Nakano Note (Nakano wa Kangaeru noda) NK 4643 C/2021 V1 (Rankin)

The following improved orbital elements, by S. Nakano, are from 63 observations 2021 Oct. 2 to 2022 Jan. 22. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.51 arc second. See an orbit in CBET 5067. Epoch = 2022 Apr. 11.0 TT T = 2022 Apr. 30.39479 +/- 0.00595 (m.e.) TT Peri. = 195.11417 +/- 0.00186 Node = 207.65190 +/- 0.00031 (2000.0) Inc. = 71.44969 +/- 0.00049 q = 3.0133570 +/- 0.0000509 AU e = 0.9954994 +/- 0.0000505 1/a = +0.0014935 +/- 0.0000168 1/AU origin = +0.002312 (Q= 7) future = +0.001929 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 211105 C95 0.1+ 0.6+ 211109 W62 0.1+ 0.6+ 211002 G96 0.2- 0.2+ 211105 C95 0.9+ 0.2+ 211109 W62 0.2- 0.5+ 211002 G96 0.2- 0.4+ 211105 C95 0.3+ 0.3- 211110 215 0.6+ 0.4+ 211002 G96 0.3+ 0.1- 211106 858 0.2- 0.2- 211110 215 0.7+ 0.3- 211020 F51 0.3- 0.2+ 211106 858 0.6- 0.3+ 211110 215 0.2+ 1.0- 211021 F52 0.5- 0.1- 211106 H06 0.6+ 0.1- 211201 X03 0.5- 1.2+ 211021 F52 0.4- 0.4+ 211106 H06 0.2+ 0.3- 211201 X03 0.5+ 1.5+ 211021 F52 0.1+ 0.5+ 211106 H06 0.1+ 0.2- 211201 X03 (2.7+ 0.3-) 211024 G96 0.6+ 0.5- 211106 J57 0.6- 0.8- 211201 X03 1.8+ 1.2- 211024 G96 0.1+ 0.1- 211106 J57 0.4- 0.6+ 211201 X03 (1.3+ 2.2-) 211024 G96 0.0 0.0 211106 J57 0.5- 0.8- 211209 G96 0.4- 1.5+ 211024 G96 0.1+ 1.1+ 211106 G02 0.1+ 0.1- 211209 G96 0.7+ 0.5+ 211029 F51 0.1- 0.2- 211106 G02 0.3+ 0.1+ 211209 G96 0.6- 0.4+ 211029 F51 0.2- 0.1- 211107 L01 0.7+ 0.5- 211209 G96 0.4- 0.3+ 211029 F51 0.1- 0.3- 211107 L01 0.6- 0.2+ 2022/ 211029 F51 0.2- 0.4- 211107 L01 0.0 0.5- 220105 568 0.1- 0.3- 211105 G96 0.1- 0.0 211107 L01 0.8- 0.1+ 220105 568 0.2- 0.2- 211105 G96 0.2+ 0.0 211107 L01 0.4- 0.1+ 220122 G96 1.3+ 0.7+ 211105 G96 0.1- 0.4- 211107 Z28 0.0 0.5- 220122 G96 0.2+ 0.2+ 211105 I52 0.7+ 0.0 211107 Z28 0.1- 0.3- 220122 G96 0.5+ 0.4+ 211105 I52 0.0 0.2+ 211107 Z28 0.2+ 0.2- 220122 G96 0.3+ 0.9+ 211105 I52 0.0 0.1- 211107 Z28 0.2- 0.1- 211105 I52 0.2+ 0.4- 211108 W62 0.1- 0.5+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2022 Feb. 13

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