OAA computing section circular NK 989R P/2003 F2 (NEAT)
The following improved orbital elements, by S. Nakano, are from 72 observations 2003 Mar. 27 to May 28. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.62 arc second. Epoch = 2003 May 1.0 TT T = 2003 Apr. 15.04471 +/- 0.19923 (m.e.) TT Peri. = 191.65646 +/- 0.04866 Node = 359.02774 +/- 0.00102 (2000.0) Inc. = 11.60244 +/- 0.00162 q = 2.9770085 +/- 0.0001419 AU e = 0.5422486 +/- 0.0000761 a = 6.5035493 +/- 0.0001729 AU n' = 0.05942626 +/- 0.00000237 P = 16.585 +/- 0.0006614 years (+/- 0.24 day) The predicted orbit for the 2019 return is as follows: T = 2019 Nov. 12.46221 TT Epoch = 2019 Nov. 13.0 TT Peri. = 191.86692 e = 0.5419870 Node = 359.09023 (2000.0) a = 6.4841985 AU Inc. = 11.60435 n'= 0.05969248 q = 2.9698474 AU P = 16.511 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2003/ 030330 673 0.9+ 0.3+ 030401 176 0.6- 0.6+ 030327 644 0.4+ 0.3+ 030330 673 0.7- 0.2- 030401 176 0.6- 0.2+ 030327 644 1.0+ 0.3+ 030330 673 0.1- 0.6- 030401 176 0.5- 0.0 030327 644 0.6+ 0.4+ 030330 673 0.9+ 0.8- 030401 176 0.4- 0.3- 030328 809 0.3+ 0.1- 030330 673 0.1- 1.1- 030406 360 0.0 0.1- 030328 809 0.3+ 0.0 030330 448 0.1+ 0.1+ 030406 360 0.3- 0.1+ 030328 809 0.3+ 0.1- 030330 448 0.1+ 0.7+ 030406 360 0.7- 0.0 030328 246 1.4+ 0.5- 030330 448 0.5+ 0.7+ 030407 691 0.5+ 0.2- 030328 246 0.7+ 0.8- 030331 711 1.7+ 0.4+ 030407 691 0.3+ 0.2+ 030328 246 0.3- 1.1+ 030331 711 0.6+ 0.8- 030407 691 0.4+ 0.0 030328 246 0.3+ 0.2+ 030331 711 0.4- 0.4+ 030409 246 0.6+ 0.7- 030328 246 0.7- 0.9+ 030331 673 0.8+ 0.0 030409 246 0.5- 0.4+ 030328 557 0.4- 1.1- 030331 673 0.5+ 0.0 030409 246 0.4+ 0.5- 030329 557 0.1- 0.5+ 030331 673 0.1- 0.1+ 030409 246 0.6+ 0.2+ 030329 557 1.3- 1.3- 030331 246 0.4- 0.1- 030409 246 1.2- 0.0 030329 557 1.5- 0.8- 030331 246 0.5- 1.5+ 030426 691 0.7+ 0.6+ 030329 809 0.2+ 0.1+ 030331 246 0.3- 0.3+ 030426 691 0.4+ 0.8+ 030329 809 0.3+ 0.1+ 030331 557 0.5- 0.1- 030426 691 0.3+ 0.7+ 030329 809 0.2+ 0.0 030331 557 0.3+ 0.5+ 030527 568 0.3- 0.0 030329 649 0.4- 0.2- 030401 649 0.2- 0.7- 030527 568 0.5+ 0.6- 030329 649 0.6- 0.3+ 030401 649 0.1+ 0.3- 030528 568 0.4+ 0.6- 030329 649 0.4+ 0.3+ 030401 649 0.5- 0.2- 030528 568 1.0- 0.6+ 030330 734 1.9+ 0.7+ 030401 711 1.8- 0.4- 030528 568 0.1- 0.3- 030330 734 1.1- 0.4- 030401 711 1.6- 0.6- 030330 734 0.2+ 0.1- 030401 711 0.4- 0.1- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2003 Nov. 8