Nakano Note (Nakano wa Kangaeru noda) NK 4971 P/2023 B3 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 82 observations 2019 Sept. 8 to 2023 Mar. 14. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.48 arc second. Prediscovery observations in 2019, 2021 and 2022 have been reported. See an orbit in CBET 5222. Epoch = 2020 Aug. 19.0 TT T = 2020 Aug. 29.68385 +/- 0.03978 (m.e.) TT Peri. = 239.23190 +/- 0.00483 Node = 154.01057 +/- 0.00025 (2000.0) Inc. = 9.16417 +/- 0.00013 q = 3.9804535 +/- 0.0000136 AU e = 0.1223266 +/- 0.0000134 a = 4.5352330 +/- 0.0000707 AU n' = 0.10204804 +/- 0.00000239 P = 9.658 +/- 0.0002258 years (+/- 0.08 day) The predicted orbit for the 2030 return is as follows: T = 2030 May 18.64835 TT Epoch = 2030 May 19.0 TT Peri. = 239.62398 e = 0.1214958 Node = 153.95003 (2000.0) a = 4.5612827 AU Inc. = 9.15245 n'= 0.10117509 q = 4.0071060 AU P = 9.742 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 230126 K93 0.3+ 0.2- 230212 G96 0.2- 0.0 190908 W84 0.6+ 0.2- 230127 K93 0.1- 0.2+ 230212 G96 0.4- 0.1+ 191002 W84 0.6- 0.3+ 230127 K93 0.5- 0.0 230212 G96 0.4+ 1.3+ 2021/ 230127 K93 0.3- 0.2- 230214 W62 0.6+ 0.1- 211113 I41 0.3+ 0.6- 230130 A77 0.6- 1.6+ 230214 W62 0.6+ 0.1+ 211202 I41 0.4- 0.9+ 230130 A77 0.5- 0.8+ 230214 W62 0.6+ 0.1- 211202 I41 0.2+ 0.4- 230130 L01 1.7- 0.3+ 230214 246 0.0 0.1- 2022/ 230131 L01 1.1- 0.3- 230214 246 0.1- 0.6+ 221201 I41 0.9- 0.2- 230131 L01 0.3- 0.4- 230214 246 0.1+ 0.5- 221217 I41 0.8- 0.0 230131 L01 0.5- 0.3+ 230214 246 0.7+ 0.2- 221222 I41 0.1+ 0.5- 230131 587 0.3- 0.1+ 230214 246 0.8- 0.3- 221222 I41 0.1+ 0.0 230131 587 0.3- 0.0 230215 246 0.3- 0.0 221224 I41 0.7+ 0.6- 230202 291 0.6- 0.3+ 230215 246 0.3+ 0.4- 2023/ 230202 291 0.4- 0.4+ 230215 246 0.5- 0.1- 230123 F52 0.1+ 0.0 230202 291 0.6- 0.4+ 230215 246 0.6+ 0.1- 230123 F52 0.1+ 0.0 230209 291 1.1- 0.0 230215 C82 1.0+ 0.5- 230123 F52 0.1+ 0.0 230209 291 0.8- 0.5+ 230215 C82 0.2- 0.5- 230123 F52 0.2- 0.0 230209 291 0.5- 0.0 230215 204 0.0 0.1- 230123 K91 0.2- 0.0 230210 V00 0.0 0.0 230215 204 0.1- 0.2- 230123 K91 0.2- 0.0 230210 V00 0.1- 0.1- 230217 Q21 (1.6- 3.0-) 230123 K91 0.3- 0.0 230210 V00 0.0 0.1- 230217 Q21 (1.7+ 3.0-) 230123 K91 0.0 0.2- 230210 V00 0.1+ 0.2+ 230220 215 1.4- 0.1+ 230124 T14 0.2+ 0.1- 230211 658 0.2+ 0.1+ 230220 215 0.6- 0.4- 230124 T14 0.2+ 0.1- 230211 658 0.2+ 0.2+ 230220 215 0.4- 0.4- 230124 T14 0.2+ 0.0 230211 658 0.2+ 0.1+ 230227 D29 0.3+ 0.4+ 230125 691 0.0 0.3- 230211 658 0.3+ 0.1+ 230227 D29 0.1+ 0.5- 230125 691 0.0 0.2- 230211 658 0.4+ 0.1+ 230227 D29 0.1- 1.0- 230125 691 0.4- 0.0 230211 595 0.3- 0.2+ 230314 903 1.7- 1.5- 230126 Q62 0.2- 0.2- 230211 595 0.4- 0.5+ 230314 903 (3.8- 1.6-) 230126 Q62 0.6- 0.1- 230212 G96 0.4- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 Mar. 31