Nakano Note (Nakano wa Kangaeru noda) NK 4948 P/2020 V3 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 130 observations 2017 Sept. 16 to 2023 Feb. 24. 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. Observations on 2023 March show the residual of +29" mainly for Right ascension from a orbit in NK 4436 (= CH 2023). The one night observations on 2017 and 2019/2020 were reported later. See the previous orbits in CBET 4888, NK 4392 and NK 4436. Epoch = 2021 Jan. 26.0 TT T = 2021 Feb. 7.67617 +/- 0.00497 (m.e.) TT Peri. = 249.24380 +/- 0.00037 Node = 198.28837 +/- 0.00007 (2000.0) Inc. = 23.03333 +/- 0.00002 q = 6.2303857 +/- 0.0000063 AU e = 0.2548305 +/- 0.0000083 a = 8.3610311 +/- 0.0000937 AU n' = 0.04076752 +/- 0.00000068 P = 24.176 +/- 0.0004071 years (+/- 0.15 day) The predicted orbit for the 2045 return is as follows: T = 2045 May 23.61587 TT Epoch = 2045 May 20.0 TT Peri. = 249.25425 e = 0.2587139 Node = 198.15239 (2000.0) a = 8.4000417 AU Inc. = 23.00570 n'= 0.04048386 q = 6.2268343 AU P = 24.346 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2017/ 201116 I52 0.0 0.0 201125 246 (6.5+ 1.8+) 170916 T14 0.1- 0.2+ 201116 I52 0.1- 0.4+ 201125 246 (6.2+ 2.0+) 2019/ 201117 711 1.0+ 1.2- 201209 F51 0.3+ 0.1- 191214 W84 0.1+ 0.1- 201117 711 0.2- 0.0 201209 F51 0.2+ 0.2- 191215 W84 0.1+ 0.1- 201117 711 0.0 0.1- 201209 F51 0.3+ 0.0 2020/ 201117 E94 0.5- 0.4+ 201209 F51 0.3+ 0.1- 200205 W84 0.1+ 0.0 201117 E94 0.6- 0.2+ 201212 F52 0.7+ 0.4+ 201017 G96 0.0 0.7+ 201117 E94 0.1+ 0.6+ 201212 F52 0.1+ 0.2- 201110 F51 0.4+ 0.1- 201118 711 0.3- 0.1+ 201212 F52 0.3+ 0.2+ 201110 F51 0.3+ 0.0 201118 711 0.2- 0.2- 201212 F52 0.0 0.3- 201110 F51 0.1+ 0.2- 201118 711 0.1+ 0.2- 2021/ 201111 I52 0.0 0.2+ 201118 L01 0.3+ 0.0 210105 F51 0.4+ 0.1- 201111 I52 0.2- 0.3- 201118 L01 0.2+ 0.1+ 210105 F51 0.3+ 0.0 201111 I52 0.1+ 0.1+ 201118 L01 0.2- 0.8+ 210105 F51 0.3+ 0.0 201111 568 0.3+ 0.1- 201118 246 0.7+ 0.6+ 210105 F51 0.3+ 0.2- 201111 568 0.3+ 0.1- 201118 246 0.0 0.6- 210113 F52 0.0 0.1+ 201111 568 0.3+ 0.1- 201118 246 0.4+ 0.2+ 210113 F52 0.0 0.0 201111 568 0.3+ 0.2- 201118 L01 0.4+ 0.1- 210113 F52 0.4+ 0.0 201111 568 0.3+ 0.1- 201118 L01 0.7+ 0.7+ 210203 Q62 0.4+ 0.2+ 201111 568 0.2+ 0.0 201118 K61 0.3- 0.3+ 210203 Q62 0.7+ 0.1+ 201111 N51 0.3+ 0.2- 201118 K61 0.3- 0.0 210213 215 1.1- 0.0 201111 N51 0.1- 0.2- 201120 691 0.4- 0.3- 210213 215 0.8- 0.0 201111 N51 0.0 0.1- 201120 691 0.2- 0.3- 210213 215 1.0- 1.0+ 201111 N51 0.0 0.2- 201121 691 0.8- 0.0 210311 474 0.3+ 0.2- 201111 N51 0.1+ 0.2- 201121 691 0.1- 0.0 210311 474 0.2- 0.2- 201111 N51 0.1+ 0.1- 201121 691 0.7- 0.1+ 210311 474 0.6+ 0.1- 201111 N51 0.1+ 0.2- 201121 587 0.6- 0.7+ 2022/ 201111 N51 0.1+ 0.3- 201121 587 0.3- 0.8+ 221201 F51 0.1- 0.5+ 201111 N51 0.3+ 0.4- 201121 215 0.5- 0.7+ 221201 F51 0.0 0.3- 201111 N51 0.2+ 0.4- 201121 587 0.4- 0.9+ 221201 F51 0.2- 0.4+ 201111 N51 0.2+ 0.4- 201121 215 0.6- 0.3+ 221201 F51 0.1- 0.4- 201111 N51 0.3+ 0.4- 201121 215 1.3- 0.3- 2023/ 201112 H06 0.9- 0.0 201121 246 1.5+ 0.6- 230125 F52 0.2+ 0.2+ 201112 H06 0.7- 0.2- 201121 246 0.7+ 0.4+ 230125 F52 0.2- 0.0 201114 I52 1.0+ 0.0 201121 246 0.7+ 1.1+ 230125 F52 0.3+ 0.2- 201114 I52 0.4- 0.4+ 201121 246 0.5- 1.4+ 230125 F52 0.0 0.1- 201114 I52 0.6- 0.4+ 201122 691 0.3+ 0.4- 230125 F52 0.7+ 0.1- 201114 I52 1.4- 0.6+ 201122 691 0.2+ 0.0 230125 F52 0.5- 0.1+ 201114 246 0.4+ 1.1- 201123 691 0.2+ 0.3- 230125 F52 0.1+ 0.0 201114 246 0.3- 1.0- 201123 691 0.1+ 0.2- 230125 F52 0.1- 0.1+ 201114 246 0.3- 0.5- 201125 G96 0.4- 0.2+ 230126 G96 0.0 0.2+ 201114 246 0.5- 0.5- 201125 G96 0.2- 0.1+ 230126 G96 0.0 0.1- 201115 I52 0.4+ 0.0 201125 G96 0.3- 0.1+ 230126 G96 0.3- 0.2+ 201115 I52 0.1- 0.3- 201125 G96 0.1+ 0.1- 230126 G96 0.0 0.1- 201115 I52 0.1- 0.4+ 201125 246 (6.7+ 1.9+) 230224 X03 0.2+ 0.5- 201115 I52 0.8- 0.4- 201125 246 (6.5+ 1.3+) 230224 X03 0.5- 0.1- 201116 I52 0.2- 0.8- 201125 246 (6.5+ 1.6+) 230224 X03 0.4+ 0.4+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 Mar. 26