OAA computing section circular NK 465 Periodic Comet Kowal-Vavrova 1983t
The following improved orbital elements, by S. Nakano, are from 12 observations 1983 May 8 to 1983 September 28. Pertur- bations by all nine planets were taken into account. The mean residual is +/- 2.00 arc seconds: Epoch = 1983 Apr. 16.0 ET T = 1983 Apr. 2.42029 +/- 0.65212 (m.e.) ET Peri. = 19.49666 +/- 0.88695 Node = 201.84722 +/- 0.87012 1950.0 Inc. = 4.31756 +/- 0.06266 q = 2.6088632 +/- 0.0022638 AU e = 0.5881667 +/- 0.0003074 a = 6.3347553 +/- 0.0028039 AU nß = 0.061817197 +/- 0.000041042 P = 15.944 +/- 0.010586 years (+/- 3.87 days) The extension orbit is from the above orbital elements: T = 1983 Apr. 1.09701 ET Epoch = 1985 May 15.0 ET Peri. = 19.29080 e = 0.5870457 Node = 201.68327 1950.0 a = 6.3019838 AU Inc. = 4.32007 nß= 0.062300015 q = 2.6024316 AU P = 15.820 years m1 = 8.5 (k=15) m2 = 13.3 (k=5) 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 May 8.22917 15 34 04.67 -15 38 07.6 3.0- 1.1+ 675/kw 8.28125 15 34 03.45 -15 37 57.6 2.2+ 0.6- 675/kw 9.30000 15 33 33.66 -15 34 04.6 2.8- 0.8+ 675/kw 9.35208 15 33 32.54 -15 33 55.3 4.3+ 1.6- 675/kw 14.94676 15 30 46.04 -15 13 00.8 2.3+ 1.2- 046/vv 14.97436 15 30 44.77 -15 12 53.5 3.4- 0.0 046/vv 15.25764 15 30 36.41 -15 11 48.7 3.1- 1.6+ 675/kw 15.30972 15 30 35.19 -15 11 38.5 3.4+ 0.5+ 675/kw 31.87898 15 22 53.50 -14 18 48.1 0.6- 1.4- 046/mr 31.89039 15 22 53.30 -14 18 44.3 0.6+ 0.7+ 046/mr Sept.28.40793 16 41 20.63 -18 29 20.1 1.7+ 0.1- 413/SS 28.42182 16 41 21.58 -18 29 22.3 1.6- 0.3+ 413/SS S. Nakano 1984 December 4 ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1984 December 2