Nakano Note (Nakano wa Kangaeru noda) NK 5523 A/2025 A1
The following improved orbital elements, by S. Nakano, are from 88 observations 2024 Oct. 28 to 2025 Dec. 22. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.33 arc second. 2025 December observations show the residuals of -20" for Right Ascension and -23" for Declination from an unpublished orbit during 2024 Oct. 28-2025 Feb. 1. The comet will pass 2.03 AU from Jupiter on 2026 Jan. 22 UT. Epoch = 2027 Mar. 16.0 TT T = 2027 Mar. 15.82227 +/- 0.00592 (m.e.) TT Peri. = 68.45567 +/- 0.00131 Node = 101.27238 +/- 0.00002 (2000.0) Inc. = 33.38842 +/- 0.00006 q = 5.3350013 +/- 0.0000882 AU e = 0.9976975 +/- 0.0000260 1/a = +0.0004316 +/- 0.0000049 1/AU origin = +0.000139 (Q= 8) future = +0.001698 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2024/ 250104 104 0.6- 0.8- 251002 V00 0.1- 0.1- 241028 G96 0.0 0.5+ 250104 H21 0.1+ 0.2+ 251029 O18 0.1- 0.1- 241028 G96 0.0 0.1+ 250104 H21 0.0 0.1+ 251029 O18 0.1- 0.0 241028 G96 0.3- 0.1- 250104 H21 0.1- 0.2+ 251121 Q14 (2.3- 0.0 ) 241028 G96 0.5- 0.2- 250104 T14 0.1- 0.1- 251121 Q14 1.5+ 0.2+ 241102 F52 0.1+ 0.1+ 250104 T14 0.0 0.1- 251121 D29 0.0 0.0 241102 F52 0.0 0.0 250104 T14 0.1- 0.1- 251121 D29 0.2- 0.0 241102 F52 0.0 0.0 250104 T14 0.1- 0.1- 251121 D29 0.0 0.2- 241102 F52 0.1+ 0.0 250104 T14 0.1- 0.1- 251129 Q21 0.7- 0.0 241114 G96 0.4- 0.1- 250104 T14 0.1- 0.1- 251129 Q21 0.7- 0.3+ 241114 G96 0.1+ 0.5- 250104 T14 0.1- 0.1- 251213 F51 0.1- 0.1+ 241114 G96 0.7+ 0.1+ 250104 T14 0.1- 0.1- 251213 F51 0.1- 0.1+ 241127 F52 0.0 0.1- 250104 T14 0.1- 0.1- 251213 F51 0.0 0.0 241127 F52 0.0 0.1+ 250104 L01 0.5+ 0.4+ 251213 F51 0.0 0.1+ 241127 F52 0.1+ 0.1+ 250104 L01 0.5- 0.5- 251217 G96 0.1+ 0.1+ 241127 F52 0.0 0.0 250104 L01 0.2+ 0.0 251217 G96 0.1+ 0.1- 241220 V00 0.0 0.1- 250104 L01 0.2- 0.9- 251217 G96 0.1- 0.0 241220 V00 0.1- 0.1+ 250104 Z28 0.3- 0.1+ 251217 G96 0.1+ 0.0 241220 V00 0.0 0.0 250104 Z28 0.2- 0.1+ 251217 F52 0.0 0.0 241220 V00 0.1- 0.0 250106 X03 0.7+ 0.4+ 251217 F52 0.1- 0.1+ 2025/ 250106 X03 0.3+ 0.3- 251217 F52 0.0 0.1- 250102 G96 0.2- 0.1- 250106 X03 0.3+ 0.7+ 251217 F52 0.0 0.0 250102 G96 0.3- 0.2- 250117 213 (3.3+ 0.2+) 251217 T05 0.8+ 0.6- 250102 G96 0.2+ 0.3- 250117 213 1.1+ 0.4+ 251217 T05 0.0 0.4+ 250102 G96 0.3+ 0.0 250121 215 0.5- 0.8+ 251217 T05 0.1+ 0.6+ 250102 G96 0.1+ 0.0 250121 215 0.1- 0.9- 251217 T05 0.7- 0.0 250102 G96 0.0 0.1- 250201 B50 (1.8+ 2.3+) 251222 T05 0.3+ 0.0 250102 G96 0.0 0.0 250201 B50 0.3- 1.4+ 251222 T05 0.7+ 0.1+ 250102 G96 0.1- 0.2- 250201 B50 (1.4- 4.3+) 251222 T05 0.5- 0.3- 250103 K83 0.4+ 0.5- 251002 V00 0.0 0.1- 251222 T05 0.1- 0.6- 250103 K83 0.2- 0.3- 251002 V00 0.1- 0.0 250104 104 0.1- 0.2- 251002 V00 0.1- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 Jan. 7