Nakano Note (Nakano wa Kangaeru noda) NK 3845 P/2019 A5 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 46 observations 2019 Jan. 4 to May 6. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.25 arc second. Epoch = 2019 June 6.0 TT T = 2019 June 9.38172 +/- 0.04931 (m.e.) TT Peri. = 356.03447 +/- 0.00402 Node = 146.61929 +/- 0.00017 (2000.0) Inc. = 67.53636 +/- 0.00065 q = 6.3242161 +/- 0.0000573 AU e = 0.7079237 +/- 0.0000208 a = 21.6526166 +/- 0.0015524 AU n' = 0.00978224 +/- 0.00000105 P = 100.755 +/- 0.0108357 years (+/- 3.96 days) The predicted orbit for the 2119 return is as follows: T = 2119 June 10.50651 TT Epoch = 2119 June 2.0 TT Peri. = 355.78411 e = 0.7095241 Node = 146.49372 (2000.0) a = 21.7996079 AU Inc. = 67.49476 n'= 0.00968347 q = 6.3322605 AU P = 101.782 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 190116 Q62 0.1+ 0.3- 190228 G96 0.1- 0.7- 190104 F51 0.4- 0.2+ 190117 691 0.2+ 0.4- 190228 G96 0.6- 0.1- 190104 F51 0.1+ 0.1- 190117 691 0.2+ 0.2+ 190309 568 0.0 0.0 190104 F51 0.2+ 0.0 190117 691 0.1+ 0.0 190309 568 0.0 0.0 190104 F51 0.0 0.1+ 190117 I52 0.2+ 0.4+ 190309 568 0.0 0.0 190113 F51 0.0 0.2- 190117 I52 0.1+ 0.1- 190328 F51 0.2+ 0.2+ 190113 F51 0.0 0.1- 190117 I52 0.5- 0.7- 190328 F51 0.1+ 0.2+ 190113 F51 0.0 0.1+ 190205 461 0.3- 0.1- 190328 F51 0.0 0.1+ 190113 F51 0.1+ 0.1- 190205 461 0.3- 0.0 190404 568 0.0 0.1+ 190114 568 0.0 0.0 190205 461 0.1+ 0.1+ 190404 568 0.0 0.1+ 190114 568 0.0 0.0 190212 G96 0.2+ 0.7- 190404 F51 0.0 0.0 190114 568 0.0 0.1+ 190212 G96 0.1+ 0.6- 190404 F51 0.2- 0.1- 190115 568 0.1+ 0.1+ 190212 G96 0.4- 0.2- 190404 F51 0.2+ 0.1- 190115 568 0.0 0.1+ 190212 G96 0.1+ 0.7- 190506 N50 0.1- 0.3- 190115 568 0.0 0.1+ 190228 G96 0.6- 0.2- 190506 N50 0.0 0.1+ 190116 Q62 0.1- 0.4+ 190228 G96 0.0 0.8- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 June 10