OAA computing section circular NK 1166 P/2003 SQ215 (NEAT-LONEOS)
The following improved orbital elements, by S. Nakano, are from 48 observations 2003 Sept. 18 to 2004 Feb. 20. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.72 arc second. See an orbit in NK 1036 (= YC 2416). Epoch = 2004 Mar. 16.0 TT T = 2004 Mar. 24.21302 +/- 0.00794 (m.e.) TT Peri. = 137.30545 +/- 0.00142 Node = 257.63307 +/- 0.00276 (2000.0) Inc. = 5.54613 +/- 0.00008 q = 2.3043197 +/- 0.0000547 AU e = 0.5816864 +/- 0.0001532 a = 5.5085933 +/- 0.0003669 AU n' = 0.07623300 +/- 0.00000762 P = 12.929 +/- 0.0012918 years (+/- 0.47 day) The predicted orbit for the 2017 return is as follows: T = 2017 Feb. 2.36214 TT Epoch = 2017 Feb. 16.0 TT Peri. = 137.54323 e = 0.5839098 Node = 257.23597 (2000.0) a = 5.4802172 AU Inc. = 5.58219 n'= 0.07682586 q = 2.2802645 AU P = 12.829 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 031213 704 0.1- 0.5- 040119 809 0.5- 0.5+ 030918 644 0.1- 1.0+ 031213 704 0.4- 0.2+ 040119 809 0.3- 0.6+ 030918 644 0.2+ 1.2+ 031222 704 0.8- 0.9- 040119 809 0.4- 0.6+ 030918 644 0.3- 1.0+ 031222 704 0.7+ 0.2- 040119 809 0.6- 0.6+ 030924 644 0.4- 0.6+ 031222 704 0.7- 0.1- 040119 809 0.2- 0.6+ 030924 644 0.8- 0.4+ 031222 704 0.5+ 0.7- 040119 809 0.4- 0.6+ 030924 644 0.5- 0.3+ 031222 704 1.2+ 1.6- 040119 809 0.4- 0.6+ 030927 699 1.7+ 0.2- 2004/ 040119 809 0.2- 0.5+ 030927 699 0.9+ 0.9- 040109 699 0.9+ 0.5- 040119 809 0.5- 0.6+ 030927 699 0.3- 1.6- 040109 699 1.7+ 0.0 040119 809 0.4- 0.5+ 030927 699 0.9- 1.6- 040109 699 (2.4+ 1.7+) 040119 809 0.4- 0.5+ 031123 703 (0.3- 4.9-) 040109 699 0.3- 0.3+ 040119 620 0.4+ 0.5- 031123 703 1.2+ 0.5+ 040117 620 0.9+ 0.1- 040119 620 1.0+ 0.4+ 031123 703 1.0+ 0.3- 040117 620 0.0 0.7- 040205 204 0.3- 1.3- 031123 703 (0.6+ 3.0-) 040119 809 1.0- 0.4+ 040205 204 0.0 0.5- 031213 704 0.5- 0.1- 040119 809 0.6- 0.5+ 040218 A33 1.2+ 1.8- 031213 704 0.2- 0.0 040119 809 0.6- 0.3+ 040220 A33 0.5+ 1.0+ 031213 704 0.1- 0.6- 040119 809 0.4- 0.4+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2005 Feb. 6