Nakano Note (Nakano wa Kangaeru noda) NK 4392 P/2020 V3 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 96 observations 2020 Oct. 17 to 2021 Jan. 5. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.45 arc second. See an orbit in CBET 4888. Epoch = 2021 Jan. 26.0 TT T = 2021 Feb. 8.81764 +/- 0.82576 (m.e.) TT Peri. = 249.32499 +/- 0.05990 Node = 198.28829 +/- 0.00282 (2000.0) Inc. = 23.03341 +/- 0.00063 q = 6.2303967 +/- 0.0002357 AU e = 0.2548747 +/- 0.0000727 a = 8.3615427 +/- 0.0008746 AU n' = 0.04076378 +/- 0.00000640 P = 24.179 +/- 0.0037937 years (+/- 1.39 days) The predicted orbit for the 2045 return is as follows: T = 2045 May 25.59479 TT Epoch = 2045 May 20.0 TT Peri. = 249.33466 e = 0.2587594 Node = 198.15228 (2000.0) a = 8.4005850 AU Inc. = 23.00576 n'= 0.04047993 q = 6.2268542 AU P = 24.348 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2020/ 201114 246 0.5- 0.5- 201121 587 0.4- 0.9+ 201017 G96 0.3+ 0.9+ 201115 I52 0.4+ 0.1+ 201121 215 0.7- 0.3+ 201110 F51 0.5+ 0.1- 201115 I52 0.1- 0.3- 201121 215 1.4- 0.3- 201110 F51 0.4+ 0.0 201115 I52 0.1- 0.5+ 201121 246 1.4+ 0.6- 201110 F51 0.1+ 0.2- 201115 I52 0.8- 0.4- 201121 246 0.6+ 0.4+ 201111 I52 0.1+ 0.3+ 201116 I52 0.2- 0.8- 201121 246 0.6+ 1.1+ 201111 I52 0.1- 0.3- 201116 I52 0.0 0.0 201121 246 0.6- 1.4+ 201111 I52 0.1+ 0.2+ 201116 I52 0.1- 0.5+ 201122 691 0.2+ 0.4- 201111 568 0.4+ 0.1- 201117 711 1.0+ 1.2- 201122 691 0.1+ 0.1+ 201111 568 0.4+ 0.0 201117 711 0.2- 0.1+ 201123 691 0.1+ 0.3- 201111 568 0.4+ 0.1- 201117 711 0.1- 0.1- 201123 691 0.0 0.2- 201111 568 0.4+ 0.1- 201117 E94 0.5- 0.4+ 201125 G96 0.6- 0.2+ 201111 568 0.4+ 0.1- 201117 E94 0.6- 0.3+ 201125 G96 0.3- 0.1+ 201111 568 0.2+ 0.0 201117 E94 0.1+ 0.6+ 201125 G96 0.4- 0.1+ 201111 N51 0.4+ 0.1- 201118 711 0.3- 0.1+ 201125 G96 0.1- 0.1- 201111 N51 0.0 0.1- 201118 711 0.2- 0.1- 201125 246 (6.6+ 1.9+) 201111 N51 0.0 0.0 201118 711 0.1+ 0.2- 201125 246 (6.4+ 1.3+) 201111 N51 0.0 0.1- 201118 L01 0.3+ 0.1+ 201125 246 (6.4+ 1.7+) 201111 N51 0.2+ 0.1- 201118 L01 0.1+ 0.1+ 201125 246 (6.3+ 1.8+) 201111 N51 0.2+ 0.1- 201118 L01 0.2- 0.8+ 201125 246 (6.1+ 2.0+) 201111 N51 0.1+ 0.2- 201118 246 0.6+ 0.6+ 201209 F51 0.1+ 0.0 201111 N51 0.2+ 0.3- 201118 246 0.0 0.6- 201209 F51 0.0 0.2- 201111 N51 0.3+ 0.4- 201118 246 0.4+ 0.2+ 201209 F51 0.0 0.1- 201111 N51 0.3+ 0.3- 201118 L01 0.4+ 0.1- 201209 F51 0.2+ 0.1- 201111 N51 0.2+ 0.3- 201118 L01 0.7+ 0.7+ 201212 F52 0.5+ 0.4+ 201111 N51 0.3+ 0.3- 201118 K61 0.4- 0.3+ 201212 F52 0.2- 0.1- 201112 H06 0.8- 0.1+ 201118 K61 0.3- 0.1+ 201212 F52 0.1+ 0.2+ 201112 H06 0.7- 0.2- 201120 691 0.5- 0.3- 201212 F52 0.2- 0.3- 201114 I52 1.0+ 0.0 201120 691 0.2- 0.3- 2021/ 201114 I52 0.4- 0.4+ 201121 691 0.8- 0.1+ 210105 F51 0.0 0.0 201114 I52 0.5- 0.4+ 201121 691 0.2- 0.0 210105 F51 0.1- 0.0 201114 I52 1.4- 0.6+ 201121 691 0.8- 0.1+ 210105 F51 0.1- 0.1+ 201114 246 0.4+ 1.0- 201121 587 0.7- 0.7+ 210105 F51 0.0 0.1- 201114 246 0.2- 1.0- 201121 587 0.4- 0.8+ 201114 246 0.3- 0.5- 201121 215 0.6- 0.7+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 Jan. 29

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