Nakano Note (Nakano wa Kangaeru noda) NK 2147 181P/Shoemaker-Levy 6
The following improved orbital elements, by S. Nakano, are from 81 observations 1991 to 2007, 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 +/- 0.96 arc second. See the previous orbits in NK 635, NK 944 (= HICQ 2006) and NK 1377 (= YC 2532 and HICQ 2007). Epoch = 2006 Dec. 11.0 TT T = 2006 Nov. 24.98874 +/- 0.00046 (m.e.) TT Peri. = 333.55508 +/- 0.00046 Node = 37.87222 +/- 0.00008 (2000.0) Inc. = 16.92657 +/- 0.00006 q = 1.1274857 +/- 0.0000024 AU e = 0.7064842 +/- 0.0000069 a = 3.8413112 +/- 0.0000235 AU n' = 0.13091362 +/- 0.00000120 P = 7.529 +/- 0.0000692 years A1 = +1.496 +/- 0.079 A2 = -0.74773 +/- 0.02916 T = 1991 Oct. 13.87441 TT Epoch = 1991 Oct. 31.0 TT Peri. = 333.14517 e = 0.7059688 Node = 37.93037 (2000.0) a = 3.8515270 AU Inc. = 16.85661 n'= 0.13039311 q = 1.1324691 AU P = 7.559 years [ T = 1999 May 7.26346 TT Epoch = 1999 May 22.0 TT Peri. = 333.37279 e = 0.7054868 Node = 37.83346 (2000.0) a = 3.8521765 AU Inc. = 16.89405 n'= 0.13036014 q = 1.1345169 AU P = 7.561 years ] The predicted orbit for the 2014 return is as follows: T = 2014 June 7.70977 TT Epoch = 2014 May 23.0 TT Peri. = 333.78513 e = 0.7070758 Node = 37.68194 (2000.0) a = 3.8353541 AU Inc. = 16.98106 n'= 0.13121874 q = 1.1234682 AU P = 7.511 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1991/ 911129 540 1.3- 2.3- 061214 704 0.5+ 0.8+ 911103 675 (7.5- 3.8-) 911129 056 (0.1+ 5.7-) 061214 704 0.9+ 1.1+ 911103 675 (3.0- 11.7-) 911201 104 1.1- 1.3- 061214 704 0.2+ 0.2- 911103 675 (3.9- 4.9-) 911201 104 1.2+ 1.5+ 061219 844 (1.5+ 2.6+) 911103 675 (7.3- 15.5-) 911203 056 (1.3+ 6.1+) 061219 844 0.2+ 1.5+ 911106 675 (3.4- 1.2-) 911203 104 1.1- 0.6- 061219 844(10.4+ 1.8+) 911106 675 (4.5- 10.3-) 911203 104 (2.6- 6.0-) 061221 844 (2.9+ 2.3+) 911106 675 1.3- 1.2+ 911204 372 1.4- 0.0 061221 844 (1.6+ 2.7+) 911106 675 (4.8- 7.1-) 911209 411 1.2- 0.5- 061221 844 (1.4+ 2.4+) 911107 675 (0.6- 3.9-) 911209 411 (0.3+ 2.9-) 061221 844 (3.2+ 0.9+) 911107 675 (0.8- 4.1-) 911209 411 (0.2+ 3.6-) 061221 844 (3.0+ 1.5+) 911109 675 1.4- 1.6- 911209 372 (2.5- 3.6-) 061221 G96 0.7+ 0.7- 911109 675 0.9- 0.5- 911209 372 (2.3- 4.3-) 061221 699 0.4+ 0.2- 911110 675 0.3- 0.4- 911213 372 (0.2- 4.2-) 061221 G96 (2.5+ 0.2-) 911110 675 (3.5- 8.4-) 1992/ 061221 G96 (3.7+ 0.5-) 911111 373 0.3- 0.5+ 920108 801 (4.6- 6.3-) 061221 G96 (3.3+ 0.2-) 911111 373 1.0- 2.0+ 920108 801 (4.6- 6.6-) 061221 699 (3.1+ 0.2+) 911111 896 (1.6- 7.5+) 2006/ 061221 699 (4.8+ 1.8-) 911111 896 0.1+ 1.2- 061026 E12 0.1+ 0.0 061222 704 0.8- 0.7+ 911112 402 0.9- 1.2- 061026 E12 0.3- 0.0 061222 704 0.1- 0.0 911112 402 (4.8+ 4.0+) 061027 E12 0.1+ 0.2- 061222 704 (3.5+ 1.5-) 911112 897 (4.2+ 2.5-) 061027 E12 0.1+ 0.1+ 061222 704 (2.3+ 0.2+) 911112 897 (2.0+ 3.5+) 061027 474 0.5- 1.1+ 061222 704 1.1+ 0.2- 911112 897 (3.4- 0.3-) 061027 474 0.1- 0.3+ 061223 349 0.4+ 0.4- 911113 675 0.7+ 1.9+ 061027 474 0.7- 0.8+ 061223 349 0.1+ 0.3- 911113 411 (1.6+ 4.5+) 061027 474 (1.1+ 3.5-) 061223 349 0.5+ 0.9- 911113 372 0.7- 0.6- 061117 415 0.2- 0.6+ 061223 204 0.9- 0.7- 911113 372 0.4+ 0.2+ 061117 415 1.0+ 0.8+ 061223 204 0.6- 0.4- 911113 411 0.7+ 1.0+ 061123 E12 0.9+ 0.4- 061229 349 (2.2+ 1.4-) 911125 372 (8.4+ 4.0+) 061123 E12 (2.6+ 0.8+) 061229 349 (2.6+ 1.0-) 911125 411 2.5+ 0.3- 061123 E12 0.5- 0.9- 2007/ 911125 411 0.4- 0.6+ 061123 E12 1.4+ 1.6- 070113 130 1.1+ 1.3- 911125 411 (3.1+ 2.0+) 061125 349 1.1+ 1.0- 070113 130 0.6- 0.2- 911125 411 2.1+ 1.1+ 061125 349 0.6+ 1.0- 070113 204 1.2- 0.5- 911125 411 2.5+ 0.9- 061125 349 0.7+ 1.4- 070113 204 0.6- 0.3+ 911126 046 (5.7- 10.4+) 061126 215 0.8+ 0.4+ 070114 349 0.4- 1.1- 911126 046 (3.6- 0.9+) 061202 349 1.8- 0.2- 070114 349 0.9+ 0.0 911127 056 (4.7+ 4.7-) 061202 349 1.1- 0.0 070116 699 0.7- 1.9+ 911127 046 (2.7- 3.9-) 061202 349 1.7- 0.6- 070116 699 1.1- 1.0+ 911127 046 (6.6- 4.0-) 061213 704 0.0 0.1+ 070116 699 0.6+ 0.7- 911127 056 (8.0+ 9.5+) 061213 704 1.3+ 0.5+ 070116 703 0.2- 0.4+ 911127 104 (0.4- 2.8+) 061213 704 1.2+ 0.9- 070116 703 1.4- 1.2+ 911127 104 (3.3+ 2.9+) 061213 704 1.3+ 0.9+ 070116 703 0.2+ 1.5- 911128 657 2.0+ 0.5+ 061213 704 1.5+ 0.5+ 070116 703 1.7- 0.6+ 911128 657 1.5+ 0.3+ 061213 215 0.9- 1.4- 070127 204 0.2+ 0.4+ 911129 540 0.3+ 0.9+ 061214 704 0.8- 0.4+ 070127 204 1.0- 1.3+ 911129 056 (5.4- 2.4+) 061214 704 1.4+ 0.2- ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 Nov. 1