Nakano Note (Nakano wa Kangaeru noda) NK 2208 P/2011 VJ5 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 42 observations 2011 Nov. 3 to 2012 Feb. 4. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.67 arc second. Epoch = 2011 Dec. 25.0 TT T = 2011 Dec. 8.66532 +/- 0.01906 (m.e.) TT Peri. = 315.09929 +/- 0.01256 Node = 169.98618 +/- 0.02166 (2000.0) Inc. = 3.97185 +/- 0.00092 q = 1.5059169 +/- 0.0006234 AU e = 0.5562141 +/- 0.0018406 a = 3.3933412 +/- 0.0041686 AU n' = 0.15767498 +/- 0.00029047 P = 6.251 +/- 0.0115192 years (+/- 4.21 days) The predicted orbit for the 2018 return is as follows: T = 2018 Mar. 13.49035 TT Epoch = 2018 Mar. 23.0 TT Peri. = 315.25545 e = 0.5560073 Node = 169.90580 (2000.0) a = 3.3949283 AU Inc. = 3.97451 n'= 0.15756442 q = 1.5073233 AU P = 6.255 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2011/ 120201 703 (2.3- 0.4-) 120202 807 0.9+ 0.4- 111103 G96 0.4+ 0.0 120201 703 (2.6- 0.5-) 120202 G96 0.2- 0.0 111103 G96 0.8+ 0.0 120201 703 0.8- 0.3- 120202 G96 0.3- 0.6+ 111103 G96 0.0 0.1+ 120201 703 1.1- 0.7+ 120202 G96 0.4- 0.3+ 111103 G96 0.0 0.3- 120201 703 0.1+ 0.0 120202 G96 1.2- 0.4+ 111104 H36 1.9+ 0.3- 120201 G96 0.5+ 0.2+ 120202 703 0.8+ 0.9- 111104 H36 1.3- 0.2+ 120201 G96 0.2+ 0.2- 120202 703 0.1+ 1.1- 111104 H36 0.4- 1.3+ 120201 G96 0.4+ 0.1- 120202 703 1.9- 0.6- 111105 B18 0.7- 0.6- 120201 G96 0.1+ 0.2+ 120203 H06 0.5+ 0.4+ 111105 B18 0.1+ 0.1+ 120201 F65 0.9+ 0.1- 120203 H06 0.7- 0.8+ 111105 B18 0.5- 0.1- 120201 F65 0.9+ 0.2- 120203 H06 1.5- 0.9+ 111105 B18 0.3- 0.3- 120201 F65 1.0+ 0.1- 120203 H06 1.5- 0.7+ 2012/ 120202 807 0.9+ 0.2- 120204 215 0.2+ 0.2+ 120201 703 (2.3- 0.5+) 120202 807 0.6+ 0.4- 120204 215 0.6+ 0.1- 120201 703 0.3- 0.2- 120202 807 0.6+ 0.2- 120204 215 0.9+ 0.4- 120201 703 1.1- 0.5+ 120202 807 0.7+ 0.3- ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2012 Feb. 7