OAA computing section circular NK 1053 108P/Ciffreo 1985V1
The following improved orbital elements, by S. Nakano, are from 103 observations 1985 to 2000, 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 +/- 0.93 arc second. See a previous orbit in NK 651. Epoch = 2000 Apr. 6.0 TT T = 2000 Apr. 18.39494 +/- 0.00184 (m.e.) TT Peri. = 358.04353 +/- 0.00054 Node = 53.72150 +/- 0.00007 (2000.0) Inc. = 13.09288 +/- 0.00003 q = 1.7133566 +/- 0.0000031 AU e = 0.5426181 +/- 0.0000007 a = 3.7460088 +/- 0.0000023 AU n' = 0.13594113 +/- 0.00000013 P = 7.250 +/- 0.0000068 years A1 = +0.068 +/- 0.086 A2 = -0.02362 +/- 0.00091 T = 1985 Oct. 30.09783 TT Epoch = 1985 Oct. 22.0 TT Peri. = 357.91997 e = 0.5441376 Node = 53.77511 (2000.0) a = 3.7338537 AU Inc. = 13.10578 n'= 0.13660548 q = 1.7021236 AU P = 7.215 years T = 1993 Jan. 23.07942 TT Epoch = 1993 Jan. 13.0 TT Peri. = 358.03612 e = 0.5431580 Node = 53.70943 (2000.0) a = 3.7405061 AU Inc. = 13.09003 n'= 0.13624122 q = 1.7088205 AU P = 7.234 years The predicted orbit for the 2007 return is as follows: T = 2007 July 18.04773 TT Epoch = 2007 June 29.0 TT Peri. = 357.97657 e = 0.5415218 Node = 53.73892 (2000.0) a = 3.7496346 AU Inc. = 13.07827 n'= 0.13574400 q = 1.7191256 AU P = 7.261 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1985/ 851204 046 0.2+ 0.2- 860315 691 (4.2+ 0.9-) 851108 010 2.2+ 0.2- 851205 046 0.5- 0.5- 1992/ 851108 391 (6.6+ 3.6-) 851205 046 0.1- 1.3- 920826 372 0.7+ 0.7- 851108 010 0.6- 1.5- 851207 691 0.1+ 0.5- 920826 372 0.6+ 0.6+ 851109 010 1.6- 0.2+ 851207 707 (2.4+ 1.3+) 920904 372 (2.4+ 0.1+) 851109 381 (2.7+ 2.1-) 851209 657 1.4- 0.9- 920905 372 0.3- 0.3+ 851109 381 (9.9- 1.8-) 851209 046 0.8+ 0.1+ 920924 691 0.6- 1.0+ 851109 010 0.2- 0.4+ 851209 046 0.6+ 0.6- 920924 691 0.5- 0.5+ 851109 095 0.5- 0.2+ 851209 491 1.2+ 0.7+ 920924 691 0.4- 0.7+ 851110 381 0.6+ 0.5- 851212 657 0.0 0.2- 920925 691 0.6- 0.1+ 851110 095 0.3+ 2.0- 851212 491 0.5+ 0.8+ 920925 691 0.8- 0.2- 851111 397 (0.5+ 4.0-) 851212 056 0.7- 0.4- 920925 691 0.7- 0.4+ 851111 397 0.5+ 0.1- 851212 056 (3.7+ 0.7-) 920925 372 1.1+ 1.0- 851111 372 0.4- 1.1+ 851213 801 0.7+ 1.5+ 920926 372 (2.8- 0.9-) 851111 391 (0.3- 5.1+) 851213 056 0.4+ 0.7+ 920926 372 (2.5- 3.5-) 851111 392 0.5- 0.3- 851213 056 (2.5+ 0.6+) 920927 376 1.4+ 0.8- 851111 372 2.1+ 0.8+ 851214 691 1.8- 1.0- 920927 376 (0.5- 3.2-) 851111 391 1.2- 0.3- 851215 293 1.5+ 1.0- 921209 413 0.3+ 0.2- 851112 102 (8.6- 3.3-) 851215 293 0.3- 1.7- 921209 413 0.2- 0.3- 851112 372 1.3+ 1.3- 851216 662 1.9- 0.2+ 921210 413 (2.0- 3.0-) 851112 391 1.6- 1.5+ 851217 662 (2.8- 1.7+) 921210 413 0.3+ 0.4- 851112 391 1.8- 0.0 851218 691 0.8- 0.8- 921214 360 0.0 0.3- 851112 095 1.2+ 0.7- 851218 691 0.8- 0.0 921214 360 0.2- 0.1+ 851112 095 1.1+ 0.2+ 851218 691 0.5- 0.4- 1993/ 851112 494 1.1- 0.6+ 851222 094 0.2+ 0.3- 930124 786 0.3+ 0.6- 851112 978 (4.5- 2.8+) 1986/ 930124 786 1.1- 1.8- 851113 657 1.3+ 1.4- 860103 046 0.3- 0.9+ 930124 691 0.5- 1.2+ 851113 392 (3.0+ 1.3-) 860103 046 (2.9+ 2.9+) 930124 691 0.3- 0.8+ 851113 392 (0.9- 2.4-) 860105 046 2.2+ 0.2- 930226 691 1.0+ 0.6+ 851113 391 1.7- 0.9- 860105 046 (2.5+ 1.1-) 930226 691 0.3+ 0.5+ 851113 391 1.7- 0.9- 860109 801 (3.9+ 7.0+) 930226 691 0.1- 0.5+ 851114 801 0.7- 0.2+ 860110 662 0.8- 0.2+ 1999/ 851114 657 0.4- 0.3+ 860110 491 (3.8+ 2.4+) 991110 474 0.6- 1.9+ 851115 010 1.9+ 0.7+ 860112 801 0.2- 1.2+ 991110 474 (0.6- 2.3-) 851115 094 (2.5- 3.4+) 860112 691 0.2+ 0.8+ 991110 474 1.3+ 0.1- 851115 090 1.4+ 1.9+ 860112 691 0.2+ 0.2+ 991110 474 0.4- 0.2+ 851115 090 1.5- 0.6+ 860113 491 (3.4+ 0.7+) 991112 474 0.8- 0.2- 851115 323 1.4+ 0.6+ 860114 491 (3.6+ 0.2-) 991112 474 1.0- 1.0- 851116 801 0.2- 1.9+ 860120 691 0.8+ 1.0- 991112 474 0.9- 0.2- 851116 801 0.9- 2.1+ 860120 691 (3.8+ 1.1+) 991113 695 0.2- 0.7+ 851117 657 1.4+ 1.1+ 860120 691 (5.3+ 0.7+) 991113 695 0.1+ 0.8+ 851119 323 1.8+ 2.0+ 860130 707 (3.1+ 0.3-) 991113 695 0.2- 0.7+ 851120 675 0.4+ 1.6- 860204 801 (5.0+ 2.9+) 991130 360 0.1+ 0.5- 851120 675 0.9+ 1.7- 860209 801 (5.9+ 5.2+) 991130 360 1.4+ 0.5- 851122 094 (5.0+ 0.6-) 860301 707 0.3+ 0.5- 991130 360 1.3+ 0.7- 851122 707 0.1+ 0.5+ 860306 695 (5.8+ 0.2+) 2000/ 851202 046 0.2+ 0.6- 860306 695 (9.0+ 0.4-) 001222 696 0.6+ 1.0+ 851202 046 0.4- 0.7- 860315 691 (3.1+ 6.6-) 001222 696 0.8+ 1.5+ 851204 046 1.9- 1.5+ 860315 691 (4.8+ 2.2-) ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2004 Apr. 7