OAA computing section circular NK 469 Comet Austin 1984i
The following improved orbital elements, by S. Nakano, are from 41 observations 1984 July 8 to 1984 Octover 29. Pertur- bations by Mercury to Pluto were taken into account. The mean residual is +/- 1.38 arc seconds: Epoch = 1984 Aug. 8.0 ET T = 1984 Aug. 12.13728 +/- 0.00005 (m.e.) ET Peri. = 353.12762 +/- 0.00039 Node = 170.87776 +/- 0.00039 1950.0 Inc. = 164.15975 +/- 0.00007 q = 0.2912831 +/- 0.0000004 AU e = 0.9998416 +/- 0.0000020 1/a = +0.0005439 +/- 0.0000069 1/AU The extension orbit is from the above orbital elements: Epoch = 1985 May 15.0 ET T = 1984 Aug. 12.13768 ET Peri. = 353.12583 e = 0.9998174 Node = 170.88667 1950.0 q = 0.2911582 AU Inc. = 164.15724 m1 = 10.4 (k=10) 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 ¡ , " " " 1984 July 8.78260 4 53 21.1 -38 44 26 ( 0.3- 17.8+) 474/JN Y 8.79650 4 54 00.1 -38 43 58 (47.8+ 13.9+) 474/JN Y 8.82812 4 55 16.73 -38 42 40.8 ( 2.1+ 7.1+) 323/PR 8.83854 4 55 42.81 -38 42 21.6 0.2- 1.2+ 323/PR 8.88472 4 57 39.81 -38 40 28.7 ( 6.3+ 2.0-) 323/PR 8.89358 4 58 01.49 -38 40 03.3 1.4- 0.2+ 323/PR 9.76713 5 34 55.34 -37 37 14.8 ( 5.0+ 5.1+) 474/JN 3 9.79896 5 36 14.95 -37 34 14.6 0.3+ 0.2- 474/JN 9.87014 5 39 14.63 -37 26 58.2 0.5+ 0.2+ 323/PR 10.76493 6 15 44.47 -35 32 54.6 ( 4.9+ 1.3+) 474/JN - continued - Comet Austin (1984i) NK 469-2 Date/ UT R.A. (1950.0) Decl. *** O-C *** Code/Obs. h m s ¡ , " " " 1984 July 10.77778 6 16 14.62 -35 30 58.6 2.6+ 2.9+ 474/JN 10.79479 6 16 54.51 -35 28 31.6 0.2+ 2.2- 474/JN 12.75938 7 25 23.51 -29 32 02.8 1.6- 3.1- 474/JN 12.80139 7 26 39.06 -29 23 38.7 1.2+ 0.9+ 474/JN 17.28299 8 57 50.10 -15 56 08.8 0.2- 0.2+ 474/JN 4 17.28785 8 57 53.89 -15 55 25.8 0.5- 0.6+ 474/JN 17.29861 8 58 02.13 -15 53 53.4 3.3- 1.2- 474/JN 4 20.45243 9 29 52.06 - 9 30 02.6 0.3+ 0.6- 323/PR 20.45885 9 29 55.00 - 9 29 21.9 0.2+ 1.1+ 323/PR 20.46655 9 29 58.46 - 9 28 37.5 0.9- 1.3- 323/PR 21.46377 9 37 02.94 - 7 53 11.0 1.0+ 1.3+ 323/PR 21.70856 9 38 37.44 - 7 31 16.3 1.5+ 0.6+ 051/CC 21.71273 9 38 38.94 - 7 30 54.0 0.4+ 0.8+ 051/CC 23.46007 9 48 18.20 - 5 09 02.3 1.6+ 0.7- 323/PR 24.44149 9 52 41.58 - 3 58 44.6 0.5+ 0.1- 323/PR 25.27500 9 55 56.10 - 3 03 18.2 0.4- 0.5- 474/JN 25.27882 9 55 56.95 - 3 03 03.9 0.1- 1.0- 474/JN 26.28119 9 59 19.18 - 2 00 47.8 0.2- 1.2+ 474/JN 26.28218 9 59 19.39 - 2 00 45.3 0.2+ 0.1+ 474/JN 26.45104 9 59 50.23 - 1 50 44.1 0.5+ 0.7- 323/PR 26.45868 9 59 51.63 - 1 50 17.9 0.9+ 1.7- 323/PR 27.44688 10 02 35.85 - 0 53 26.8 0.5- 0.0 323/PR 31.43576 10 09 29.75 + 2 30 37.4 0.8- 0.4+ 323/PR 31.44167 10 09 30.10 + 2 30 52.9 0.7- 1.1- 323/PR Sept. 4.81267 8 54 25.55 +26 38 57.0 1.3- 0.5- 372/sk 17.36340 8 23 26.44 +32 54 19.3 2.2+ 2.6+ 801/HO 27.49385 7 47 24.50 +38 45 19.0 0.0 1.7- 657/VC 29.42708 7 38 21.06 +39 58 07.4 2.3- 1.4- 657/VC 30.01863 7 35 23.74 +40 20 41.4 0.5- 0.7+ 046/KL 30.02251 7 35 22.44 +40 20 49.5 1.9- 0.2- 046/KL 30.48542 7 32 59.46 +40 38 33.7 2.3- 0.3- 657/VC Oct. 1.01678 7 30 11.68 +40 58 53.5 3.1+ 1.6- 046/KL 2.49549 7 21 57.06 +41 55 47.9 ( 4.3+ 4.6-) 657/VC 5.45625 7 03 19.19 +43 49 10.3 1.1- 0.7- 657/VC 7.44931 6 49 00.32 +45 03 03.0 0.2- 3.5- 707/ev 26.16771 3 33 24.69 +47 45 40.2 (17.9- 6.2-) 707/ev 29.92569 2 55 24.65 +45 26 50.1 0.3+ 2.3+ 567/CI 29.93681 2 55 18.49 +45 26 21.0 1.7+ 1.5+ 567/CI 29.94687 2 55 12.32 +45 25 54.9 3.4- 1.0+ 567/CI 29.95590 2 55 06.94 +45 25 29.9 ( 6.3- 1.0-) 567/CI 29.96424 2 55 03.37 +45 25 15.1 ( 5.7+ 5.5+) 567/CI 29.97187 2 54 59.21 +45 24 51.9 ( 7.3+ 1.8+) 567/CI ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1984 December 5