OAA computing section circular NK 1182 91P/Russell 3

The following improved orbital elements, by S. Nakano, are from 187 observations 1983 to 2005, 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 +/- 0.75 arc second. See a previous orbit in NK 846. Epoch = 2005 July 9.0 TT T = 2005 June 26.81138 +/- 0.00090 (m.e.) TT Peri. = 354.69911 +/- 0.00023 Node = 247.89715 +/- 0.00006 (2000.0) Inc. = 14.09240 +/- 0.00002 q = 2.6019092 +/- 0.0000014 AU e = 0.3307912 +/- 0.0000003 a = 3.8880381 +/- 0.0000007 AU n' = 0.12856072 +/- 0.00000003 P = 7.666 +/- 0.0000021 years A1 = +5.571 +/- 0.164 A2 = +0.55393 +/- 0.00557 T = 1982 Nov. 23.27912 TT Epoch = 1982 Nov. 7.0 TT Peri. = 353.43815 e = 0.3445337 Node = 248.72611 (2000.0) a = 3.8298289 AU Inc. = 14.09594 n'= 0.13150280 q = 2.5103237 AU P = 7.495 years T = 1990 May 17.90058 TT Epoch = 1990 May 29.0 TT Peri. = 353.19706 e = 0.3432702 Node = 248.74197 (2000.0) a = 3.8329977 AU Inc. = 14.08579 n'= 0.13133976 q = 2.5172437 AU P = 7.504 years T = 1997 Nov. 19.21276 TT Epoch = 1997 Nov. 8.0 TT Peri. = 353.42896 e = 0.3440949 Node = 248.67194 (2000.0) a = 3.8268711 AU Inc. = 14.09576 n'= 0.13165529 q = 2.5100643 AU P = 7.486 years The predicted orbit for the 2013 return is as follows: T = 2013 Mar. 1.14442 TT Epoch = 2013 Mar. 9.0 TT Peri. = 354.63712 e = 0.3290551 Node = 247.87069 (2000.0) a = 3.9001318 AU Inc. = 14.07569 n'= 0.12796322 q = 2.6167735 AU P = 7.702 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1983/ 970305 118 0.7- 0.4- 050430 213 0.0 0.1- 830614 413 (0.3+ 2.6+) 970305 118 0.2- 0.7- 050430 415 0.2- 0.1- 830614 413 (0.7+ 4.2+) 970331 360 0.9+ 0.0 050430 415 0.3+ 0.2+ 830615 413 0.1+ 2.4+ 970331 360 0.8+ 0.3- 050501 415 0.2+ 0.1- 830617 675 0.1+ 0.9+ 970331 867 0.3+ 0.3+ 050501 415 0.2+ 0.1+ 830618 675 0.4+ 0.7+ 970331 867 0.7+ 0.4+ 050501 415 0.1- 0.0 830618 372 0.3- 1.4- 970331 867 0.5+ 0.4+ 050502 415 0.4+ 0.2- 830618 372 0.9- 1.9- 970401 118 1.3+ 0.8- 050502 415 0.6+ 0.5- 830620 675 0.3+ 1.0+ 970401 118 1.2+ 0.2- 050503 372 0.9+ 0.2- 830621 372 2.2- 0.2- 970402 118 0.3+ 0.1+ 050504 844 0.1- 1.0+ 830703 707 0.3- 0.7+ 970402 118 0.6+ 0.4+ 050504 844 0.6- 0.0 830704 474 1.0+ 1.2+ 970405 620 0.1- 1.2+ 050504 844 0.5- 0.2- 830704 474 0.4- 1.2- 970405 620 0.9- 0.6+ 050504 844 0.3- 0.1- 830704 413 (0.8+ 3.5+) 970405 620 1.1- 1.3+ 050504 360 0.5+ 0.4- 830705 474 1.2+ 0.7- 970406 620 0.7- 0.8+ 050504 360 0.7+ 0.6- 830705 474 1.3+ 0.1+ 970406 620 1.5- 1.3+ 050504 360 0.4+ 0.1+ 830710 801 0.3- 0.9- 970416 691 0.1+ 0.2- 050504 D83 1.4- 0.2+ 830714 413 0.3- 1.4+ 970416 691 0.3- 0.3+ 050504 D83 1.0- 1.6- 830714 413 (2.8- 1.1+) 970416 691 0.0 0.2+ 050507 232 1.5- 0.9- 830715 801 0.2+ 0.2+ 970424 402 0.1- 0.0 050507 232 1.1- 1.1- 830717 046 1.9- 0.6+ 970424 402 0.1+ 0.3+ 050507 349 0.5- 0.5+ 830718 046 0.3- 0.6+ 970424 402 0.8+ 1.1+ 050507 349 0.1- 0.1+ 830731 046 1.3- 0.5- 970429 360 0.1+ 0.3+ 050507 349 0.0 0.7+ 830731 046 1.0+ 0.8+ 970429 360 0.0 0.0 050507 349 0.4- 0.6+ 830801 675 1.1+ 0.4- 970509 360 0.2+ 1.0- 050507 372 0.2- 0.5- 830802 675 1.0+ 0.9- 970509 360 0.4+ 0.6- 050507 213 0.8- 0.8- 830808 046 (2.7- 0.8+) 970531 691 0.5- 1.2- 050507 213 0.9- 0.6- 830808 046 (2.6- 2.2-) 970531 691 0.4- 1.3- 050507 213 0.5- 0.3- 830809 046 (3.1+ 0.3-) 970531 691 0.5+ 1.3- 050508 493 0.8+ 0.0 830809 046 0.0 0.3- 1998/ 050508 493 0.8+ 0.2+ 830814 801 0.2- 1.0- 980521 867 0.1- 0.2- 050508 493 0.5+ 0.3+ 830816 801 0.2+ 0.1+ 980521 867 0.6- 0.3- 050509 415 0.1+ 0.1+ 830901 707 1.5+ 1.5+ 980524 691 1.6- 0.3- 050509 415 0.1+ 0.4- 830904 801 0.8- 0.1- 980524 691 1.4- 0.1- 050510 415 0.6+ 0.0 830908 801 0.6+ 0.3- 980526 118 0.8- 0.7- 050512 A13 1.0- 0.3+ 831003 801 0.5- 0.4- 980526 118 0.6- 0.5- 050512 A13 0.6- 0.9+ 831009 801 0.8- 0.2+ 980527 867 0.6- 0.4- 050512 703 1.9- 0.2+ 831031 801 1.4- 2.1- 980527 867 1.0- 1.1- 050512 703 1.7- 0.5+ 1989/ 980527 867 0.8- 0.4- 050512 703 1.3- 0.9+ 890101 675 0.3+ 0.4- 980529 118 (2.5- 0.2-) 050512 703 (3.3- 2.0+) 890101 675 0.1+ 0.2+ 980619 696 0.1- 0.2- 050513 J76 1.5+ 0.3+ 890101 675 0.2+ 0.2- 980619 696 0.1+ 0.2- 050513 J76 1.3+ 1.6+ 890101 675 0.5+ 0.5- 980619 696 0.2- 0.2- 050513 J76 0.9+ 1.4- 890101 675 0.5+ 0.4- 980703 402 0.3+ 0.2- 050514 415 0.6+ 0.1+ 890102 675 0.2- 0.1- 980703 402 0.1- 0.4+ 050514 415 0.5+ 0.4- 890102 675 1.2- 0.0 980703 402 0.0 0.1- 050514 415 0.5+ 0.6- 890102 675 0.0 0.3- 980720 046 0.3+ 0.5+ 050515 213 0.6- 1.3- 890102 675 0.2+ 0.2- 980720 046 0.1- 0.2+ 050515 213 0.2- 0.5- 1990/ 980720 046 0.7+ 0.2- 050515 213 0.0 0.3- 900526 897 0.2+ 0.9+ 980726 118 0.5+ 0.1- 050515 360 0.7+ 0.5- 900526 897 0.6+ 1.2+ 980726 118 0.8+ 0.3+ 050515 360 0.5+ 0.3- 900526 372 0.4+ 0.3- 980727 691 0.4+ 0.5+ 050516 I77 0.2- 0.9+ 900528 372 0.9- 2.0+ 980727 691 0.3+ 0.6+ 050516 I77 (1.2- 2.7+) 1996/ 980727 691 0.4+ 0.9+ 050516 I77 0.3+ 0.1+ 961118 691 1.7- 0.0 980819 504 1.6- 1.2+ 050517 I77 1.0+ 0.5+ 961118 691 1.1- 0.3- 980819 504 (2.1- 1.6+) 050517 I77 0.5- 1.5+ 961118 691 1.5- 0.0 980916 693 1.6+ 0.2+ 050519 644 0.5+ 0.6- 961119 691 1.1+ 0.6- 980916 693 1.7+ 0.3+ 050519 644 0.2+ 0.3- 961119 691 0.0 0.1- 980916 693 1.8+ 0.4+ 050519 644 0.6+ 0.3- 961119 691 0.9+ 0.8- 2004/ 050520 I77 (3.1+ 0.9+) 961221 402 0.4- 0.7+ 040318 J87 (6.3+ 2.0-) 050520 I77 (4.9- 0.9+) 961221 402 0.8+ 0.8+ 040318 J87 (6.2+ 2.3-) 050526 213 0.1+ 0.7- 961221 402 1.3- 0.1+ 040411 442 (9.7+ 2.8+) 050526 213 0.1+ 0.8- 1997/ 040424 J87 (0.7- 20.6+) 050527 J78 (2.8+ 0.2+) 970218 118 0.5+ 1.0+ 040424 J87 (2.9+ 19.9+) 050527 J78 0.2+ 0.4- 970304 360 0.0 0.3+ 2005/ 050527 J78 0.1+ 0.9- 970304 360 0.2+ 0.4+ 050330 415 0.1+ 0.3+ 050528 844 0.1- 1.8- 970304 118 0.1+ 0.5+ 050330 415 0.6- 1.0+ 050528 844 (1.2+ 2.7-) 970304 118 0.2- 0.4+ 050428 213 0.8+ 0.2- 050528 844 1.0+ 1.5- 970305 402 1.0- 0.3- 050428 213 0.1+ 0.5+ 050528 844 0.3+ 1.2+ 970305 402 0.6+ 0.3- 050430 213 0.3- 0.1- 050528 844 0.1- 0.7- 970305 402 0.7- 1.0+ 050430 213 0.1- 0.4+ ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2005 June 5

Back to Nakano Note Page