Nakano Note (Nakano wa Kangaeru noda) NK 4593 P/2021 P3 (PANSTARRS)

The following improved orbital elements, by S. Nakano, are from 92 observations 2021 Aug. 3 to Nov. 7. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.52 arc second. See an orbit in CBET 5022. Epoch = 2021 May 26.0 TT T = 2021 May 31.29923 +/- 0.01455 (m.e.) TT Peri. = 334.28872 +/- 0.00321 Node = 358.24276 +/- 0.00004 (2000.0) Inc. = 27.14665 +/- 0.00104 q = 2.9163675 +/- 0.0000558 AU e = 0.3408855 +/- 0.0000155 a = 4.4246752 +/- 0.0001343 AU n' = 0.10589659 +/- 0.00000482 P = 9.307 +/- 0.0004238 years (+/- 0.15 day) The predicted orbit for the 2030 return is as follows: T = 2030 Aug. 28.89246 TT Epoch = 2030 Sept.16.0 TT Peri. = 334.56830 e = 0.3427314 Node = 358.21405 (2000.0) a = 4.3910561 AU Inc. = 27.20504 n'= 0.10711508 q = 2.8861032 AU P = 9.201 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 210815 L01 0.1- 1.2+ 210924 G96 0.0 0.2+ 210803 F51 0.1- 0.4+ 210815 K51 0.4+ 0.1- 210924 G96 0.6- 0.0 210803 F51 0.1+ 0.3+ 210815 L01 0.2+ 0.4+ 210924 G96 0.0 0.1- 210803 F51 0.0 0.6+ 210815 E94 (3.1+ 1.8-) 210925 F51 0.4- 0.4+ 210803 F51 0.1- 0.5+ 210815 E94 0.9- 0.7- 210925 F51 0.3- 0.5+ 210811 F51 0.2- 0.3+ 210901 215 0.5+ 0.0 210925 F51 0.4- 0.3+ 210811 F51 0.1+ 0.0 210901 215 0.3+ 0.0 210925 F51 0.3- 0.4+ 210811 F51 0.1+ 0.6+ 210901 215 0.2+ 0.1- 210929 D29 (0.0 2.2-) 210812 J04 0.1+ 0.0 210905 F51 0.1- 0.5+ 210929 D29 0.2+ 0.8- 210812 J04 0.1- 0.2+ 210905 F51 0.1- 0.5+ 210929 D29 0.2- 1.0- 210812 J04 0.2+ 0.4+ 210905 F51 0.1- 0.5+ 210930 F52 0.6- 0.4+ 210812 J04 0.2+ 0.1+ 210905 F51 0.2- 0.5+ 210930 F52 0.4- 0.1+ 210812 568 0.1- 0.7+ 210905 E94 0.6- 0.0 210930 F52 0.4- 0.4+ 210812 568 0.2- 0.6+ 210905 E94 0.6- 0.6+ 211004 D29 0.5+ 1.6- 210812 568 0.1- 0.6+ 210905 E94 0.0 0.1+ 211004 D29 0.2+ 1.9- 210812 Q62 0.6+ 0.3- 210905 E94 0.4- 1.1- 211004 D29 0.6+ 0.6- 210812 Q62 0.4+ 0.3- 210907 X03 0.1- 0.2+ 211007 703 1.6+ 0.7- 210812 Q62 0.6+ 0.4- 210907 X03 0.0 0.5- 211007 703 0.1- 0.9- 210813 E94 0.7- 0.2- 210907 X03 0.0 0.4- 211007 703 1.0- 0.1- 210813 E94 0.3+ 0.4- 210907 X03 0.9+ 0.8- 211010 G96 0.2+ 0.2- 210813 E94 0.1+ 0.4+ 210909 F51 0.2- 0.6+ 211010 G96 0.2+ 0.2- 210813 E94 0.2+ 1.1+ 210909 F51 0.3- 0.6+ 211010 G96 0.1+ 0.7- 210813 E94 0.2+ 0.2+ 210909 F51 0.1- 0.5+ 211010 G96 0.1+ 0.5- 210813 E94 (0.8+ 2.2+) 210909 F51 0.3- 0.6+ 211101 F52 0.0 0.0 210813 C10 (5.5+ 95.3-) 210911 G96 0.2- 0.1+ 211101 F52 0.0 0.2+ 210813 C10 0.5- 0.3- 210911 G96 0.1- 0.0 211101 F52 0.3+ 0.1+ 210813 C10 0.5- 0.3- 210911 G96 0.1- 0.3+ 211101 F52 0.2- 0.0 210815 C10 0.6+ 0.2- 210911 G96 0.0 0.0 211107 F52 0.2- 0.4+ 210815 C10 0.4+ 0.5- 210914 703 0.3+ 1.7- 211107 F52 0.0 0.0 210815 C10 0.2+ 1.0- 210914 703 0.1- 0.9- 211107 F52 0.3+ 0.1- 210815 K51 0.1+ 0.1- 210914 703 0.3- 1.8- 211107 F52 0.1- 0.1+ 210815 L01 0.9+ 0.2+ 210914 703 1.4- 1.5- 210815 K51 0.1+ 0.4+ 210924 G96 0.1+ 0.1- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2022 Jan. 4

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