OAA computing section circular NK 1175 P/2004 H3 (Larsen)
The following improved orbital elements, by S. Nakano, are from 88 observations 2004 Apr. 22 to June 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.64 arc second. Epoch = 2004 Mar. 16.0 TT T = 2004 Mar. 12.93497 +/- 0.06028 (m.e.) TT Peri. = 346.49267 +/- 0.01773 Node = 220.97376 +/- 0.00017 (2000.0) Inc. = 25.15525 +/- 0.00349 q = 2.4372391 +/- 0.0001063 AU e = 0.3741513 +/- 0.0000620 a = 3.8942943 +/- 0.0001083 AU n' = 0.12825105 +/- 0.00000535 P = 7.685 +/- 0.0003204 years (+/- 0.12 day) The predicted orbit for the 2011 return is as follows: T = 2011 Nov. 23.33279 TT Epoch = 2011 Nov. 15.0 TT Peri. = 346.48722 e = 0.3725757 Node = 220.94701 (2000.0) a = 3.9052836 AU Inc. = 25.12867 n'= 0.12771009 q = 2.4502700 AU P = 7.718 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2004/ 040424 474 0.0 0.2+ 040514 360 0.5+ 0.7- 040422 691 0.0 0.2+ 040424 474 0.8- 0.5- 040514 360 0.3- 0.7- 040422 691 0.0 0.1+ 040424 474 0.2+ 0.7- 040514 360 0.1+ 0.5- 040422 691 0.1+ 0.2+ 040424 474 0.2- 0.1- 040515 J87 0.9- 0.3- 040422 428 1.0- 0.3- 040424 474 0.8+ 1.0- 040515 J87 0.7+ 0.6- 040422 428 0.2- 0.7- 040425 859 0.1- 0.4- 040515 J87 0.4- 0.4- 040422 428 2.0- 0.3- 040425 859 0.5+ 0.4- 040515 704 0.5+ 0.1- 040422 113 1.2+ 0.3- 040425 859 2.0- 0.3+ 040515 704 0.7+ 0.1- 040422 113 0.8+ 0.0 040425 704 0.2+ 0.4+ 040515 704 (2.4+ 1.3-) 040422 113 0.8+ 0.4+ 040425 704 0.4- 0.4+ 040515 704 1.5+ 0.5- 040423 704 0.0 0.8+ 040425 704 0.4+ 1.0+ 040515 704 (0.2- 2.2+) 040423 704 0.1+ 1.3+ 040425 372 (2.6+ 2.9-) 040516 104 0.8- 1.7+ 040423 704 0.2- 0.9+ 040426 204 0.1+ 0.0 040516 104 0.8- 0.5- 040423 704 0.2+ 1.4- 040426 204 0.5- 0.4- 040516 104 0.6+ 1.4+ 040423 704 0.9+ 1.8+ 040426 204 0.1- 0.8- 040517 704 0.1- 0.2- 040423 704 0.7+ 0.3- 040426 699 1.1- 0.1- 040517 704 0.4+ 0.5+ 040423 704 (0.9+ 2.4+) 040426 699 0.0 0.4+ 040517 704 0.6- 0.6+ 040423 704 0.0 0.4+ 040426 699 0.6+ 0.1+ 040517 215 1.0- 0.7- 040423 474 0.9+ 0.0 040426 699 0.2+ 0.4- 040521 704 0.3- 0.1- 040423 474 0.3+ 0.0 040427 D74 (3.2+ 5.2-) 040521 704 0.2+ 1.0+ 040423 474 0.0 0.2- 040427 D74 (0.3- 2.3-) 040521 704 0.8- 0.3+ 040423 428 0.6- 0.8- 040427 D74 (2.9- 2.3+) 040521 704 0.1- 0.8+ 040423 428 0.7- 0.1- 040428 360 0.6+ 0.7- 040521 704 0.1+ 0.7+ 040423 428 0.4- 1.1+ 040428 360 0.7- 0.6+ 040524 360 0.1+ 0.5- 040423 428 0.2+ 0.0 040428 360 0.2- 0.2- 040524 360 0.0 0.4- 040423 J87 1.5+ 0.1+ 040510 608 0.6+ 0.5+ 040524 360 0.3+ 0.9- 040423 J87 0.4- 0.8- 040510 608 0.1+ 1.2+ 040605 170 0.6- 0.7- 040423 J87 0.5- 0.3+ 040510 608 0.9+ 1.2+ 040605 170 0.6- 0.5- 040423 J87 1.0- 0.9- 040512 699 0.4- 0.6- 040605 170 0.1+ 1.0- 040424 651 0.1- 0.3- 040512 699 0.1+ 0.4+ 040613 360 0.6+ 0.0 040424 651 0.7+ 0.2+ 040512 699 0.1- 0.7- 040613 360 0.2- 0.8+ 040424 651 0.2+ 0.0 040512 699 0.4+ 0.4- 040613 360 0.3+ 0.5+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2005 Apr. 21