OAA computing section circular NK 731 P/1999 RO28 (LONEOS)
The following improved orbital elements, by S. Nakano, are from 104 observations 1999 Sept. 7 to 1999 Nov. 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.78 arc second. Epoch = 1999 Sept.19.0 TT T = 1999 Oct. 2.34610 +/- 0.00001 (m.e.) TT Peri. = 219.86223 +/- 0.00008 Node = 148.44935 +/- 0.00008 (2000.0) Inc. = 8.18961 +/- 0.00018 q = 1.2317126 +/- 0.0000070 AU e = 0.6506314 +/- 0.0000234 a = 3.5255390 +/- 0.0000671 AU n' = 0.14889009 +/- 0.00000426 P = 6.620 +/- 0.0001891 years (+/- 0.07 day) The predicted orbit for the 2006 return is as follows: T = 2006 May 11.76118 TT Epoch = 2006 May 25.0 TT Peri. = 219.96888 e = 0.6512929 Node = 148.37070 (2000.0) a = 3.5210038 AU Inc. = 8.18364 n'= 0.14917785 q = 1.2277991 AU P = 6.607 years The following residuals in seconds of arc are from the above orbital elements: 1999/ 990912 587 1.3+ 0.8- 990917 848 0.3- 0.6+ 990907 699 0.0 0.3+ 990912 587 0.5+ 0.5- 990918 848 1.0+ 1.0+ 990907 699 0.8- 1.5+ 990913 704 0.1+ 0.1- 990918 848 1.5+ 0.6- 990907 699 1.3- 1.3+ 990913 704 1.6+ 1.4- 990918 848 0.0 0.3- 990907 106 0.3+ 0.4- 990913 704 0.5- 0.4- 990919 848 1.7+ 0.1+ 990907 106 0.9- 0.8- 990913 704 0.8+ 0.1- 990919 867 0.8- 0.3- 990907 106 1.3- 0.1- 990913 704 0.0 0.0 990919 867 0.3+ 1.2- 990907 557 1.5- 0.4- 990913 704 0.6+ 0.9- 990919 867 0.4- 0.5- 990907 557 1.0- 0.1- 990913 695 0.2+ 0.5+ 990920 848 0.3+ 0.1- 990907 557 1.1- 0.0 990913 695 0.8+ 0.3- 990920 848 1.1- 0.5- 990908 595 (2.2- 1.5-) 990913 695 0.4+ 0.0 990920 848 0.1+ 1.0+ 990908 595 1.5- 0.4- 990913 704 0.9+ 0.4- 991003 360 (0.5- 2.2+) 990908 595 1.3- 1.4- 990913 704 1.4+ 0.7+ 991003 360 1.6+ 0.8+ 990908 046 1.6- 0.2- 990913 848 0.1- 0.1- 991003 360 0.4- 1.9+ 990908 046 0.5- 0.4+ 990913 848 1.6- 1.0- 991008 402 1.2+ 1.4+ 990908 046 0.5- 0.2+ 990913 848 0.1- 0.7- 991008 402 1.8+ 1.2+ 990908 046 1.0- 0.0 990913 046 0.4+ 0.4+ 991008 402 0.6+ 1.3+ 990908 046 0.7- 0.7+ 990913 046 0.1+ 0.0 991009 360 0.3+ 0.5+ 990909 426 0.6+ 0.6+ 990913 046 0.1- 0.0 991009 360 0.4+ 1.1+ 990909 426 0.2- 0.3- 990913 046 0.2+ 0.0 991009 360 0.0 0.7+ 990909 426 0.6- 0.1+ 990913 046 0.5+ 0.8- 991020 402 0.4- 0.0 990909 428 0.8- 1.3- 990915 691 0.2- 0.4+ 991020 402 0.5+ 0.1+ 990909 428 1.6+ 0.3- 990915 691 1.1+ 0.4+ 991020 402 0.5- 0.4+ 990909 557 0.0 0.4- 990915 691 0.3+ 0.3+ 991030 402 (2.5- 0.3+) 990909 557 0.3- 0.2- 990915 691 0.7+ 0.1+ 991030 402 0.9- 0.8+ 990909 557 0.4- 0.3- 990915 691 0.3+ 0.4+ 991030 402 1.5- 0.2+ 990909 557 0.1- 0.2- 990915 848 0.7+ 0.1+ 991103 402 0.2- 1.0- 990910 046 0.3+ 1.3+ 990915 848 0.7+ 0.1- 991103 402 (0.4- 2.1-) 990910 046 0.4+ 0.1+ 990915 848 0.9+ 0.3+ 991103 402 1.4- 0.2+ 990910 046 1.5- 0.7+ 990915 118 0.2+ 1.4- 991103 402 0.1- 1.3- 990910 046 0.7- 1.4+ 990915 118 1.4+ 1.5- 991104 360 0.5- 0.4- 990910 426 0.5- 0.1+ 990915 595 (2.1+ 0.4+) 991104 360 0.7- 0.6- 990910 426 0.6- 0.1- 990915 595 0.8+ 0.4- 991104 360 0.7- 0.5- 990910 426 0.5- 0.3+ 990916 595 1.0+ 0.1+ 991113 695 0.1- 1.1- 990911 848 0.7- 0.4- 990916 595 1.6+ 0.0 991113 695 0.1- 0.9- 990911 848 1.0- 0.4- 990917 848 0.5- 0.6+ 991113 695 0.1- 1.1- 990911 848 1.0- 0.3- 990917 848 0.3- 1.3+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2000 Oct. 31