Nakano Note (Nakano wa Kangaeru noda) NK 3902 P/2018 P5 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 57 observations 2018 June 16 to 2019 Sept. 23. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.36 arc second. Residuals on 2019 September observations were +14" for Right Ascension and +3" for Declination from an orbit in HICQ 2019. Epoch = 2019 Mar. 18.0 TT T = 2019 Feb. 26.26062 +/- 0.01512 (m.e.) TT Peri. = 131.63931 +/- 0.00193 Node = 216.24148 +/- 0.00036 (2000.0) Inc. = 7.25684 +/- 0.00002 q = 4.5758923 +/- 0.0000063 AU e = 0.6409600 +/- 0.0000072 a = 12.7447966 +/- 0.0002585 AU n' = 0.02166231 +/- 0.00000066 P = 45.499 +/- 0.0013854 years (+/- 0.51 day) The predicted orbit for the 2064 return is as follows: T = 2064 Oct. 14.88130 TT Epoch = 2064 Oct. 7.0 TT Peri. = 131.87173 e = 0.6421981 Node = 216.14827 (2000.0) a = 12.7591892 AU Inc. = 7.27003 n'= 0.02162566 q = 4.5652627 AU P = 45.576 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2018/ 180815 F65 1.1- 0.6- 180905 A71 0.3- 0.8- 180616 F51 0.2- 0.1- 180815 F65 0.7- 0.1- 180905 215 0.4- 1.0- 180616 F51 0.1+ 0.0 180816 807 0.2- 0.1- 180905 215 0.4- 0.9- 180623 F51 0.0 0.0 180816 807 0.1- 0.1- 180905 215 0.4- 1.1- 180623 F51 0.2+ 0.1- 180816 807 0.3- 0.2- 180907 G96 0.4+ 0.5+ 180623 F51 0.1+ 0.0 180816 Q62 0.0 0.4+ 180907 G96 0.1+ 0.1- 180623 F51 0.1- 0.1- 180816 Q62 0.3- 0.4+ 180907 G96 0.0 0.4+ 180713 F51 0.1+ 0.2+ 180816 Q62 0.4- 0.6+ 180907 G96 0.2- 0.2- 180713 F51 0.2+ 0.0 180816 L01 0.4- 0.5+ 180908 K77 0.6+ 1.8+ 180713 F51 0.0 0.1- 180816 L01 0.5- 0.3- 180908 K77 1.9+ 1.8+ 180713 F51 0.1- 0.0 180816 104 0.3+ 0.3+ 181008 461 0.1+ 0.7+ 180811 F51 0.1- 0.0 180817 104 0.8+ 0.8+ 181008 461 0.3- 0.3+ 180811 F51 0.1- 0.1+ 180817 104 0.2+ 0.6- 2019/ 180811 F51 0.0 0.0 180817 K88 0.1- 0.0 190710 G96 0.4+ 0.2- 180811 F51 0.0 0.1- 180817 K88 0.2- 0.3+ 190710 G96 0.6- 0.6+ 180812 568 0.1+ 0.0 180818 F51 0.0 0.0 190710 G96 0.2- 0.4- 180812 568 0.0 0.0 180818 F51 0.1- 0.1- 190710 G96 0.0 0.2+ 180812 568 0.1+ 0.0 180818 F51 0.1+ 0.0 190923 H06 0.1+ 0.3- 180815 F65 0.3- 0.0 180818 F51 0.1+ 0.1+ 190923 H06 0.3+ 0.5- 180815 F65 1.0- 0.5- 180905 A71 0.4- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 Oct. 1