OAA computing section circular NK 1020 P/1999 J5 (LINEAR)
The following improved orbital elements, by S. Nakano, are from 63 observations 1999 May 12 to July 31. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.68 arc second. See orbits in MPC 35553 (= HICQ 2001). Epoch = 1999 May 22.0 TT T = 1999 May 12.70702 +/- 0.41471 (m.e.) TT Peri. = 132.26879 +/- 0.06071 Node = 112.01538 +/- 0.00287 (2000.0) Inc. = 13.71729 +/- 0.00085 q = 3.7128286 +/- 0.0001262 AU e = 0.1695928 +/- 0.0000326 a = 4.4710938 +/- 0.0000519 AU n' = 0.10425176 +/- 0.00000182 P = 9.454 +/- 0.0001647 years (+/- 0.06 day) The predicted orbit for the 2008 return is as follows: T = 2008 Oct. 7.80076 TT Epoch = 2008 Oct. 21.0 TT Peri. = 132.04570 e = 0.1706638 Node = 111.99939 (2000.0) a = 4.4534035 AU Inc. = 13.73323 n'= 0.10487356 q = 3.6933687 AU P = 9.398 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1999/ 990612 120 1.0- 0.8- 990614 704 0.1+ 0.5- 990512 704 1.6+ 0.5+ 990612 046 0.2+ 0.0 990614 704 0.7- 0.7- 990512 704 0.6- 0.1- 990612 046 0.3- 0.3+ 990614 734 0.7+ 0.7+ 990512 704 0.7- 0.9- 990612 046 0.2+ 1.1+ 990614 704 0.2- 0.2+ 990517 704 0.8+ 0.0 990612 046 0.0 1.0+ 990614 734 0.6+ 1.3+ 990517 704 0.4- 0.1- 990612 046 0.1+ 1.0+ 990614 704 0.2- 0.5+ 990517 704 0.6- 1.9+ 990612 046 0.2- 0.9+ 990614 734 0.2+ 0.7+ 990606 699 0.4- 0.7+ 990612 557 0.1- 0.1- 990614 734 0.8+ 0.9+ 990606 699 0.2+ 0.8+ 990612 120 1.3- 1.7- 990614 402 0.3- 1.0- 990606 699 0.1- 0.2- 990612 557 0.3- 0.1+ 990614 402 0.3+ 0.3- 990608 704 0.2- 0.5- 990613 859 (7.1+ 3.6-) 990614 402 0.4+ 0.4- 990608 704 1.2+ 0.2- 990613 859 (7.5+ 3.7-) 990614 402 0.3- 0.6- 990608 704 0.4+ 0.2+ 990613 859 (6.0+ 6.7-) 990615 360 0.0 0.0 990608 704 0.8- 1.0- 990613 120 0.0 0.1- 990615 360 0.2- 0.1- 990610 704 0.1+ 0.1+ 990613 120 0.3- 0.2+ 990615 360 0.0 0.1+ 990610 704 0.1- 0.0 990613 120 0.1+ 0.2- 990708 360 0.2- 0.0 990610 704 0.0 0.1- 990613 120 1.2+ 0.0 990708 360 0.1- 0.1+ 990610 704 0.1- 0.2- 990614 704 0.1+ 0.4+ 990721 699 0.7- 1.2+ 990610 704 0.6+ 0.1- 990614 704 1.6+ 0.4+ 990721 699 0.3+ 1.2+ 990612 428 1.4- 1.3- 990614 704 1.5+ 0.3- 990721 699 1.0- 0.5+ 990612 428 1.2- 1.1- 990614 704 0.1- 0.1+ 990731 402 (0.2- 2.2+) 990612 120 0.1+ 0.4- 990614 704 (0.1+ 2.1-) 990731 402 0.6+ 1.5- 990612 120 0.5- 1.3- 990614 704 0.1+ 0.8- 990731 402 0.6+ 0.2- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2003 Dec. 9