OAA computing section circular NK 948 156P/Russell-LINEAR (2000 QD181 = 2000 XV43 = 1986 R1 = 1993 WU)

The following improved orbital elements, by S. Nakano, are from 42 observations 1986 to 2001. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.57 arc second. Epoch = 2000 Aug. 4.0 TT T = 2000 Aug. 17.61993 +/- 0.00024 (m.e.) TT Peri. = 357.74203 +/- 0.00011 Node = 39.04707 +/- 0.00008 (2000.0) Inc. = 20.74962 +/- 0.00003 q = 1.5968368 +/- 0.0000016 AU e = 0.5570536 +/- 0.0000005 a = 3.6050340 +/- 0.0000014 AU n' = 0.14399255 +/- 0.00000009 P = 6.845 +/- 0.0000041 years T = 1986 Dec. 4.80610 TT Epoch = 1986 Nov. 26.0 TT Peri. = 357.72703 e = 0.5572596 Node = 39.05540 (2000.0) a = 3.6037000 AU Inc. = 20.75243 n'= 0.14407251 q = 1.5955036 AU P = 6.841 years T = 1993 Oct. 11.54409 TT Epoch = 1993 Oct. 20.0 TT Peri. = 357.74770 e = 0.5557196 Node = 39.04176 (2000.0) a = 3.6120801 AU Inc. = 20.71958 n'= 0.14357143 q = 1.6047763 AU P = 6.865 years The predicted orbit for the 2007 return is as follows: T = 2007 June 17.36437 TT Epoch = 2007 June 29.0 TT Peri. = 357.67760 e = 0.5576175 Node = 39.04987 (2000.0) a = 3.6012058 AU Inc. = 20.74801 n'= 0.14422221 q = 1.5931105 AU P = 6.834 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1986/ 000905 704 0.6- 0.0 001218 699 0.4+ 1.1+ 860903 413 0.5- 0.3- 000905 704 0.5- 0.7+ 001218 699 1.2+ 0.1+ 860903 413 0.1+ 0.8- 001106 704 0.7- 0.3- 001218 699 0.6+ 0.6+ 860925 413 0.8- 0.4+ 001106 704 1.2- 0.1- 001218 699 0.0 0.2- 860925 413 0.6+ 0.5+ 001106 704 0.1- 0.2+ 2001/ 1993/ 001106 704 1.1- 0.2+ 010115 704 0.0 0.0 931119 675 1.0+ 1.1- 001205 704 0.4+ 0.1- 010115 704 0.5- 0.0 931119 675 1.5+ 1.5- 001205 704 0.5+ 0.8+ 010115 704 0.2- 0.4- 931120 675 (3.0- 5.6-) 001205 704 0.2+ 0.0 010115 704 0.8+ 1.0- 2000/ 001205 704 0.6+ 0.3+ 010115 704 0.3+ 0.3+ 000831 704 0.2- 0.3+ 001205 704 0.8+ 0.5+ 010119 704 0.7- 0.3- 000831 704 0.5- 0.5+ 001207 704 0.1- 0.1- 010119 704 0.5- 0.8- 000831 704 0.4- 0.4+ 001207 704 0.4- 0.1+ 010119 704 0.1+ 0.1- 000831 704 0.0 0.9+ 001207 704 0.3- 0.9+ 010119 704 0.2- 0.0 000831 704 0.1- 0.5+ 001207 704 0.1+ 0.2+ 010119 704 0.3- 0.2- 000905 704 0.4- 0.2+ 001207 704 0.6+ 0.3+ ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2003 Apr. 24

Back to Nakano Note Page