OAA computing section circular NK 1269 P/2004 DO29 (Spacewatch-LINEAR)
The following improved orbital elements, by T. Kobayashi, are from 70 observations 2004 Feb. 11 to 2005 July 10. Perturbations by Mercury to Pluto were taken into account. The mean residual is +/- 0.63 arc second. See an orbit in NK 1174. Epoch = 2004 Oct. 2.0 TT T = 2004 Oct. 9.34401 +/- 0.03056 (m.e.) TT Peri. = 41.59554 +/- 0.00413 Node = 147.77717 +/- 0.00014 (2000.0) Inc. = 14.49555 +/- 0.00008 q = 4.0968867 +/- 0.0000171 AU e = 0.4495817 +/- 0.0000192 a = 7.4432241 +/- 0.0002617 AU n' = 0.04853583 +/- 0.00000257 P = 20.307 +/- 0.0010700 years (+/- 0.39 day) The predicted orbit for the 2024 return is as follows: T = 2024 June 3.16828 TT Epoch = 2024 June 19.0 TT Peri. = 40.40257 e = 0.4422515 Node = 147.37499 (2000.0) a = 7.3107783 AU Inc. = 14.52520 n'= 0.04986073 q = 4.0775759 AU P = 19.767 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2004/ 040315 703 0.2- 0.9+ 040320 360 0.2+ 0.5- 040211 699 0.7- 0.0 040315 703 0.4+ 0.9+ 040320 360 0.1- 0.2+ 040211 699 0.8+ 1.3- 040315 703 1.0- 0.1+ 040320 J87 0.4- 0.0 040211 699 (2.2- 0.7-) 040315 703 0.2- 0.4- 040320 J87 0.0 0.6- 040211 699 0.2+ 0.4+ 040316 568 0.4+ 0.3- 040320 J87 0.2- 0.3- 040217 691 0.4+ 0.4- 040316 568 0.3+ 0.5- 040322 704 0.6+ 0.1+ 040217 691 0.0 0.3- 040316 568 0.4+ 0.5- 040322 704 1.8+ 0.9+ 040217 704 1.4- 1.0+ 040317 215 0.4+ 0.2- 040322 704 0.9- 0.0 040217 691 0.3- 0.5- 040317 204 0.0 0.2+ 040326 703 0.2- 0.6+ 040217 704 0.6+ 0.3+ 040318 204 0.2+ 0.3+ 040326 703 0.4- 0.3+ 040217 704 0.6+ 0.9+ 040318 372 0.3- 0.5- 040326 703 1.1- 0.2+ 040217 704 1.7+ 1.0+ 040318 360 0.2+ 0.3+ 040326 703 0.0 0.0 040223 704 0.5+ 0.8- 040318 360 0.0 0.6- 040412 213 (1.5- 2.2-) 040223 704 0.1+ 0.9- 040318 360 1.1- 0.3- 040412 213 1.4- 1.5- 040223 704 0.1- 0.2+ 040319 J87 0.5- 0.0 040414 215 0.8- 0.5+ 040223 704 0.2- 0.3- 040319 J87 0.3- 0.3- 040420 360 0.5+ 0.1- 040223 704 0.2- 0.4- 040319 J87 1.3- 0.5- 040420 360 0.7+ 0.2- 040225 704 0.9- 1.2- 040319 644 0.3+ 0.2+ 040420 360 0.5+ 0.2- 040225 704 (1.3+ 2.3+) 040319 644 0.5+ 0.3+ 2005/ 040225 704 0.9- 0.5+ 040319 644 0.3+ 0.4+ 050604 291 0.1- 0.2- 040225 704 0.8- 0.1+ 040319 704 1.6+ 0.1+ 050604 291 0.2+ 0.4+ 040225 704 0.8- 0.0 040319 704 1.0+ 0.6+ 050604 291 0.3- 0.1+ 040226 704 (2.2- 0.5+) 040319 704 0.9+ 0.1+ 050710 673 0.2- 0.6+ 040226 704 (2.3- 0.4+) 040319 704 1.0+ 0.8+ 050710 673 0.1+ 0.2- 040226 704 0.7+ 0.5+ 040319 213 0.5- 0.6+ 040226 704 0.4- 0.2+ 040320 360 0.3+ 0.0 ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2005 Oct. 26