OAA computing section circular NK 1568 P/2007 T2 (Kowalski)
The following improved orbital elements, by S. Nakano, are from 123 observations 2007 Oct. 9 to 2008 Jan. 18. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.79 arc second. See an orbit on YC 2570. Epoch = 2007 Sept.17.0 TT T = 2007 Sept.19.02055 +/- 0.00032 (m.e.) TT Peri. = 358.54197 +/- 0.00041 Node = 4.00229 +/- 0.00026 (2000.0) Inc. = 9.89706 +/- 0.00008 q = 0.6958578 +/- 0.0000044 AU e = 0.7747735 +/- 0.0000107 a = 3.0895913 +/- 0.0000478 AU n' = 0.18148993 +/- 0.00000421 P = 5.431 +/- 0.0001261 years (+/- 0.05 day) The predicted orbit for the 2013 return is as follows: T = 2013 Feb. 24.82013 TT Epoch = 2013 Mar. 9.0 TT Peri. = 358.64758 e = 0.7750595 Node = 3.94113 (2000.0) a = 3.0883103 AU Inc. = 9.89252 n'= 0.18160286 q = 0.6946860 AU P = 5.427 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") Residuals in seconds of arc 2007/ 071102 G96 0.4+ 0.1- 071120 585 (2.1+ 2.5-) 070811 E12(12.7+ 23.4-) 071102 G96 0.1+ 0.0 071120 585 (1.1+ 4.0-) 070811 E12(14.1+ 23.2-) 071102 G96 0.1+ 0.0 071120 585 (0.0 2.5-) 070811 E12(13.1+ 22.6-) 071102 G96 0.6+ 0.3- 071120 G96 1.2- 0.2+ 071009 703 0.7- 0.1+ 071103 850 (3.4+ 1.0-) 071127 213 1.0- 0.0 071009 703 0.5- 0.1+ 071103 850 0.7+ 0.3- 071127 213 1.8+ 1.2- 071009 703 0.9- 0.2+ 071104 G96 1.4- 1.7+ 071127 213 (4.1+ 1.9-) 071009 703 0.8- 0.5+ 071104 G96 1.0- 1.0+ 071201 213 1.0+ 0.0 071010 585 0.7+ 0.4- 071104 G96 0.6+ 0.7- 071201 213 0.3+ 0.7+ 071010 585 0.7+ 0.1+ 071105 850 0.8+ 0.2- 071201 213 (1.0- 2.5+) 071010 585 1.4+ 0.4+ 071105 850 (2.1+ 1.7-) 071202 J47 (4.1- 3.3+) 071010 473 0.3- 0.1- 071105 850 0.4+ 0.4- 071202 J47 (4.6- 3.2+) 071010 585 0.3- 0.3+ 071106 585 0.3- 1.1- 071202 J47 (4.4- 2.9+) 071010 473 0.8- 0.4- 071106 585 1.6+ 1.7- 071204 J47 2.0+ 0.5+ 071010 473 0.4- 0.0 071106 585 0.3+ 1.0- 071204 J47 (4.9- 4.9+) 071010 473 0.3- 0.0 071106 585 1.6+ 1.4- 071204 J47 (3.8- 4.0+) 071010 850 0.1+ 0.7- 071107 734 0.8+ 0.5- 071205 213 (3.0- 1.7+) 071010 850 0.5- 0.2- 071107 734 0.4- 0.6+ 071205 213 1.1+ 1.0- 071010 703 0.4- 0.5+ 071107 734 0.4+ 0.5- 071205 349 0.2- 0.3- 071010 703 0.9- 0.3+ 071107 734 0.2- 0.1+ 071205 349 0.6+ 0.0 071010 G96 0.7- 0.0 071111 213 0.5- 0.0 071205 349 0.1+ 0.3+ 071010 G96 1.6+ 1.0- 071111 213 1.3- 0.6+ 071206 J47 (1.7- 4.7+) 071010 G96 0.7- 0.0 071111 213 1.4- 1.1+ 071206 J47 (0.7+ 2.5+) 071010 G96 0.5- 0.2+ 071112 J51 0.7+ 1.0+ 071206 J47 (0.9- 2.4+) 071011 204 0.3- 0.0 071112 J51 (2.7- 3.1+) 071209 213 0.1- 0.0 071011 204 0.3- 0.2- 071113 473 (2.1+ 1.8-) 071209 213 0.3- 0.6+ 071011 850 0.2- 0.9- 071113 473 (2.1+ 1.6-) 071209 213 (6.9- 5.7+) 071011 850 0.3- 0.2- 071113 473 (0.5- 3.2-) 071214 B49 2.0- 1.0+ 071011 850 1.9+ 0.4- 071114 J47 0.3- 1.9+ 071215 J47 0.1- 0.3- 071011 734 0.5- 0.0 071114 J47 (2.6- 2.5+) 071215 J47 0.5+ 0.2- 071011 651 0.2+ 0.3- 071114 J47 (2.3- 2.3+) 071215 J47 0.7+ 0.8- 071011 734 0.2- 0.1- 071114 J47 (2.7- 2.8+) 071216 J47 (4.8- 2.4+) 071011 651 0.2- 0.5+ 071114 J47 (2.7- 2.9+) 071216 J47 1.0- 0.1- 071011 734 0.1- 0.2- 071114 H06 1.4+ 1.5- 071216 703 (3.8+ 3.8-) 071011 734 0.0 0.5- 071114 G96 (2.3- 2.1+) 071216 703 (0.9+ 2.4-) 071015 850 0.1+ 0.1- 071114 G96 1.4- 1.5+ 071216 703 (2.8+ 2.2-) 071015 850 0.1- 0.1- 071114 G96 0.4- 0.6+ 071216 703 1.3+ 0.9- 071015 G96 (3.8+ 3.5-) 071114 H06 1.3+ 1.8- 071219 213 1.3- 0.4+ 071015 G96 (4.2+ 3.0-) 071115 J95 0.8- 0.4+ 071219 213 (5.4- 3.1+) 071015 G96 (4.1+ 3.9-) 071115 J95 0.2- 0.5- 071224 213 (2.9- 2.0+) 071015 G96 (3.9+ 3.2-) 071115 J95 1.0- 0.9+ 071224 213 (5.7- 3.9+) 071017 585 (0.8- 3.0-) 071116 213 0.0 1.0+ 071224 213 (9.9- 5.8+) 071017 585 0.0 0.2- 071116 213 0.2- 0.4+ 071227 B49 (4.2+ 0.3-) 071017 585 0.1- 0.7+ 071116 213 0.4- 1.7+ 071231 213 (1.9+ 2.6-) 071018 585 0.9+ 1.3- 071116 850 (4.6+ 3.4-) 071231 213 (1.2+ 2.2-) 071018 585 (0.5+ 2.6-) 071116 G96 0.3+ 0.3- 071231 349 (2.4- 2.0+) 071018 585 (0.2- 2.1-) 071116 G96 0.2+ 0.3+ 071231 349 1.7- 1.2+ 071018 585 0.1- 1.0- 071116 850 1.1+ 1.0- 2008/ 071018 585 0.2+ 0.6- 071116 G96 0.2- 0.4+ 080110 215 (4.3- 2.9+) 071019 G96 0.1+ 0.7- 071116 G96 0.2+ 0.3+ 080115 213 1.1+ 0.2+ 071019 G96 0.3+ 0.7- 071117 232 1.3+ 0.5- 080115 213 0.5+ 0.2- 071019 G96 0.5+ 0.5- 071117 232 1.3+ 0.9- 080116 G96 (2.9- 0.8-) 071019 G96 0.0 1.0- 071117 J47 0.4- 0.6+ 080116 G96 1.6- 0.4- 071020 349 0.7+ 0.4+ 071117 232 0.4- 0.2- 080116 G96 1.1- 0.8- 071020 349 0.7+ 0.4+ 071117 J47 0.1- 1.1+ 080116 G96 1.6- 0.3+ 071020 349 0.8+ 0.4+ 071117 J47 0.4+ 0.8+ 080118 G96 0.9+ 0.5- 071021 703 0.4- 1.4+ 071119 213 1.2+ 0.9- 080118 G96 0.4+ 1.0- 071021 703 0.8- 1.4+ 071119 213 1.1- 0.3+ 080118 G96 (2.2- 0.4-) 071021 703 0.7- 1.8+ 071119 213 (2.8- 1.3+) 080118 G96 0.4+ 1.2- 071021 703 0.6- 1.3+ 071120 585 (2.0+ 3.1-) ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2008 Feb. 14 Residuals on 2007 Aug. inseted on 2010 Apr. 23