Nakano Note (Nakano wa Kangaeru noda) NK 4475 P/2018 VN2 (Leonard)
The following improved orbital elements, by S. Nakano, are from 104 observations 2018 July 2 to Dec. 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.47 arc second. See an orbit in HICQ 2019. Epoch = 2018 June 11.0 TT T = 2018 June 5.37761 +/- 0.00082 (m.e.) TT Peri. = 138.77472 +/- 0.00047 Node = 226.54876 +/- 0.00006 (2000.0) Inc. = 18.24054 +/- 0.00007 q = 2.1226215 +/- 0.0000075 AU e = 0.4775431 +/- 0.0000070 a = 4.0627684 +/- 0.0000564 AU n' = 0.12035690 +/- 0.00000251 P = 8.189 +/- 0.0001704 years (+/- 0.06 day) The predicted orbit for the 2026 return is as follows: T = 2026 Aug. 15.85481 TT Epoch = 2026 Aug. 28.0 TT Peri. = 138.93270 e = 0.4779081 Node = 226.42618 (2000.0) a = 4.0597415 AU Inc. = 18.25562 n'= 0.12049152 q = 2.1195580 AU P = 8.180 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2018/ 181105 I52 (4.5- 0.5+) 181113 F52 0.0 0.0 180702 I41 0.3- 0.5+ 181105 K88 0.1- 0.1+ 181113 F52 0.2+ 0.1- 180702 I41 1.5+ 0.5+ 181105 K88 0.4- 0.4+ 181115 K88 0.2+ 0.3+ 180724 I41 0.2- 0.2- 181105 K88 0.3- 0.7+ 181115 K88 0.3+ 0.5+ 180724 I41 0.4- 0.2+ 181106 I52 0.6+ 0.8+ 181116 K88 0.1+ 0.3+ 180810 I41 0.6- 0.1- 181106 I52 0.1+ 0.3- 181116 K88 0.3- 0.6+ 180810 I41 0.4+ 0.1- 181106 I52 0.1+ 0.5- 181117 703 0.9- 1.1+ 180810 I41 0.8- 0.0 181106 G96 0.5+ 0.3+ 181117 703 (2.2- 0.7+) 180810 I41 0.1- 0.2- 181106 G96 0.1- 0.4+ 181117 703 1.2- 1.1+ 180818 I41 0.5- 0.3+ 181106 G96 0.0 0.2+ 181117 703 1.7- 0.9+ 180818 I41 0.6- 0.1- 181106 G96 0.9- 0.4+ 181117 G96 0.4- 0.0 180827 I41 0.3- 0.3- 181106 F52 0.1+ 0.1- 181117 G96 0.1+ 0.2+ 180827 I41 0.5- 0.2- 181106 F52 0.2+ 0.1- 181117 G96 1.0- 0.4- 180907 I41 0.1+ 0.2+ 181106 F52 0.1+ 0.0 181117 G96 0.4+ 0.3- 180907 I41 0.1+ 0.4+ 181106 F52 0.3+ 0.1- 181117 K88 0.4+ 0.1- 180913 I41 0.4+ 0.3- 181106 P93 0.1+ 0.2- 181117 K88 0.7- 0.4- 180913 I41 0.1+ 0.1+ 181106 P93 (2.1+ 0.1-) 181118 G96 0.0 0.3+ 180926 I41 0.5+ 0.2- 181106 P93 1.8+ 0.3- 181118 G96 0.7- 0.2+ 180926 I41 0.1+ 0.3- 181106 K88 0.3+ 0.4+ 181118 G96 1.0- 0.4+ 181006 I41 0.8+ 0.5- 181106 K88 0.8- 0.3+ 181118 G96 0.8- 0.4+ 181006 I41 0.3+ 0.2- 181106 K88 0.5- 0.6+ 181119 U69 0.9+ 0.3+ 181031 I41 0.9+ 0.1- 181106 K88 0.3- 0.4+ 181119 U69 0.7+ 0.3+ 181031 I41 0.5+ 0.6- 181107 I52 0.5- 0.5- 181130 Q62 0.2- 0.3- 181102 I41 0.3+ 0.3- 181107 I52 0.7- 1.7- 181130 Q62 0.7- 0.1+ 181102 I41 0.1- 0.2- 181107 I52 0.3+ 0.9+ 181130 Q62 0.9- 0.4+ 181103 I41 0.1+ 0.5+ 181107 I52 0.8- 1.2- 181210 D74 1.5- 0.5+ 181103 I41 0.3+ 0.3- 181107 K88 0.1- 0.1+ 181210 D74 0.3+ 0.7+ 181105 G96 1.2- 0.2- 181107 K88 0.4+ 0.5- 181210 D74 0.5- 0.6+ 181105 G96 0.5- 0.3- 181109 G96 0.1- 0.0 181213 G96 0.0 0.1- 181105 G96 0.2+ 0.0 181109 G96 0.2- 0.1+ 181213 G96 0.6+ 0.2- 181105 G96 0.7+ 0.2+ 181109 G96 0.4+ 0.3- 181213 G96 0.1+ 0.1+ 181105 I52 0.6- 0.4+ 181109 G96 0.1+ 0.8- 181213 G96 0.5- 1.3- 181105 I52 0.4- 0.0 181111 703 (2.4- 0.7-) 181213 F51 0.2+ 0.1- 181105 I52 0.6+ 0.2+ 181111 703 1.8- 1.4- 181213 F51 0.1+ 0.0 181105 I52 0.2- 1.0+ 181111 703 1.1- 0.6- 181213 F51 0.0 0.0 181105 I52 0.4- 0.2+ 181111 703 0.3- 1.0+ 181213 F51 0.1+ 0.1- 181105 I52 (2.8- 0.1-) 181113 F52 0.0 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 June 14