OAA computing section circular NK 566 Comet McNaught-Russell (1991v)
The following improved orbital elements, by S. Nakano, are from 12 observations 1991 Aug. 3 to Nov. 26. Perturbations by all nine planets and five minor planets were taken into account. The mean residual is +/- 0.63 arc second. Epoch = 1992 May 18.0 TT T = 1992 May 3.51590 +/- 0.03197 (m.e.) TT Peri. = 257.26137 +/- 0.01456 Node = 120.46195 +/- 0.00086 (2000.0) Inc. = 90.50078 +/- 0.00220 q = 3.1929167 +/- 0.0004803 AU e = 0.9946512 +/- 0.0001232 -1 1/a = 0.0016752 +/- 0.0000387 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 08 03.54744 20 24 08.00 -47 44 03.8 0.6- 0.9- 413/SS 1991 08 03.59258 20 24 04.01 -47 44 40.9 0.8+ 0.9+ 413/SS 1991 08 30.43910 19 43 34.38 -52 40 03.7 0.2+ 0.7- 413/SS 1991 08 30.48076 19 43 30.74 -52 40 23.2 1.1- 1.2- 413/SS 1991 09 01.48731 19 40 47.89 -52 55 06.2 0.7+ 1.2+ 413/SS 1991 09 06.53752 19 34 21.42 -53 28 15.8 0.4- 0.8+ 413/SS 1991 09 13.48403 19 26 36.06 -54 05 30.7 0.5+ 0.5+ 413/SS 1991 09 26.44421 19 16 04.60 -54 55 04.2 0.2- 0.1+ 413/SS 1991 10 05.46667 19 12 00.13 -55 19 15.7 0.1+ 0.4- 413/SS 1991 11 26.46951 19 36 26.10 -57 05 54.0 0.2- 0.0 413/SS 1991 11 26.47255 19 36 26.34 -57 05 54.5 0.1+ 0.1- 413/SS 1991 11 26.47718 19 36 26.66 -57 05 55.0 0.1+ 0.0 413/SS ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 1991 December 24