OAA computing section circular NK 1110 P/2003 HT15 (LINEAR)

The following improved orbital elements, by S. Nakano, are from 38 observations 2003 Jan. 27 to July 10. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.61 arc second. Epoch = 2003 May 1.0 TT T = 2003 Apr. 17.72851 +/- 0.02878 (m.e.) TT Peri. = 124.05188 +/- 0.00810 Node = 81.47257 +/- 0.00049 (2000.0) Inc. = 27.67012 +/- 0.00030 q = 2.6714685 +/- 0.0000315 AU e = 0.4198685 +/- 0.0000174 a = 4.6049361 +/- 0.0000322 AU n' = 0.09973984 +/- 0.00000105 P = 9.882 +/- 0.0001038 years (+/- 0.04 day) The predicted orbit for the 2013 return is as follows: T = 2013 Mar. 17.12080 TT Epoch = 2013 Mar. 9.0 TT Peri. = 124.10806 e = 0.4187709 Node = 81.44697 (2000.0) a = 4.6279129 AU Inc. = 27.63639 n'= 0.09899797 q = 2.6898777 AU P = 9.956 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 030426 704 0.2+ 0.0 030429 704 0.2+ 0.4+ 030127 704 (1.3+ 2.8+) 030426 704 0.8- 0.5- 030429 704 0.4+ 0.2- 030127 704 0.7+ 0.4- 030426 704 0.6- 0.4- 030429 704 0.2- 0.4- 030127 704 0.5+ 1.5+ 030427 704 0.6- 0.2+ 030601 A35 0.1+ 0.5- 030127 704 0.4- 0.2- 030427 704 0.8+ 0.5+ 030601 A35 0.5+ 0.4+ 030208 608 0.1+ 0.0 030427 704 0.9- 0.6+ 030627 J95 (2.2+ 0.5+) 030208 608 0.1+ 0.4- 030427 704 0.1+ 0.2+ 030627 J95 0.7- 1.0+ 030208 608 0.2- 1.2- 030427 704 0.4+ 0.7+ 030702 H41 1.6+ 0.2- 030424 704 0.5+ 0.0 030428 704 0.2+ 0.4- 030702 H41 1.2- 0.8- 030424 704 0.0 0.4+ 030428 704 0.1- 0.4+ 030704 H41 (2.0+ 2.7+) 030424 704 0.0 0.8- 030428 704 0.1+ 0.2- 030704 H41 (0.5+ 3.6+) 030424 704 0.4- 0.9+ 030428 704 0.0 0.3- 030710 204 1.7+ 0.4- 030424 704 1.1- 0.3+ 030428 704 0.6- 1.2- 030710 204 0.8- 0.0 030426 704 0.5+ 0.4+ 030429 704 0.4+ 0.1- 030710 204 (1.3- 3.7+) 030426 704 0.6- 0.3+ 030429 704 0.6+ 0.0 ( ) -------- Rejected Obs.

Director, Computing Section Late edition Syuichi Nakano 2003 Aug. 11

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