Nakano Note (Nakano wa Kangaeru noda) NK 4208 P/PANSTARRS (2013 PA104 = 2020 R1)
The following improved orbital elements, by S. Nakano, are from 84 observations 2013 to 2020. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.30 arc second. See an orbit in CBET 4845 ( same orbit). Epoch = 2014 Apr. 13.0 TT T = 2014 May 1.67396 +/- 0.00011 (m.e.) TT Peri. = 238.02363 +/- 0.00003 Node = 177.17734 +/- 0.00003 (2000.0) Inc. = 10.90618 +/- 0.00001 q = 2.1727895 +/- 0.0000002 AU e = 0.3962548 +/- 0.0000001 a = 3.5988518 +/- 0.0000005 AU n' = 0.14436374 +/- 0.00000003 P = 6.827 +/- 0.0000015 years T = 2021 Feb. 10.09073 TT Epoch = 2021 Jan. 26.0 TT Peri. = 238.78385 e = 0.4089994 Node = 176.39799 (2000.0) a = 3.5589568 AU Inc. = 10.92919 n'= 0.14679795 q = 2.1033457 AU P = 6.714 years The predicted orbit for the 2027 return is as follows: T = 2027 Nov. 3.37973 TT Epoch = 2027 Nov. 11.0 TT Peri. = 239.00528 e = 0.4090423 Node = 176.31565 (2000.0) a = 3.5602616 AU Inc. = 10.92761 n'= 0.14671726 q = 2.1039640 AU P = 6.718 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2013/ 150319 F51 0.1- 0.1+ 200813 F52 0.0 0.1+ 130815 F51 0.2- 0.0 150319 F51 0.0 0.0 200813 F52 0.1+ 0.3+ 130815 F51 0.1- 0.0 150319 F51 0.1+ 0.1+ 200813 F52 0.1+ 0.3+ 130815 F51 0.1- 0.1- 2016/ 200813 F52 0.2+ 0.0 130815 F51 0.1- 0.1+ 160310 F51 0.1- 0.2- 200818 F51 0.5+ 0.4- 130902 G96 0.2- 0.4+ 160310 F51 0.4+ 0.4- 200818 F51 0.1+ 0.0 130902 G96 0.2- 0.3+ 160402 F51 0.1+ 0.0 200818 D29 0.6- 0.1+ 130902 G96 0.3- 0.4+ 160402 F51 0.2+ 0.2+ 200818 D29 0.4- 0.0 130902 G96 0.8- 0.2+ 160402 F51 0.1- 0.2+ 200818 D29 0.6- 0.2+ 131108 G96 1.0+ 0.6- 160402 F51 0.2- 0.2+ 200829 F52 0.1- 0.1- 131108 G96 1.1+ 0.2+ 160402 F51 0.1+ 0.0 200829 F52 0.2- 0.1+ 131108 G96 0.2+ 0.1+ 160409 F51 0.5+ 0.3+ 200829 F52 0.1+ 0.1+ 131108 G96 0.9- 0.6+ 160410 F51 0.0 0.1- 200907 D29 0.9- 1.0+ 131230 F51 0.2+ 0.0 160410 F51 0.0 0.1- 200907 D29 0.3+ 1.1+ 131230 F51 0.3+ 0.2+ 160410 F51 0.0 0.0 200907 D29 0.1+ 0.3+ 131230 F51 0.3+ 0.2+ 160410 F51 0.4- 0.1+ 200909 F51 0.1+ 0.0 2014/ 2020/ 200909 F51 0.0 0.1+ 141130 F51 0.3- 0.0 200601 F51 0.0 0.0 200909 F51 0.1+ 0.0 141130 F51 0.2- 0.6- 200601 F51 0.1- 0.0 200909 F51 0.1+ 0.0 141202 F51 0.1+ 0.2- 200601 F51 0.5- 0.1+ 200910 G96 0.1- 0.0 2015/ 200728 F52 0.0 0.2- 200910 G96 0.1- 0.1+ 150115 F51 0.0 0.1+ 200728 F52 0.1+ 0.2- 200910 G96 0.4- 0.1- 150115 F51 0.0 0.0 200728 F52 0.1+ 0.3- 200910 G96 0.2- 0.1- 150115 F51 0.1- 0.0 200728 F52 0.2- 0.2- 200910 I52 0.0 0.1+ 150115 F51 0.2- 0.1+ 200730 F51 0.4+ 0.4+ 200910 I52 0.4+ 0.1+ 150117 F51 0.1+ 0.2+ 200730 F51 0.3+ 0.1- 200910 I52 0.2- 0.1- 150117 F51 0.2+ 0.2+ 200731 F52 0.1- 0.0 200910 I52 0.1- 0.1- 150117 F51 0.0 0.2+ 200731 F52 0.1- 0.2+ 200911 Q62 0.4- 0.2- 150117 F51 0.2+ 0.1+ 200731 F52 0.1+ 0.0 200911 Q62 0.6- 0.1- 150319 F51 0.0 0.1- 200812 F51 0.0 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2020 Sept. 13