dec. 31.18638 +/- 0.00085 (m.e.) TT Peri. = 74.36725 +/- 0.00034 Node = 145.12944 +/- 0.00003 (2000.0) Inc. = 77.28829 +/- 0.00008 q = 2.2649865 +/- 0.0000076 AU e = 0.9934860 +/- 0.0000105 -1 1/a = 0.0028760 +/- 0.0000046 AU The following residuals in seconds of arc are from the above orbital elements: Date/ UT R.A. (2000) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1991 01 13.44844 09 46 58.66 -03 37 12.9 ( 4.0- 2.1-) 675/PL 1991 01 13.46736 09 46 57.98 -03 37 03.2 ( 4.3- 1.7-) 675/PL 1991 01 15.49896 09 45 47.07 -03 19 55.4 ( 2.9- 1.3-) 675/PL 1991 01 15.52326 09 45 46.13 -03 19 45.0 ( 3.7- 3.5-) 675/PL 1991 01 19.65104 09 43 10.63 -02 42 10.4 ( 3.1- 2.0+) 391/ko 1991 01 19.67535 09 43 10.02 -02 41 56.8 ( 2.4+ 1.7+) 391/ko 1991 01 22.42569 09 41 18.05 -02 14 59.1 0.2+ 0.1+ 675/PL 1991 01 22.45469 09 41 16.77 -02 14 42.0 0.4- 0.4- 675/PL 1991 01 28.76094 09 36 38.45 -01 06 48.4 0.4- 0.4+ 413/SS 1991 01 29.64278 09 35 57.38 -00 56 41.6 ( 1.9- 2.5+) 372/sk 1991 01 29.66840 09 35 55.98 -00 56 25.5 ( 4.5- 0.8+) 372/sk 1991 02 07.38836 09 28 46.13 +00 51 38.8 0.7+ 1.0- 675/PL 1991 02 07.55277 09 28 37.75 +00 53 49.4 0.1- 0.5- 372/sk 1991 02 07.56458 09 28 37.14 +00 53 58.9 0.0 0.3- 372/sk 1991 02 07.69514 09 28 30.28 +00 55 43.6 0.2- 0.9+ 402/DY 1991 02 07.70556 09 28 29.73 +00 55 53.6 ( 0.3- 2.6+) 402/DY 1991 02 08.37725 09 27 55.16 +01 04 45.7 0.9+ 0.7- 675/PL 1991 02 09.20624 09 27 12.10 +01 15 53.2 0.4- 0.3+ 801/HO 1991 02 09.21350 09 27 11.71 +01 15 59.0 0.5- 0.3+ 801/HO 1991 02 12.60509 09 24 13.64 +02 02 33.7 1.1- 0.2+ 897/kj 1991 02 12.64670 09 24 11.66 +02 03 06.3 ( 2.8+ 2.1-) 897/kj 1991 02 13.67014 09 23 17.27 +02 17 30.6 1.0+ 1.0- 391/ko 1991 02 13.68403 09 23 16.50 +02 17 42.4 0.7+ 0.9- 391/ko 1991 02 16.21689 09 21 01.43 +02 53 55.9 ( 3.1- 0.6+) 801/HO 1991 02 16.21689 09 21 01.54 +02 53 55.8 1.5- 0.5+ 801/HO 1991 02 16.21689 09 21 01.65 +02 53 55.6 0.2+ 0.3+ 801/HO 1991 02 16.22971 09 21 00.96 +02 54 06.3 0.3+ 0.1- 801/HO 1991 02 16.89766 09 20 25.66 +03 03 48.0 ( 4.1+ 1.2+) 480/mz 1991 02 17.94943 09 19 29.03 +03 19 07.2 1.9- 0.2- 046/KL 1991 02 17.96367 09 19 28.30 +03 19 18.9 1.3- 1.0- 046/KL - continued - Comet Shoemaker-Levy (1991d) NK 558 - 2 Date/ UT R.A. (2000) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1991 02 18.94479 09 18 36.07 +03 33 44.1 0.8+ 1.0- 046/KL 1991 02 18.95758 09 18 35.26 +03 33 56.2 1.0- 0.3- 046/KL 1991 03 07.85694 09 04 10.04 +07 52 00.3 1.8- 0.1+ 046/KL 1991 03 07.87257 09 04 09.30 +07 52 17.0 ( 1.6- 2.3+) 046/KL 1991 03 09.21753 09 03 06.37 +08 13 02.8 0.0 0.2+ 675/PL 1991 03 09.25069 09 03 04.78 +08 13 33.8 0.2- 0.5+ 675/PL 1991 03 12.79198 09 00 25.05 +09 08 03.2 0.9- 1.1+ 046/KL 1991 03 12.80339 09 00 24.44 +09 08 16.2 ( 2.4- 3.6+) 046/KL 1991 03 13.14067 09 00 09.79 +09 13 23.0 0.3- 0.3+ 801/HO 1991 03 13.78602 08 59 42.03 +09 23 12.5 0.1+ 1.9- 046/KL 1991 03 13.79736 08 59 41.44 +09 23 25.6 1.3- 0.8+ 046/KL 1991 03 14.81061 08 58 58.44 +09 38 50.9 0.1- 0.6- 046/KL 1991 03 14.82051 08 58 58.06 +09 38 58.7 0.6+ 1.9- 046/KL 1991 03 14.85764 08 58 56.41 +09 39 34.7 0.3- 0.2+ 540/LZ 1991 03 14.90000 08 58 54.68 +09 40 12.1 1.0+ 1.0- 540/LZ 1991 03 16.81736 08 57 35.73 +10 09 17.6 0.6- 1.3+ 540/LZ 1991 03 16.86668 08 57 33.77 +10 10 00.6 0.4+ 0.4- 540/LZ 1991 03 17.08203 08 57 25.12 +10 13 16.8 0.1+ 0.7+ 801/HO 1991 03 17.09006 08 57 24.79 +10 13 23.8 0.1+ 0.5+ 801/HO 1991 03 18.51597 08 56 28.65 +10 34 50.4 0.3+ 1.6+ 402/DY 1991 03 18.52503 08 56 28.27 +10 34 57.2 0.0 0.3+ 402/DY 1991 03 21.05697 08 54 53.45 +11 12 35.2 0.0 0.4+ 801/HO 1991 03 21.08726 08 54 52.33 +11 13 01.8 0.1+ 0.2+ 801/HO 1991 03 21.95281 08 54 21.37 +11 25 45.6 0.8+ 0.0 540/LZ 1991 03 21.97902 08 54 20.44 +11 26 09.0 0.9+ 0.4+ 540/LZ 1991 04 03.87012 08 48 16.32 +14 26 31.3 0.0 2.2+ 503/CX 1991 04 05.46818 08 47 44.40 +14 47 31.4 0.1- 0.1+ 413/SS 1991 04 09.83819 08 46 32.81 +15 43 06.8 0.8- 0.4+ 046/KL 1991 04 09.84676 08 46 32.75 +15 43 12.7 0.1+ 0.1- 046/KL 1991 04 10.85162 08 46 19.56 +15 55 40.5 0.1- 1.8+ 046/KL 1991 04 12.07926 08 46 05.20 +16 10 39.5 0.8+ 0.5+ 801/HO 1991 04 12.09230 08 46 05.04 +16 10 49.2 0.7+ 0.7+ 801/HO 1991 04 12.84688 08 45 57.15 +16 19 53.8 1.2+ 1.4- 046/KL 1991 04 12.85538 08 45 57.00 +16 20 00.2 0.3+ 1.2- 046/KL 1991 04 13.82153 08 45 47.90 +16 31 36.3 0.4+ 1.5+ 540/LZ 1991 04 13.84375 08 45 47.68 +16 31 51.1 0.3+ 0.4+ 540/LZ 1991 04 14.19045 08 45 44.72 +16 35 57.4 0.7+ 0.8- 675/PL 1991 04 16.17900 08 45 30.44 +16 59 14.6 0.8+ 0.4- 675/PL 1991 05 03.45903 08 46 46.26 +19 58 56.1 1.1- 0.2+ 372/sk 1991 05 03.49462 08 46 46.81 +19 59 14.9 0.2- 0.7- 372/sk 1991 05 05.86181 08 47 24.26 +20 20 48.2 0.4- 1.0- 540/LZ 1991 05 05.88481 08 47 24.61 +20 21 00.8 0.9- 0.7- 540/LZ 1991 05 11.04176 08 49 07.91 +21 05 39.0 0.5+ 0.2+ 801/HO 1991 05 11.05405 08 49 08.20 +21 05 44.8 0.7+ 0.1- 801/HO 1991 05 12.04425 08 49 31.31 +21 13 57.3 0.5+ 0.1+ 801/HO 1991 05 12.06608 08 49 31.82 +21 14 08.0 0.5+ 0.1+ 801/HO 1991 05 13.16632 08 49 58.81 +21 23 08.2 1.1+ 1.1+ 675/PL 1991 05 13.21146 08 49 59.92 +21 23 28.9 1.1+ 0.1+ 675/PL 1991 05 14.90764 08 50 43.98 +21 37 01.9 0.1+ 0.0 595/FI 1991 05 14.92153 08 50 44.23 +21 37 11.0 ( 1.6- 2.6+) 595/FI - continued - Comet Shoemaker-Levy (1991d) NK 558 - 3 Date/ UT R.A. (2000) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1991 11 04.81343 13 28 02.83 +34 19 35.7 1.8- 1.4- 411/kb 1991 11 04.81525 13 28 03.29 +34 19 37.1 0.1- 0.7- 411/kb 1991 11 04.82138 13 28 04.34 +34 19 40.1 0.4- 0.1+ 411/kb 1991 11 04.82626 13 28 05.24 +34 19 41.9 0.1+ 0.1+ 411/kb 1991 11 10.82883 13 46 04.97 +34 56 14.9 1.4- 0.3- 411/kb 1991 11 10.83017 13 46 05.32 +34 56 15.3 0.1- 0.4- 411/kb 1991 11 10.83112 13 46 05.53 +34 56 15.3 0.4+ 0.7- 411/kb 1991 11 10.83226 13 46 05.75 +34 56 16.6 0.5+ 0.1+ 411/kb 1991 11 20.83665 14 17 54.42 +35 58 47.3 0.2+ 0.9- 411/kb 1991 11 20.83970 14 17 55.06 +35 58 49.0 0.7+ 0.4- 411/kb 1991 11 20.84159 14 17 55.30 +35 58 49.4 0.9- 0.7- 411/kb 1991 12 03.85055 15 02 28.78 +37 18 14.0 0.8+ 0.1+ 411/kb 1991 12 03.85149 15 02 28.93 +37 18 15.2 0.2+ 1.0+ 411/kb 1991 12 03.85330 15 02 29.28 +37 18 14.8 0.2- 0.1- 411/kb 1991 12 03.85422 15 02 29.50 +37 18 16.2 0.1+ 1.0+ 411/kb 1991 12 03.85501 15 02 29.76 +37 18 15.7 1.2+ 0.2+ 411/kb 1991 12 03.85557 15 02 29.82 +37 18 15.4 0.5+ 0.3- 411/kb 1991 12 03.85668 15 02 29.99 +37 18 17.2 0.2- 1.1+ 411/kb 1991 12 06.85468 15 13 12.43 +37 35 30.9 1.2- 0.2+ 411/kb 1991 12 06.85568 15 13 12.70 +37 35 30.3 0.5- 0.7- 411/kb 1991 12 06.85753 15 13 13.07 +37 35 31.1 0.8- 0.5- 411/kb 1991 12 06.85847 15 13 13.45 +37 35 31.1 1.3+ 0.9- 411/kb 1991 12 06.86146 15 13 13.98 +37 35 33.3 0.1- 0.3+ 411/kb 1991 12 15.85315 15 46 04.01 +38 23 11.2 0.4+ 0.8- 411/kb 1991 12 15.85806 15 46 05.17 +38 23 14.0 1.2+ 0.5+ 411/kb 1991 12 15.86014 15 46 05.46 +38 23 14.6 0.8- 0.4+ 411/kb 1991 12 18.81422 15 57 02.72 +38 37 15.3 0.3+ 0.9+ 411/kb 1991 12 18.81601 15 57 03.09 +38 37 15.4 0.0 0.5+ 411/kb 1991 12 18.81694 15 57 03.27 +38 37 15.6 0.3- 0.4+ 411/kb 1991 12 18.81785 15 57 03.52 +38 37 15.6 0.2+ 0.2+ 411/kb 1991 12 18.81973 15 57 03.91 +38 37 16.8 0.1- 0.8+ 411/kb 1991 12 18.82063 15 57 04.11 +38 37 17.1 0.1- 0.9+ 411/kb 1991 12 19.85714 16 00 55.39 +38 41 58.3 0.0 0.1- 411/kb 1991 12 19.85810 16 00 55.63 +38 41 58.3 0.3+ 0.3- 411/kb 1991 12 19.85992 16 00 56.02 +38 41 59.0 0.2+ 0.1- 411/kb 1991 12 19.86083 16 00 56.23 +38 41 58.8 0.3+ 0.6- 411/kb 1991 12 19.86255 16 00 56.59 +38 41 59.7 0.0 0.2- 411/kb 1991 12 19.86435 16 00 57.01 +38 42 00.5 0.2+ 0.1+ 411/kb ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1991 December 24