OAA computing section circular NK 1203 15P/Finlay
The following improved orbital elements, by S. Nakano, are from 78 observations 1974 to 2002, including planetary perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas, Vesta, and non-gravitational effect of style II. The mean residual is +/- 0.84 arc second. See previous orbit in NK 693 and MPC 44862, also 1974 orbit in NK 693. Epoch = 2002 Feb. 15.0 TT T = 2002 Feb. 7.20069 +/- 0.00028 (m.e.) TT Peri. = 323.63954 +/- 0.00095 Node = 41.96151 +/- 0.00086 (2000.0) Inc. = 3.67438 +/- 0.00004 q = 1.0340635 +/- 0.0000027 AU e = 0.7105140 +/- 0.0000006 a = 3.5720676 +/- 0.0000034 AU n' = 0.14599049 +/- 0.00000021 P = 6.751 +/- 0.0000096 years A1 = +0.560 +/- 0.039 A2 = +0.02459 +/- 0.00027 T = 1981 June 19.99905 TT Epoch = 1981 June 5.0 TT Peri. = 322.21137 e = 0.6984204 Node = 42.42283 (2000.0) a = 3.6504013 AU Inc. = 3.64679 n'= 0.14131659 q = 1.1008866 AU P = 6.974 years T = 1988 June 6.07435 TT Epoch = 1988 June 8.0 TT Peri. = 322.28358 e = 0.6994689 Node = 42.36175 (2000.0) a = 3.6413725 AU Inc. = 3.65168 n'= 0.14184251 q = 1.0943458 AU P = 6.949 years T = 1995 May 5.04650 TT Epoch = 1995 May 3.0 TT Peri. = 323.54679 e = 0.7103053 Node = 42.03986 (2000.0) a = 3.5745171 AU Inc. = 3.67350 n'= 0.14584046 q = 1.0355185 AU P = 6.758 years The predicted orbit for the 2008 return is as follows: T = 2008 June 22.54402 TT Epoch = 2008 June 23.0 TT Peri. = 347.49039 e = 0.7213570 Node = 13.80407 (2000.0) a = 3.4810425 AU Inc. = 6.81771 n'= 0.15175398 q = 0.9699681 AU P = 6.495 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1974/ 1996/ 020211 340 1.2- 0.6+ 740718 372(38.7+ 2.5+)Y 960419 691 0.6+ 0.1- 020211 372 1.5- 1.1+ 740718 372(40.1+ 7.2+) 960419 691 1.2+ 0.2- 020211 372 1.3- 0.2+ 740719 372(39.6+ 11.6+) 2002/ 020212 372 1.1- 0.3+ 740720 801(43.2+ 12.6+) 020127 349 0.6- 1.6+ 020215 372 1.3+ 1.0+ 740912 691(12.5+ 0.7+) 020127 349 (6.4+ 2.6-) 020215 367 0.5+ 1.1- 741110 691 0.9- 0.4+ 020127 349 (3.0+ 0.2-) 020215 367 0.6- 1.1- 741111 801 (3.9- 1.2+) 020127 349 (6.0+ 0.6-) 020215 367 1.2+ 0.4- 741219 691 1.0- 0.5- 020127 340 1.5- 1.3+ 020220 340 1.3+ 0.6+ 741223 801 1.1- 0.3+ 020127 340 1.7- 0.9- 020220 340 0.8+ 0.9+ 1975/ 020127 340 0.6- 1.9- 020220 340 0.6+ 0.8- 750107 691 2.5+ 1.0- 020130 340 1.0- 0.4+ 020220 340 0.6+ 0.4- 1981/ 020130 340 (2.0- 3.2-) 020309 349 0.8+ 0.4+ 810507 323 (6.6+ 9.5+) 020130 340 (2.3- 3.7-) 020309 349 0.8+ 0.8+ 810508 323(15.8+ 4.7+) 020130 340 0.3- 0.2+ 020309 349 0.3- 0.6+ 810810 675 0.4+ 0.9+ 020130 340 (2.9+ 0.7+) 020309 340 0.1- 1.5- 810811 675 0.9- 1.4- 020130 340 0.3+ 0.3+ 020309 340 0.2- 1.6- 810910 675 (8.6+ 1.0-) 020130 340 (0.6+ 3.7-) 020309 340 1.2- 0.7- 1988/ 020201 372 0.9- 0.2+ 020309 340 0.5- 0.8+ 880421 474 0.2- 1.2- 020206 402 0.3+ 0.1+ 020309 340 0.5+ 0.9- 880421 474 0.4- 0.1+ 020206 402 0.4- 0.5+ 020313 340 1.3+ 0.2+ 880422 474 1.2+ 0.3+ 020206 402 0.4- 1.2- 020313 340 0.3- 0.4- 880422 474 (4.4+ 1.9-) 020209 349 0.7+ 1.0+ 020313 340 1.3+ 0.4+ 1995/ 020209 349 0.5+ 1.0+ 020313 340 0.3- 0.2- 951026 691 0.6- 0.1- 020209 349 1.4+ 0.6+ 020313 340 1.2- 0.0 951026 691 0.5- 0.5- 020209 340 (2.4- 0.1-) 020316 349 0.6- 0.1+ 951026 691 0.6+ 0.5- 020209 340 0.9+ 0.6+ 020316 349 1.0- 0.5- 951118 691 0.7- 0.0 020209 340 0.7- 0.6+ 020324 750 1.8+ 0.1- 951118 691 1.3- 0.0 020209 340 0.5+ 1.0+ 020324 750 0.0 0.4+ 951118 691 0.6- 0.8+ 020210 349 0.8+ 1.1- 020324 750 2.0- 0.1+ 951222 693 0.8+ 0.4+ 020210 349 0.7+ 0.8- 020324 340 0.6- 1.4+ 951222 693 0.6+ 0.4+ 020210 349 1.8+ 0.4- 020324 340 (2.4+ 1.5-) 951222 693 0.8+ 0.1+ 020210 349 0.8+ 0.7- 020324 340 (4.0+ 0.3-) 951231 691 0.3- 0.6+ 020211 340 0.3- 0.8+ 020330 340 (7.0- 1.5+) 951231 691 0.0 0.2+ 020211 340 0.7- 0.0 020330 340 (5.5- 0.5-) 951231 691 0.1- 0.3+ 020211 340 0.2- 0.5- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2005 July 4