Nakano Note (Nakano wa Kangaeru noda) NK 2581 P/2013 N5 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 28 observations 2013 July 14 to Oct. 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.45 arc second. Epoch = 2013 July 7.0 TT T = 2013 July 2.42839 +/- 0.00212 (m.e.) TT Peri. = 176.23607 +/- 0.00111 Node = 187.74382 +/- 0.00049 (2000.0) Inc. = 23.24153 +/- 0.00020 q = 1.8229300 +/- 0.0000248 AU e = 0.7316838 +/- 0.0000594 a = 6.7939611 +/- 0.0002218 AU n' = 0.05565696 +/- 0.00000273 P = 17.709 +/- 0.0008673 years (+/- 0.32 day) The predicted orbit for the 2031 return is as follows: T = 2031 Mar. 25.94218 TT Epoch = 2031 Apr. 4.0 TT Peri. = 177.16841 e = 0.7315294 Node = 187.02137 (2000.0) a = 6.7959582 AU Inc. = 23.35491 n'= 0.05563243 q = 1.8245148 AU P = 17.716 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2013/ 130801 568 0.1+ 0.3+ 130901 Q62 0.1- 0.2- 130714 F51 0.0 0.2- 130803 K91 0.0 0.2- 130901 Q62 0.1+ 0.8- 130714 F51 0.0 0.3- 130803 K91 0.2+ 0.2- 130901 Q62 0.3+ 1.5- 130714 F51 0.2- 0.2- 130803 K91 0.3+ 0.6- 130906 215 1.2- 0.7+ 130714 F51 0.1- 0.1- 130803 568 0.0 0.0 130906 215 1.4- 0.4- 130715 568 0.0 0.1+ 130803 568 0.1+ 0.2+ 130906 215 1.0- 0.6- 130715 568 0.0 0.0 130803 568 0.0 0.0 131001 Q62 0.5+ 0.1- 130715 568 0.1+ 0.1+ 130804 Q62 0.5+ 0.1+ 131001 Q62 0.5+ 0.0 130801 568 0.1+ 0.2+ 130804 Q62 0.1- 0.3- 131001 Q62 0.4+ 0.6+ 130801 568 0.1+ 0.2+ 130804 Q62 0.7- 0.8- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2013 Nov. 19