Nakano Note (Nakano wa Kangaeru noda) NK 4377 C/2020 K7 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 76 observations 2020 May 30 to Nov. 18. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.41 arc second. The comet has passed 1.79 AU from Jupiter on 2019 Dec. 18 and 3.65 AU from Saturn on 2020 Feb. 26 UT. Epoch = 2019 Nov. 13.0 TT T = 2019 Oct. 27.39942 +/- 0.10722 (m.e.) TT Peri. = 357.98391 +/- 0.00998 Node = 286.11195 +/- 0.00028 (2000.0) Inc. = 32.05711 +/- 0.00043 q = 6.3822325 +/- 0.0001793 AU e = 0.9477047 +/- 0.0000943 1/a = +0.0081939 +/- 0.0000148 1/AU a = 122.0 AU P = 1348 years origin = +0.008703 (Q= 7) future = +0.010778 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 200615 F52 0.2+ 0.1- 200723 F52 0.2+ 0.0 200530 F51 0.1+ 0.2- 200620 F52 0.4+ 0.1- 200723 F52 0.1+ 0.0 200530 F51 0.1+ 0.0 200620 F52 0.2+ 0.1- 200723 F52 0.2+ 0.1- 200530 F51 0.1+ 0.3- 200620 F52 0.1- 0.1+ 200723 F52 0.3+ 0.0 200530 F51 0.2+ 0.0 200622 F51 0.1+ 0.3+ 200811 T08 1.2- 0.1+ 200531 850 1.1- 0.4+ 200622 F51 0.1+ 0.0 200811 T08 0.5+ 0.3- 200531 850 0.9- 0.4+ 200622 F51 0.3+ 0.0 200811 T08 0.1+ 1.0+ 200531 850 0.5- 0.3+ 200622 F51 0.0 0.0 200811 T08 0.6- 0.2+ 200531 H06 0.4- 0.1- 200627 F51 0.0 0.0 200816 D29 0.0 0.1- 200531 H06 0.2- 0.4- 200627 F51 0.5- 0.3+ 200816 D29 0.2- 0.3- 200531 H06 0.3- 0.3- 200627 F51 0.0 0.1- 200816 D29 0.2- 0.0 200601 850 1.0- 0.4+ 200627 F51 0.3- 0.1+ 200817 D29 0.3- 0.2+ 200601 850 0.0 0.1+ 200628 T08 0.8- 0.6- 200817 D29 0.4- 0.1- 200601 850 0.2+ 0.1+ 200628 T08 1.2- 0.2- 200817 D29 0.6- 0.1+ 200601 I52 0.2- 0.1- 200628 T08 1.1- 0.2- 201118 G96 0.0 0.2- 200601 I52 0.3- 0.4+ 200628 T08 1.1- 0.1+ 201118 G96 0.4+ 0.1+ 200601 I52 0.6- 0.0 200628 T08 0.6- 1.1- 201118 G96 0.1- 0.6- 200601 L01 0.5- 0.1+ 200628 T08 0.5- 0.7- 201118 G96 0.2+ 0.4- 200602 L01 0.6- 0.7+ 200709 215 0.7- 0.2+ 201118 K61 0.4- 0.4+ 200602 L01 0.1- 0.1- 200709 215 0.9- 0.7- 201118 K61 0.6- 0.4+ 200602 L01 0.7- 0.6- 200709 215 0.8- 0.5+ 201118 K61 0.4- 0.2+ 200602 X02 0.3- 0.0 200719 F51 0.2+ 0.0 201118 L01 0.3+ 0.2- 200602 X02 0.3- 0.0 200719 F51 0.0 0.1+ 201118 L01 0.1+ 0.0 200602 850 0.5- 0.7+ 200719 F51 0.2+ 0.1- 201118 L01 0.1- 0.3- 200602 850 (3.0- 0.7+) 200719 F51 0.1- 0.1+ 201118 L01 0.1+ 0.1- 200615 F52 0.1- 0.1- 200721 K77 0.4+ 0.8+ 200615 F52 0.1+ 0.2+ 200721 K77 (2.1- 0.5+) ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Jan. 29