Nakano Note (Nakano wa Kangaeru noda) NK 3541 P/2017 R1 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 64 observations 2017 July 30 to 2018 Jan. 6. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.38 arc second. See an orbit in HICQ 2018. Epoch = 2017 Mar. 28.0 TT T = 2017 Apr. 8.18423 +/- 0.07292 (m.e.) TT Peri. = 178.37506 +/- 0.01368 Node = 143.65319 +/- 0.00057 (2000.0) Inc. = 2.57341 +/- 0.00006 q = 3.3273383 +/- 0.0000712 AU e = 0.1945669 +/- 0.0000331 a = 4.1311168 +/- 0.0001916 AU n' = 0.11738237 +/- 0.00000817 P = 8.397 +/- 0.0005842 years (+/- 0.21 day) The predicted orbit for the 2025 return is as follows: T = 2025 Sept. 9.46852 TT Epoch = 2025 Sept. 2.0 TT Peri. = 178.85933 e = 0.1945769 Node = 143.59121 (2000.0) a = 4.1318509 AU Inc. = 2.57486 n'= 0.11735109 q = 3.3278880 AU P = 8.399 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 170914 F51 0.2- 0.0 170918 691 1.2- 0.0 170730 F51 0.2- 0.0 170914 F51 0.1+ 0.0 170918 691 1.2- 0.3+ 170730 F51 0.1- 0.1+ 170914 F51 0.1+ 0.0 170918 I52 0.2+ 0.2+ 170730 F51 0.3- 0.1+ 170915 I52 0.4- 0.9+ 170918 I52 0.6- 0.3+ 170730 F51 0.1- 0.1+ 170915 I52 0.3+ 0.7+ 170918 I52 0.5- 0.4- 170801 F51 0.4+ 0.2- 170915 I52 0.7- 0.1- 170918 I52 1.2- 0.5+ 170801 F51 0.3+ 0.1+ 170915 W85 0.1+ 0.3- 170919 691 1.7- 0.4- 170801 F51 0.0 0.1+ 170915 W85 0.1+ 0.5- 170919 691 0.1- 0.4+ 170801 F51 0.3+ 0.1- 170915 W85 0.2+ 0.4- 170919 691 0.3- 0.4- 170803 F51 0.2- 0.0 170915 W85 0.0 0.4- 170919 I52 0.2+ 0.3- 170803 F51 0.3- 0.2- 170915 W85 0.5+ 0.3- 170919 I52 0.1+ 0.1- 170803 F51 0.1- 0.0 170915 568 0.2+ 0.1- 170919 I52 0.3- 0.4- 170803 F51 0.2- 0.2+ 170915 568 0.2+ 0.0 170919 I52 0.4- 0.3- 170817 F51 0.3+ 0.0 170915 568 0.2+ 0.0 170928 F51 0.2+ 0.0 170817 F51 0.1+ 0.2+ 170915 Q62 0.6- 0.0 170928 F51 0.0 0.2+ 170817 F51 0.1+ 0.0 170915 Q62 0.4- 0.2+ 170928 F51 0.0 0.1+ 170817 F51 0.1+ 0.0 170915 Q62 0.1- 0.3+ 171014 215 0.4- 0.7+ 170902 G96 0.2- 0.2+ 170917 F51 0.0 0.0 171014 215 0.1- 0.0 170902 G96 0.5- 0.1- 170917 F51 0.1+ 0.1- 171014 215 0.0 0.5- 170902 G96 0.6- 0.6- 170917 F51 0.0 0.2- 2018/ 170902 G96 0.7- 0.2- 170917 F51 0.1- 0.2- 180106 F51 0.2- 0.1- 170914 F51 0.0 0.2+ 170918 691 1.1- 0.4- 180106 F51 0.1+ 0.2+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2018 Feb. 6