OAA computing section circular NK 845 P/1983 V1 (Hartley-IRAS)
The following improved orbital elements, by S. Nakano, are from 63 observations 1983 Nov. 4 to 1984 June 4. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta were taken into account. The mean residual is +/- 1.40 arc seconds. Epoch = 1984 Jan. 21.0 TT T = 1984 Jan. 8.70893 +/- 0.00044 (m.e.) TT Peri. = 47.11428 +/- 0.00030 Node = 1.49954 +/- 0.00024 (2000.0) Inc. = 95.73127 +/- 0.00009 q = 1.2824565 +/- 0.0000041 AU e = 0.8338952 +/- 0.0000130 a = 7.7207693 +/- 0.0000782 AU n' = 0.04594235 +/- 0.00000070 P = 21.453 +/- 0.0003259 years (+/- 0.12 day) The predicted orbit for the 2005 return is as follows: T = 2005 June 25.60890 TT Epoch = 2005 July 9.0 TT Peri. = 47.07749 e = 0.8351467 Node = 1.39761 (2000.0) a = 7.7352594 AU Inc. = 95.69718 n'= 0.04581332 q = 1.2751829 AU P = 21.514 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1983/ 840109 801 1.8- 0.7- 840401 136 (0.9- 7.3+) 831104 413 0.6- 0.2+ 840211 675 0.5+ 0.8- 840401 136 2.3- 0.0 831104 413 1.7- 0.0 840225 168 1.0- 0.2- 840401 136 1.6- 0.4+ 831123 413 0.1- 2.0+ 840225 168 1.1- 1.2- 840402 657 1.8- 1.7- 831123 413 0.7+ 2.0- 840226 168 1.6- 0.9- 840402 114 0.2+ 0.7+ 831127 675 0.8+ 1.5+ 840226 168 1.7- 1.5+ 840403 114 (3.2- 2.3+) 831128 675 (4.9+ 10.6-) 840227 114 2.1- 1.2+ 840405 491 0.1+ 1.5- 831130 688 (3.1+ 0.1+) 840301 168 (5.3+ 5.6+) 840406 491 0.9+ 1.0- 831130 657 (4.6+ 7.2+) 840302 168 0.3- 2.1+ 840406 168 2.7+ 1.0- 831130 688 0.9+ 0.5- 840302 372 2.2+ 0.9+ 840407 168 (3.7+ 4.3-) 831201 657 1.0+ 1.3- 840303 168 2.0+ 1.6+ 840408 675 (4.2- 11.2+) 831201 801 1.3- 0.2- 840303 168 1.5+ 1.9+ 840413 657 2.6- 1.2+ 831203 046 1.4- 2.0+ 840304 168 1.4+ 1.7- 840417 168 0.4- 1.8- 831203 046 (1.1- 4.6-) 840304 168 (1.3+ 4.6-) 840417 168 0.5- 1.1+ 831204 657 (4.3+ 1.3+) 840304 168 0.2+ 2.2+ 840418 168 (2.9+ 0.2-) 831204 046 0.9- 0.7+ 840304 372 2.0+ 0.8+ 840418 168 (5.3+ 0.3+) 831204 046 (1.8+ 6.7-) 840308 168 (5.2+ 2.1-) 840418 168 0.8+ 0.8+ 831205 688 0.3+ 2.0- 840309 168 0.0 1.0+ 840420 675 0.1+ 1.4+ 831205 688 1.2+ 2.2- 840311 675 1.4+ 1.4- 840420 102 (3.8- 1.2+) 831207 046 0.4- 0.3+ 840321 102 (7.9+ 7.5-) 840421 675 1.2+ 1.6+ 831207 046 2.1+ 0.5- 840322 168 0.3- 2.4+ 840422 168 (1.9+ 4.1+) 831208 707 1.0+ 1.0+ 840327 114 0.5- 1.6+ 840423 168 (4.9+ 6.2+) 831208 413 (3.6- 1.4+) 840327 114 (1.3- 3.3+) 840425 657 0.9- 1.1- 831208 413 (4.0+ 3.4-) 840328 136 (0.3- 5.0-) 840426 657 0.6+ 1.2- 831208 801 1.2- 0.2+ 840328 801 1.9+ 2.4- 840427 657 (5.8- 0.6-) 831225 984 (1.7+ 3.0+) 840328 381 2.4+ 0.6- 840428 801 (0.1- 3.0-) 831229 688 0.5- 1.0- 840329 168 2.3- 2.6- 840503 168 1.9+ 1.5- 831229 688 2.7+ 0.4+ 840329 168 1.6- 0.2+ 840525 095 (3.7- 2.2+) 1984/ 840329 168 (0.5- 3.9-) 840528 095 0.8+ 1.7- 840101 801 0.0 0.3+ 840329 114 1.8- 0.7+ 840604 801 2.3- 0.7+ 840104 502 (2.6+ 3.0-) 840330 657 2.5+ 2.3- 840107 801 1.5- 0.3- 840331 114 2.1+ 0.0 ( ) -------- Rejected Obs.
Director, Computing Section Late edition Syuichi Nakano 1999 Nov. 16