Nakano Note (Nakano wa Kangaeru noda) NK 4774 C/2021 R2 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 103 observations 2021 Aug. 28 to 2022 June 29. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.47 arc second. The comet has passed 3.62 AU from Jupiter on 2022 Jan. 30 UT. See an orbit in CBET 5031. Epoch = 2021 Dec. 12.0 TT T = 2021 Dec. 25.26820 +/- 0.04995 (m.e.) TT Peri. = 32.31810 +/- 0.00357 Node = 16.28512 +/- 0.00012 (2000.0) Inc. = 134.47279 +/- 0.00017 q = 7.3119405 +/- 0.0000367 AU e = 0.9974997 +/- 0.0000268 1/a = +0.0003419 +/- 0.0000037 1/AU origin = +0.000453 (Q= 8) future = +0.000509 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 210907 L27 1.2+ 0.7+ 211011 F51 0.4- 0.1+ 210828 F51 0.0 0.0 210907 L27 0.8+ 0.7+ 211011 F51 0.3- 0.2+ 210828 F51 0.1+ 0.1- 210907 L27 0.7+ 1.1+ 211027 G96 0.1+ 0.1+ 210828 F51 0.1- 0.2- 210908 G40 0.1+ 0.1- 211027 G96 0.4+ 0.1+ 210903 F51 0.4+ 0.4- 210908 G40 0.3+ 0.2- 211027 G96 0.5+ 0.3+ 210903 F51 0.6+ 0.2- 210911 F51 0.1- 0.0 211027 G96 0.5+ 0.3+ 210903 F51 0.1+ 0.1+ 210911 F51 0.1- 0.1- 211027 213 0.7- 0.2+ 210903 F51 0.3+ 0.1- 210911 F51 0.2- 0.1+ 211027 213 0.8- 1.0+ 210905 F52 0.1+ 0.0 210911 F51 0.3- 0.0 211027 213 0.0 1.2+ 210905 F52 0.1+ 0.1- 210917 G96 0.3+ 0.1+ 211030 X03 0.8+ 0.0 210905 F52 0.1- 0.0 210917 G96 0.8+ 0.3- 211030 X03 0.0 0.2+ 210905 F51 0.2- 0.1- 210917 G96 0.5+ 0.4- 211030 X03 0.7- 0.6+ 210905 F51 0.2- 0.0 210917 G96 0.4+ 0.4+ 211107 F51 0.1- 0.2+ 210905 246 0.5- 1.2- 210926 D29 0.9+ 0.4+ 211107 F51 0.3- 0.1+ 210905 C82 0.4- 0.8- 210926 D29 0.6+ 0.0 211107 F51 0.3- 0.3+ 210905 246 0.2- 1.6- 210926 D29 0.2- 0.1- 211107 F51 0.2- 0.2+ 210905 246 0.7- 0.7- 210930 215 0.1+ 0.4- 211108 G96 0.5- 0.3+ 210905 C82 1.2- 0.9- 210930 215 0.1- 0.5- 211108 G96 0.1- 0.9+ 210905 A71 0.3+ 0.6- 210930 215 0.4+ 0.0 211108 G96 1.1+ 0.5+ 210905 A71 0.4+ 0.6- 211004 F51 0.3- 0.3+ 211108 G96 0.1+ 0.5+ 210905 A71 0.6+ 0.8- 211004 F51 0.3- 0.2+ 2022/ 210905 A71 0.0 0.7- 211004 F51 0.3- 0.1+ 220606 G96 0.1+ 0.1+ 210905 157 0.3- 1.3- 211004 F51 0.3- 0.1+ 220606 G96 0.5+ 0.4- 210905 157 0.1+ 0.0 211004 B96 1.0- 0.4- 220606 G96 0.1+ 0.2+ 210906 L01 0.3- 0.3+ 211004 B96 (2.8- 1.7+) 220606 G96 0.0 0.1- 210906 L01 0.5+ 0.4- 211006 F51 0.2- 0.2+ 220626 W62 0.8+ 0.8+ 210906 L01 0.0 0.7- 211006 F51 0.3- 0.1+ 220626 W62 (2.3+ 0.8+) 210906 568 0.5- 0.0 211006 F51 0.1- 0.2+ 220626 W62 0.7+ 0.8+ 210906 568 0.5- 0.0 211006 F51 0.1- 0.1+ 220626 215 0.4+ 0.8+ 210906 568 0.4- 0.0 211006 F51 0.2- 0.1+ 220626 215 0.7- 0.2+ 210906 587 0.3+ 0.1+ 211006 F51 0.3- 0.2+ 220626 215 0.5- 1.5- 210906 587 0.5+ 0.4+ 211006 F51 0.1- 0.0 220629 G96 0.3- 0.2- 210906 587 0.5+ 0.4+ 211008 568 0.4- 0.1+ 220629 G96 0.0 0.1- 210907 858 0.2- 0.2- 211008 568 0.4- 0.0 220629 G96 0.1+ 0.2+ 210907 858 0.5- 1.1+ 211011 F51 0.3- 0.2+ 220629 G96 0.4- 0.0 210907 858 0.1+ 0.6+ 211011 F51 0.3- 0.2+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 July 12