Nakano Note (Nakano wa Kangaeru noda) NK 4384 P/2020 S5 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 74 observations 2020 Aug. 26 to Dec. 16. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.42 arc second. See an orbit in CBET 4864. Epoch = 2020 Aug. 19.0 TT T = 2020 Aug. 8.35234 +/- 0.01757 (m.e.) TT Peri. = 53.00981 +/- 0.00518 Node = 315.99813 +/- 0.00065 (2000.0) Inc. = 12.35390 +/- 0.00009 q = 2.6786646 +/- 0.0000215 AU e = 0.3382725 +/- 0.0000118 a = 4.0479877 +/- 0.0000791 AU n' = 0.12101670 +/- 0.00000355 P = 8.144 +/- 0.0002387 years (+/- 0.09 day) The predicted orbit for the 2028 return is as follows: T = 2028 Oct. 11.17454 TT Epoch = 2028 Sept.26.0 TT Peri. = 53.17388 e = 0.3368145 Node = 315.93604 (2000.0) a = 4.0636619 AU Inc. = 12.33437 n'= 0.12031720 q = 2.6949617 AU P = 8.192 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200927 204 0.5- 0.6- 201017 F52 0.1- 0.1+ 200826 G96 0.4+ 0.1+ 200927 204 0.7- 0.1+ 201017 F52 0.1+ 0.1- 200826 G96 1.1+ 0.4+ 200927 F51 0.2+ 0.1+ 201017 F52 0.1+ 0.2+ 200918 G96 0.2- 0.3- 200927 F51 0.1+ 0.1+ 201019 215 0.3- 0.5- 200918 G96 0.6- 0.1+ 200927 F51 0.2+ 0.1+ 201019 215 0.0 0.4- 200918 G96 0.0 1.1- 200927 F51 0.1+ 0.1+ 201019 215 0.3+ 0.3- 200918 G96 0.1- 0.3- 200927 F51 0.1+ 0.0 201023 F52 0.1- 0.3+ 200921 F51 0.3- 0.3- 200927 F51 0.2+ 0.1+ 201023 F52 0.2+ 0.0 200921 F51 0.2+ 0.1+ 200927 F51 0.1+ 0.1+ 201023 F52 0.0 0.1+ 200921 F51 0.2- 0.2- 201009 941 0.5+ 0.0 201023 F52 0.0 0.1+ 200921 F51 0.0 0.0 201009 941 0.0 0.0 201027 G96 0.2- 0.3- 200923 I52 0.1+ 0.2- 201009 941 0.3- 0.2+ 201027 G96 0.9- 0.7- 200923 I52 0.1+ 0.0 201012 F51 0.1+ 0.1- 201027 G96 0.2- 0.3- 200923 I52 0.4- 0.3- 201012 F51 0.1+ 0.1- 201027 G96 0.1- 0.2+ 200924 L01 0.2+ 0.3+ 201012 F51 0.2+ 0.1+ 201106 D29 0.0 0.7- 200924 L01 0.1- 0.2- 201012 F51 0.1+ 0.0 201106 D29 0.1- 0.2- 200924 L01 0.1- 0.3- 201013 G96 0.1+ 0.1- 201106 D29 0.2+ 0.4- 200925 H06 1.0- 0.4- 201013 G96 0.1- 0.2- 201206 T08 0.7+ 0.4+ 200925 H06 1.0- 0.3- 201013 G96 0.0 0.3- 201206 T08 0.1- 0.1+ 200925 H06 0.8- 0.4- 201013 G96 0.1- 0.0 201206 T08 0.2+ 1.4- 200926 F51 0.1+ 0.2+ 201016 941 1.1- 0.5- 201206 T08 0.0 0.1+ 200926 F51 0.1+ 0.1+ 201016 941 1.2- 0.7- 201216 G96 0.1+ 0.2+ 200926 F51 0.1- 0.1- 201016 941 1.4- 1.1- 201216 G96 0.2+ 0.1+ 200926 F51 0.2- 0.0 201016 941 1.4- 1.1- 201216 G96 0.5- 0.3+ 200927 204 0.3- 0.3- 201017 F52 0.1+ 0.0 201216 G96 0.3- 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Jan. 29