Nakano Note (Nakano wa Kangaeru noda) NK 4918 C/2022 J2 (Bok)

The following improved orbital elements, by S. Nakano, are from 129 observations 2022 May 9 to 2023 Jan. 8. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.59 arc second. The comet will pass 1.93 AU from Jupiter on 2023 Aug. 12 and 4.54 AU from Saturn on 2025 Apr. 17 UT. See the previous orbits in CBET 5143, NK 4842 and NK 4884 (= CH 2023). Epoch = 2022 Oct. 28.0 TT T = 2022 Oct. 27.06657 +/- 0.00026 (m.e.) TT Peri. = 133.06670 +/- 0.00013 Node = 252.55881 +/- 0.00003 (2000.0) Inc. = 149.09245 +/- 0.00002 q = 1.8275630 +/- 0.0000015 AU e = 0.9801500 +/- 0.0000075 1/a = +0.0108615 +/- 0.0000041 1/AU origin = +0.011845 (Q= 8) future = +0.011085 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2022/ 220623 568 0.2+ 0.2- 221126 T08 0.7+ 0.2+ 220509 V00 0.6- 0.4- 220623 568 0.1+ 0.2- 221126 T08 0.6+ 0.2- 220509 V00 0.4+ 0.7- 220626 568 0.2+ 0.1- 221127 215 0.6+ 0.3- 220509 V00 0.3+ 0.1+ 220626 568 0.2+ 0.1- 221127 215 0.5+ 0.2- 220509 V00 0.1+ 0.2+ 221021 H06 1.0- 0.3+ 221127 215 0.4+ 0.0 220509 V00 0.1+ 0.3- 221021 H06 0.6- 0.3+ 221129 I81 1.2- 0.5+ 220509 V00 0.3- 0.6- 221026 H06 0.0 0.7- 221129 I81 0.2+ 0.6- 220509 V00 0.1- 0.7- 221026 H06 0.1+ 0.5- 221129 I81 0.0 0.0 220509 V00 0.1+ 0.0 221026 H06 0.1- 0.1- 221129 703 0.0 0.1+ 220509 G96 0.1- 0.5+ 221029 703 (0.4- 2.1+) 221129 703 0.8- 1.0- 220509 G96 0.1- 0.8- 221029 703 0.0 0.7+ 221129 703 0.2- 0.7+ 220509 291 0.4- 0.2- 221029 703 0.1- 0.3+ 221129 703 1.0- 0.1+ 220509 291 0.6- 0.3- 221107 F51 0.6+ 0.3- 221202 703 0.7- 0.7+ 220510 568 0.1- 0.2- 221107 F51 0.3+ 0.0 221202 703 0.6- 0.2+ 220510 568 0.3+ 0.7- 221107 F51 0.8+ 0.2- 221202 703 0.2+ 1.0- 220510 568 0.1+ 0.2- 221107 F51 0.7+ 0.3- 221202 703 0.7+ 0.0 220510 568 0.2+ 0.2+ 221112 C51 1.2+ 1.4- 221212 G00 0.5+ 0.6+ 220510 568 0.3- 0.1- 221112 C51 (3.2+ 1.1-) 221212 G00 0.4+ 0.5+ 220510 291 0.2+ 0.1- 221112 C51 1.1+ 1.7+ 221212 G00 0.4+ 0.8- 220510 291 1.1+ 0.1- 221112 C51 (3.0+ 1.4-) 221212 G00 0.1+ 1.2- 220511 291 0.1- 0.2- 221112 G96 0.6- 0.2+ 221212 G00 0.3+ 0.6- 220511 291 0.0 0.0 221112 G96 0.6- 0.4- 221215 C23 1.1+ 1.0+ 220512 291 0.2+ 0.2- 221112 C51 0.1+ 1.3- 221215 C23 0.3+ 0.2+ 220512 291 0.0 0.6+ 221112 C51 (1.8- 2.6+) 221215 C23 0.4+ 1.0- 220518 695 0.0 0.1+ 221119 A77 1.7- 1.3+ 221215 C23 0.2- 0.6+ 220518 695 0.6+ 0.6- 221119 A77 1.6- 1.5+ 221219 G40 0.2+ 0.1+ 220519 291 0.4+ 0.7+ 221119 A77 0.6- 1.1+ 221219 G40 0.4+ 0.3- 220519 291 0.6+ 0.9+ 221120 703 0.5- 0.1+ 221222 Z45 0.3+ 0.0 220520 658 0.3- 1.0+ 221120 703 0.4- 0.4+ 221222 Z45 0.1+ 0.3+ 220520 658 0.3- 0.7+ 221120 703 1.6- 1.0- 221222 Z45 0.9+ 0.5- 220520 658 0.1+ 0.6+ 221121 I81 0.5- 0.2+ 221224 A77 1.7- 0.8- 220520 658 0.3- 0.3+ 221121 I81 0.5+ 0.0 221224 A77 1.7- 0.3- 220520 658 0.4- 0.1- 221123 I81 0.0 0.1- 221224 A77 1.2- 1.0- 220523 V06 0.2- 0.2- 221123 I81 0.1+ 0.2- 221226 B96 1.3- 0.1- 220523 V06 0.2- 0.4- 221123 T14 1.0+ 0.3- 221226 B96 1.0- 0.2- 220523 V06 0.1- 0.2- 221123 T14 1.0+ 0.4- 221226 C23 0.3- 0.7+ 220523 V06 0.3- 0.1- 221125 G96 0.1+ 0.1+ 221226 C23 0.5- 0.5- 220524 658 0.3+ 0.9+ 221125 G96 0.2+ 0.2- 221226 C23 0.6+ 0.3+ 220524 658 0.2+ 0.8+ 221125 G96 0.0 0.1- 221226 C23 1.1+ 0.1+ 220524 658 0.2+ 1.0+ 221125 G96 0.5+ 0.3+ 221227 Z10 0.4+ 0.0 220524 291 0.5+ 0.4+ 221126 703 0.6+ 0.4- 221227 Z10 0.1- 0.3+ 220524 291 0.9+ 0.0 221126 703 0.1+ 1.3+ 2023/ 220525 568 0.0 0.1- 221126 703 1.3- 1.1+ 230108 F51 0.1+ 0.3- 220525 568 0.0 0.1- 221126 T08 0.1- 0.8- 230108 F51 0.0 0.2+ 220525 568 0.1- 0.1- 221126 T08 1.2+ 0.4+ 230108 F51 0.2- 0.1- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2023 Jan. 29

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