OAA computing section circular NK 743 41P/Tuttle-Giacobini-Kresak
The following improved orbital elements, by S. Nakano, are from 84 observations 1989-2000, 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 +/- 0.92 arc second. Epoch = 2001 Jan. 11.0 TT T = 2001 Jan. 6.97079 +/- 0.00079 (m.e.) TT Peri. = 62.16995 +/- 0.00089 Node = 141.10658 +/- 0.00029 (2000.0) Inc. = 9.22540 +/- 0.00006 q = 1.0522442 +/- 0.0000022 AU e = 0.6592544 +/- 0.0000036 a = 3.0880643 +/- 0.0000108 AU n' = 0.18162456 +/- 0.00000095 P = 5.427 +/- 0.0000284 years A1 = +2.011 +/- 0.135 A2 = +0.05224 +/- 0.00038 T = 1990 Feb. 8.20253 TT Epoch = 1990 Jan. 29.0 TT Peri. = 61.59192 e = 0.6556761 Node = 141.55591 (2000.0) a = 3.1019908 AU Inc. = 9.22467 n'= 0.18040282 q = 1.0680894 AU P = 5.463 years T = 1995 July 28.79840 TT Epoch = 1995 July 22.0 TT Peri. = 61.67606 e = 0.6563407 Node = 141.50012 (2000.0) a = 3.0999086 AU Inc. = 9.22496 n'= 0.18058461 q = 1.0653124 AU P = 5.458 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1989/ 950825 422 0.1+ 0.1+ 001125 349 0.9+ 0.9- 891109 675 0.2+ 2.1+ 950825 422 0.4+ 0.3- 001128 349 0.2- 0.3- 891109 675 0.2- 2.3+ 950826 422 0.4+ 0.1- 001128 349 0.4- 0.5- 891109 675 0.4+ 2.5+ 950826 422 0.0 1.7+ 001128 349 0.2- 0.3- 891110 675 1.4+ 1.2+ 950826 587 (2.5+ 1.1+) 001128 372 1.1+ 0.5- 891110 675 0.3+ 2.0+ 950826 587 1.8+ 1.2+ 001128 360 0.6+ 0.6- 891110 675 0.4+ 1.2+ 950907 413 0.4+ 1.6+ 001128 360 0.3+ 0.6- 1990/ 950907 413 0.2+ 0.8+ 001130 921 1.2- 0.5+ 900125 897(13.9+ 0.1+) 950908 367 0.1+ 0.8+ 001130 921 1.6- 0.1+ 900125 897(11.1+ 0.0 ) 950908 367 0.5+ 0.5+ 001130 921 (2.1- 0.8-) 1995/ 950912 413 0.6+ 1.8+ 001130 921 (2.4- 1.1-) 950128 691 1.5- 0.7+ 950912 413 0.2+ 2.0+ 001201 349 0.7- 0.5- 950128 691 1.5- 0.3+ 951006 897 (2.9- 2.8+) 001201 349 0.9- 0.0 950128 691 1.3- 0.1- 951029 413 0.3+ 1.9+ 001201 349 0.2- 0.2+ 950129 691 0.5+ 1.1+ 951029 413 0.8+ 1.8+ 001203 372 1.3- 0.5+ 950129 691 1.8+ 1.3+ 2000/ 001204 355 0.9- 0.6- 950129 691 1.0+ 1.6+ 001107 897 (0.7+ 2.4-) 001204 355 1.0- 0.6- 950523 360 0.6- 0.3+ 001107 897 0.4+ 0.6- 001204 355 0.7- 0.3- 950523 360 (2.8- 1.0+) 001117 349 0.4+ 0.2- 001204 300 0.5- 0.2- 950523 360 0.5- 1.9+ 001117 349 1.8+ 0.6- 001204 300 0.3- 0.5- 950620 360 1.7- 0.1+ 001118 897 1.1+ 1.8- 001204 300 0.0 0.4- 950620 360 0.5- 0.3+ 001118 897 0.1+ 1.0- 001204 300 0.6- 0.2- 950620 360 1.0- 0.5- 001118 897 0.5+ 0.5- 001204 300 0.1- 0.1- 950818 367 1.5+ 0.4+ 001121 372 1.5+ 1.2- 001206 360 0.4+ 0.3- 950818 367 0.9- 0.7+ 001122 372 1.5+ 1.4- 001206 360 0.3+ 0.4- 950818 367 0.5- 1.3+ 001123 349 0.3+ 1.0- 001208 349 1.4- 0.8+ 950818 367 0.3+ 1.2+ 001123 349 1.0+ 0.6- 001208 349 1.6- 0.4+ 950818 367 0.3+ 1.0+ 001123 349 0.3+ 0.9- 001208 349 0.8- 0.1- 950818 367 0.8+ 0.0 001123 349 0.8+ 0.4- 001208 349 1.0- 0.4- 950818 367 0.3+ 0.4- 001125 349 0.3+ 0.7- 001208 908 1.1- 0.4+ 950823 422 0.2+ 0.4- 001125 349 0.6+ 0.7- 001208 908 0.8- 0.5+ 950823 422 0.2+ 0.5+ 001125 349 0.7+ 1.0- 001208 908 1.0- 0.2+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2000 Dec. 9