Nakano Note (Nakano wa Kangaeru noda) NK 5190 C/2021 X2 (Bok)
The following improved orbital elements, by S. Nakano, are from 94 observations 2021 Oct. 30 to 2022 Nov. 23. 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. The comet has passed 2.57 AU from Jupiter on 2022 Oct. 28 UT. See the previous orbits in NK 4661, NK 4807 and CBET 5363 (same orbit). Epoch = 2022 June 30.0 TT T = 2022 July 8.15660 +/- 0.00061 (m.e.) TT Peri. = 193.28399 +/- 0.00014 Node = 228.79820 +/- 0.00003 (2000.0) Inc. = 137.14414 +/- 0.00004 q = 2.9945481 +/- 0.0000037 AU e = 1.0013243 +/- 0.0000107 1/a = -0.0004422 +/- 0.0000036 1/AU origin = +0.000022 (Q= 8) future = -0.000252 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2021/ 220101 215 0.5+ 0.1- 220824 D35 0.7+ 1.2+ 211030 F51 0.1- 0.2- 220113 695 0.0 0.2+ 220908 F52 0.3- 0.1- 211030 F51 0.2- 0.1- 220113 695 0.1- 0.1- 220908 F52 0.1- 0.1- 211030 F51 0.1+ 0.0 220113 695 0.4- 0.2- 220908 F52 0.1+ 0.0 211030 F51 0.2- 0.1+ 220115 695 0.3+ 0.1+ 220921 215 1.2- 0.3- 211108 F52 0.1+ 0.0 220115 695 0.1+ 0.1+ 220921 215 0.9- 0.3+ 211108 F52 0.1+ 0.5- 220115 695 0.0 0.1+ 220921 215 0.2- 0.5+ 211201 V00 0.1+ 0.1- 220118 695 0.0 0.1- 220923 F52 0.3- 0.7- 211201 V00 0.0 0.0 220118 695 0.0 0.2- 220923 F52 0.1+ 0.0 211201 V00 0.2+ 0.4+ 220205 568 0.2- 0.3- 220923 F52 0.2- 0.4- 211201 V00 0.1- 0.1- 220205 568 0.1- 0.1- 220923 F52 0.0 0.1- 211201 V06 0.3- 0.1- 220205 568 0.1- 0.2- 221002 G96 0.5+ 0.3+ 211201 V06 0.2- 0.3- 220725 568 0.1- 0.2- 221002 G96 0.0 0.3+ 211201 679 0.4- 0.4+ 220725 568 0.1- 0.2- 221002 G96 0.1+ 1.1+ 211202 V06 0.3- 0.3- 220725 568 0.0 0.2- 221002 G96 0.2+ 0.2+ 211202 V06 0.2- 0.2- 220809 Q62 0.3- 0.1+ 221002 F51 0.1- 0.6- 211207 V06 0.3+ 0.3- 220809 Q62 0.5- 0.3- 221002 F51 0.0 0.5- 211207 V06 0.0 0.5+ 220809 D35 0.8+ 0.3+ 221002 F51 0.1+ 0.5- 211207 V06 0.3+ 0.3- 220809 D35 1.0+ 1.1+ 221002 F51 0.1+ 0.5- 211212 H06 0.4+ 0.7+ 220809 D35 0.3+ 1.1+ 221003 G96 0.2+ 0.5+ 211212 H06 0.1- 0.7+ 220820 D35 1.1+ 1.0+ 221003 G96 0.3- 0.6+ 211212 Z84 0.3+ 0.3- 220820 D35 0.9+ 1.3+ 221003 G96 0.1+ 0.2+ 211212 Z84 0.3+ 0.1- 220820 D35 0.2+ 1.4+ 221003 G96 0.2- 0.5+ 211212 Z84 0.2+ 0.1- 220820 D35 (0.6+ 2.2+) 221020 W76 0.9- 0.5- 211218 695 0.1+ 0.3+ 220820 D35 0.9+ 1.6+ 221020 W76 0.7- 0.4- 211218 695 0.0 0.1+ 220821 D35 0.2+ 1.0+ 221020 W76 0.5- 0.6- 211218 695 0.0 0.3- 220821 D35 0.5+ 1.3+ 221118 Q62 0.3+ 0.9- 211220 695 0.1- 0.0 220821 D35 0.7+ 1.4+ 221118 Q62 0.7+ 0.5- 211220 695 0.1- 0.0 220823 568 0.2- 0.6- 221123 T14 0.5- 0.7- 211220 695 0.1- 0.1- 220823 568 0.0 0.1- 221123 T14 0.6- 0.7- 2022/ 220823 568 0.2- 0.4- 221123 T14 0.6- 0.7- 220101 215 0.4- 0.9+ 220824 D35 0.8+ 1.7+ 220101 215 0.2+ 0.3+ 220824 D35 0.6+ 1.7+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2024 Mar. 2