Nakano Note (Nakano wa Kangaeru noda) NK 3788 P/2018 V5 (Trujillo-Sheppard)
The following improved orbital elements, by S. Nakano, are from 19 observations 2017 Sept. 28 to 2019 Feb. 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.20 arc second. Epoch = 2018 Oct. 9.0 TT T = 2018 Oct. 3.81049 +/- 0.01552 (m.e.) TT Peri. = 260.80275 +/- 0.00186 Node = 171.32481 +/- 0.00015 (2000.0) Inc. = 10.58003 +/- 0.00002 q = 4.7076315 +/- 0.0000195 AU e = 0.4746383 +/- 0.0000079 a = 8.9607430 +/- 0.0001403 AU n' = 0.03674414 +/- 0.00000086 P = 26.824 +/- 0.0006301 years (+/- 0.23 day) The predicted orbit for the 2045 return is as follows: T = 2045 Aug. 28.50682 TT Epoch = 2045 Sept.17.0 TT Peri. = 260.73038 e = 0.4766585 Node = 171.13392 (2000.0) a = 9.0289590 AU Inc. = 10.56929 n'= 0.03632851 q = 4.7252290 AU P = 27.130 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 171117 F51 0.0 0.3+ 190108 T09 0.1+ 0.0 170928 F51 0.2+ 0.0 171120 F51 0.3- 0.4+ 190125 H06 0.7- 0.2- 170929 F51 0.2- 0.1+ 2018/ 190125 H06 0.2- 0.2+ 170930 F51 0.1- 0.2- 180818 F51 0.1+ 0.1+ 190201 711 0.0 0.3+ 171028 F51 0.1+ 0.0 181106 T09 0.1- 0.1- 190201 711 0.1- 0.2+ 171028 F51 0.0 0.3- 181107 T09 0.0 0.1- 190201 711 0.0 0.0 171028 F51 0.1+ 0.2- 2019/ 171028 F51 0.1+ 0.2- 190108 T09 0.1+ 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Late edition Syuichi Nakano 2019 Feb. 13