Nakano Note (Nakano wa Kangaeru noda) NK 3177 P/2016 A7 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 43 observations 2016 Jan. 14 to June 7. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.41 arc second. See an orbit in HICQ 2016. Epoch = 2016 Feb. 22.0 TT T = 2016 Feb. 25.86477 +/- 0.00112 (m.e.) TT Peri. = 352.47036 +/- 0.00041 Node = 221.46613 +/- 0.00004 (2000.0) Inc. = 16.63704 +/- 0.00004 q = 2.1766368 +/- 0.0000033 AU e = 0.5666294 +/- 0.0000062 a = 5.0225759 +/- 0.0000144 AU n' = 0.08756173 +/- 0.00000038 P = 11.256 +/- 0.0000485 years The predicted orbit for the 2027 return is as follows: T = 2027 May 27.82923 TT Epoch = 2027 June 4.0 TT Peri. = 353.36416 e = 0.5676421 Node = 219.67964 (2000.0) a = 5.0733268 AU Inc. = 16.11056 n'= 0.08625113 q = 2.1934930 AU P = 11.427 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2016/ 160122 H01 0.7- 0.5- 160506 215 1.6- 0.4+ 160114 F51 0.0 0.2- 160122 H01 0.3- 0.2+ 160506 215 1.4- 0.3+ 160114 F51 0.2+ 0.1- 160122 H01 0.1- 0.0 160506 215 1.1- 0.3+ 160114 F51 0.2- 0.0 160212 Q62 0.4+ 0.3+ 160513 G45 0.6- 0.2+ 160114 F51 0.1+ 0.0 160212 Q62 0.3+ 0.6+ 160513 G45 0.4+ 0.5+ 160115 W86 0.1- 0.2+ 160212 Q62 0.0 0.3+ 160513 G45 0.4- 0.2+ 160115 W86 0.4- 0.1+ 160213 568 0.0 0.2+ 160513 G45 0.6- 0.2+ 160115 W86 0.3- 0.4+ 160213 568 0.0 0.2+ 160513 G45 0.4- 0.1+ 160118 Q62 0.4+ 1.2- 160213 568 0.0 0.2+ 160605 F51 0.1- 0.2- 160118 Q62 0.0 1.0- 160405 F51 0.0 0.1- 160605 F51 0.2- 0.0 160118 Q62 0.2+ 0.6- 160405 F51 0.2+ 0.1- 160605 F51 0.1+ 0.3- 160120 W86 0.0 0.1- 160502 F51 0.0 0.3- 160607 F51 0.1+ 0.2+ 160120 W86 0.1- 0.2+ 160502 F51 0.0 0.1+ 160607 F51 0.2+ 0.1- 160120 W86 0.1+ 0.3+ 160502 F51 0.2+ 0.2- 160607 F51 0.0 0.6+ 160122 H01 0.5- 0.1- 160502 F51 0.1+ 0.0 ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2016 July 7

Back to Nakano Note Page