Nakano Note (Nakano wa Kangaeru noda) NK 5043 P/2018 A4 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 78 observations 2017 Sept. 27 to 2018 Mar. 28. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.46 arc second. The 2017 observations were reported on 2023 July MPCs. See the previous orbit in HICQ 2019. Epoch = 2018 May 2.0 TT T = 2018 May 18.80423 +/- 0.00118 (m.e.) TT Peri. = 356.13446 +/- 0.00136 Node = 97.63430 +/- 0.00090 (2000.0) Inc. = 3.14807 +/- 0.00005 q = 2.4025815 +/- 0.0000113 AU e = 0.8042808 +/- 0.0000382 a = 12.2756555 +/- 0.0023993 AU n' = 0.02291591 +/- 0.00000672 P = 43.010 +/- 0.0126095 years (+/- 4.61 days) The predicted orbit for the 2061 return is as follows: T = 2061 Jan. 25.25251 TT Epoch = 2061 Jan. 16.0 TT Peri. = 355.65131 e = 0.8063817 Node = 97.53901 (2000.0) a = 12.4904924 AU Inc. = 3.14404 n'= 0.02232722 q = 2.4183878 AU P = 44.144 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 180113 711 0.0 0.2+ 180127 A02 0.1+ 0.5+ 170927 F51 0.5+ 0.0 180113 711 0.3- 0.0 180127 A02 0.2+ 0.1- 170927 F51 0.1- 0.1+ 180113 711 0.3- 0.4+ 180127 A02 0.2+ 0.0 170927 F51 0.3+ 0.1+ 180113 K51 0.0 0.0 180207 U69 0.8+ 0.8+ 170927 F51 0.2+ 0.1+ 180113 K51 0.1+ 0.2+ 180207 U69 0.4+ 0.8+ 171019 F51 0.1- 0.3- 180113 G40 0.1+ 0.4- 180209 703 0.5+ 1.1- 171019 F51 0.2- 0.2- 180113 G40 0.5+ 0.5+ 180209 703 1.8+ 0.6+ 171019 F51 0.1- 0.0 180113 G40 0.3+ 0.5+ 180209 703 (0.1+ 2.4+) 171023 G96 0.3- 0.0 180114 711 0.6- 0.6+ 180213 215 0.2- 0.2+ 171023 G96 1.2- 0.3+ 180114 711 0.6- 0.6+ 180213 215 0.1- 0.3+ 171023 G96 0.8+ 0.6- 180114 711 0.7- 0.7+ 180213 215 0.1+ 0.1+ 171023 G96 0.2+ 0.4- 180114 691 0.9+ 0.2- 180218 Q11 1.0- 1.5- 2018/ 180114 691 0.3- 0.2+ 180218 Q11 1.4- 1.5- 180112 F51 0.2- 0.0 180114 691 0.1- 0.0 180220 Q11 1.4- 0.7- 180112 F51 0.1+ 0.1- 180115 711 0.0 0.2- 180220 Q11 1.5- 0.7- 180112 F51 0.1- 0.0 180115 711 0.2+ 0.0 180225 G96 0.5+ 0.0 180112 F51 0.1+ 0.2+ 180115 711 0.3- 0.2+ 180225 G96 0.6+ 0.7+ 180113 H06 0.1+ 0.2+ 180115 291 0.2- 0.5+ 180225 G96 0.1- 0.1+ 180113 H06 0.1+ 0.2+ 180115 291 0.0 0.4+ 180225 G96 0.1+ 0.0 180113 I52 0.3+ 0.2+ 180115 291 0.1- 0.9+ 180313 Q11 0.4- 0.4+ 180113 I52 0.2- 0.3+ 180115 568 0.0 0.2- 180313 Q11 0.4- 0.3+ 180113 I52 0.4+ 0.5+ 180115 568 0.0 0.2- 180314 Q11 0.7+ 0.8- 180113 I52 0.5+ 0.1+ 180115 568 0.0 0.2- 180314 Q11 0.1- 0.7- 180113 I52 0.2+ 0.1+ 180116 I52 0.7+ 0.1- 180328 G96 0.0 0.3- 180113 I52 0.1- 0.0 180116 I52 0.4- 0.5+ 180328 G96 0.1+ 0.5+ 180113 I52 0.1- 0.2+ 180116 I52 0.0 0.4- 180328 G96 0.2+ 0.2+ 180113 I52 0.2- 0.1+ 180116 I52 0.0 0.1- 180328 G96 0.8+ 0.1+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 Aug. 1