Nakano Note (Nakano wa Kangaeru noda) NK 4408 P/2015 A3 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 57 observations 2015 Jan. 8 to June 12. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.34 arc second. Epoch = 2015 Feb. 27.0 TT T = 2015 Feb. 22.87715 +/- 0.00060 (m.e.) TT Peri. = 249.62101 +/- 0.00023 Node = 277.07513 +/- 0.00009 (2000.0) Inc. = 172.51048 +/- 0.00006 q = 1.1528955 +/- 0.0000092 AU e = 0.8457949 +/- 0.0000332 a = 7.4763788 +/- 0.0016096 AU n' = 0.04821333 +/- 0.00001556 P = 20.443 +/- 0.0066029 years (+/- 2.41 days) The predicted orbit for the 2035 return is as follows: T = 2035 June 7.18394 TT Epoch = 2035 June 2.0 TT Peri. = 249.72884 e = 0.8442994 Node = 277.33969 (2000.0) a = 7.4463999 AU Inc. = 172.53349 n'= 0.04850478 q = 1.1594087 AU P = 20.320 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 150120 568 0.3- 0.0 150611 568 0.5- 0.1- 150108 F51 0.1- 0.1+ 150120 568 0.0 0.0 150611 568 0.4+ 0.1+ 150108 F51 0.0 0.2- 150120 568 0.1- 0.1+ 150611 568 0.2- 0.2- 150108 F51 0.1+ 0.1+ 150120 568 0.1- 0.0 150611 568 0.6- 0.3- 150110 F51 0.1+ 0.1+ 150120 568 0.1- 0.0 150611 568 0.3- 0.2- 150110 F51 0.5- 0.1- 150121 H06 0.8- 0.1- 150611 568 0.3+ 0.3+ 150110 F51 0.2+ 0.1+ 150121 H06 0.8- 0.3- 150611 568 0.2+ 0.5+ 150110 F51 0.0 0.0 150121 568 0.1- 0.1- 150611 568 0.1+ 0.1+ 150111 291 0.7+ 0.6+ 150121 568 0.0 0.1- 150611 568 0.1+ 0.0 150111 291 0.2- 0.3+ 150121 568 0.0 0.1- 150612 568 0.0 0.1+ 150111 291 1.1+ 0.4+ 150121 568 0.0 0.1- 150612 568 0.4+ 0.2+ 150118 568 0.0 0.2- 150123 568 0.1+ 0.1- 150612 568 0.6+ 0.1+ 150118 568 0.0 0.1- 150123 568 0.2+ 0.0 150612 568 0.2- 0.1- 150118 568 0.1+ 0.0 150124 H01 0.1- 0.0 150612 568 0.0 0.1+ 150119 568 0.1+ 0.0 150124 H01 0.1- 0.1+ 150612 568 0.0 0.1- 150119 568 0.0 0.0 150124 H01 0.0 0.1+ 150612 568 0.2- 0.0 150119 568 0.1+ 0.1- 150611 568 0.5+ 0.2+ 150612 568 0.3- 0.0 150120 291 1.5+ 1.0+ 150611 568 0.1+ 0.1+ 150612 568 0.1- 0.0 150120 291 0.5+ 0.3+ 150611 568 0.4- 0.2- 150120 291 1.1+ 0.8+ 150611 568 0.0 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Mar. 19