November 06, 2004 05:27:40 UT Comet P/1983 V1 = 2004 V2 ( Hartley-IRAS ) *** Comet 161P/Hartley-IRAS The following improved orbital elements by Kenji Muraoka, are from 55 observations 1983 Nov. 23 to 2004 Nov. 5, perturbations by 9 Plantes, Moon and 5 minor planets were taken into account. The mean residual is +/- 1.14 arc seconds. Epoch = 2005 July 9.0 TT JDT = 2453560.5 T = 2005 June 20.83935 +/- 0.00029 (m.e.) TT Peri. = 47.07556 +/- 0.00021 Node = 1.39998 +/- 0.00013 (2000.0) Incl. = 95.69689 +/- 0.00007 q = 1.2751316 +/- 0.0000018 AU e = 0.8350828 +/- 0.0000002 a = 7.7319501 +/- 0.0000019 AU nK = 0.04584273 +/- 0.00000002 P = 21.500 +/- 0.0000078 years T = 1984 Jan. 8.70529 TT Epoch = 1984 Jan. 21.0 TT Peri. = 47.11164 e = 0.8338324 Node = 1.50136 (2000.0) a = 7.7176418 AU Incl. = 95.73064 nK = 0.045970280 q = 1.2824220 AU P = 21.440 years Residuals in seconds of arc 831104 413 (3.0- 9.7+) 840226 168 (1.6- 2.6-) 840403 114 (2.8- 2.0+) 831104 413 (4.2- 9.4+) 840226 168 1.7- 0.2- 840405 491 0.5+ 1.7- 831123 413 (0.6- 4.8+) 840227 114 2.0- 0.4- 840406 491 1.3+ 1.2- 831123 413 0.2+ 0.8+ 840301 168 (5.3+ 4.1+) 840406 168 (3.0+ 1.2-) 831127 675 (0.3+ 3.5+) 840302 168 0.2- 0.6+ 840407 168 (4.0+ 4.4-) 831128 675 (4.5+ 8.8-) 840302 372 2.2+ 0.6- 840408 675 (3.8- 11.1+) 831130 688 (2.7+ 1.5+) 840303 168 2.0+ 0.2+ 840413 657 2.2- 1.3+ 831130 657 (4.2+ 8.6+) 840303 168 1.5+ 0.4+ 840417 168 0.1- 1.5- 831130 688 0.5+ 0.9+ 840304 168 (1.4+ 3.1-) 840417 168 0.1- 1.4+ 831201 657 0.6+ 0.0 840304 168 (1.4+ 6.1-) 840418 168 (3.3+ 0.2+) 831201 801 1.7- 0.9+ 840304 168 0.2+ 0.8+ 840418 168 (5.6+ 0.6+) 831203 046 (1.8- 2.8+) 840304 372 2.0+ 0.6- 840418 168 1.2+ 1.2+ 831203 046 (1.5- 3.8-) 840308 168 (5.3+ 3.4-) 840420 675 0.4+ 1.9+ 831204 657 (3.9+ 2.0+) 840309 168 0.1+ 0.3- 840420 102 (3.6- 1.6+) 831204 046 1.3- 1.4+ 840311 675 (1.5+ 2.6-) 840421 675 1.5+ 2.1+ 831204 046 (1.5+ 6.1-) 840321 102 (8.1+ 8.3-) 840422 168 (2.1+ 4.7+) 831205 688 0.1- 1.4- 840322 168 0.1- 1.6+ 840423 168 (5.0+ 6.8+) 831205 688 0.8+ 1.6- 840327 114 0.2- 1.1+ 840425 657 0.9- 0.5- 831207 046 0.8- 0.6+ 840327 114 (1.0- 2.7+) 840426 657 0.6+ 0.5- 831207 046 1.8+ 0.3- 840328 136 (0.0 5.6-) 840427 657 (5.9- 0.1+) 831208 707 0.7+ 1.2+ 840328 801 (2.2+ 3.0-) 840428 801 0.2- 2.2- 831208 413 (3.9- 1.6+) 840328 381 (2.7+ 1.2-) 840503 168 1.5+ 0.8- 831208 413 (3.7+ 3.2-) 840329 168 (2.0- 3.1-) 840525 095 (4.7- 3.2+) 831208 801 1.6- 0.3+ 840329 168 1.3- 0.3- 840528 095 0.2- 0.6- 831225 984 1.4+ 1.7+ 840329 168 (0.2- 4.4-) 840604 801 (3.4- 1.9+) 831229 688 (0.8- 2.5-) 840329 114 1.5- 0.2+ 041103 413 0.1- 0.5- 831229 688 2.3+ 1.1- 840330 657 (2.8+ 2.8-) 041103 413 0.2- 0.8- 840101 801 0.3- 1.3- 840331 114 2.5+ 0.4- 041103 413 0.1- 0.3- 840104 502 (2.3+ 4.7-) 840401 136 (0.6- 6.9+) 041105 474 0.2+ 0.3- 840107 801 1.8- 2.1- 840401 136 2.0- 0.4- 041105 474 0.0 0.9- 840109 801 (2.2- 2.6-) 840401 136 1.2- 0.0 041105 474 0.2- 0.8- 840211 675 (0.4+ 2.7-) 840402 657 1.5- 2.1- 041105 474 0.3- 0.8+ 840225 168 1.0- 1.8- 840402 114 0.5+ 0.4+ 041105 413 0.4- 0.0 840225 168 (1.1- 2.8-) --