Nakano Note (Nakano wa Kangaeru noda) NK 5490 C/2025 V2 (Rankin)
The following improved orbital elements, by S. Nakano, are from 69 observations 2024 Nov. 29 to 2025 Nov. 19. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.44 arc seconds. The comet will pass 2.37 AU from Jupiter on 2026 Mar. 8 UT. See an orbit in CBET 5639 (same orbit). Epoch = 2027 Mar. 16.0 TT T = 2027 Mar. 23.06832 +/- 0.02945 (m.e.) TT Peri. = 102.80902 +/- 0.00075 Node = 138.08735 +/- 0.00023 (2000.0) Inc. = 37.30667 +/- 0.00049 q = 1.9497416 +/- 0.0001098 AU e = 0.9998791 +/- 0.0000446 1/a = +0.0000620 +/- 0.0000229 1/AU origin = -0.000001 (Q= 7) future = -0.000086 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2024/ 250227 F51 0.1- 0.2- 251105 W05 0.1+ 0.1+ 241129 F52 0.1+ 0.1- 250227 F51 0.8- 0.0 251106 204 (3.4- 0.1+) 241129 F52 0.2- 0.3- 250227 F51 0.0 0.1+ 251108 I52 0.2+ 0.1+ 241129 F52 0.0 0.0 250227 F51 0.1+ 0.1- 251108 I52 0.0 0.3- 241129 F52 0.0 0.1- 251101 I41 0.4- 0.5- 251108 I52 0.3- 0.7+ 241129 F52 0.1+ 0.2- 251102 G96 0.0 0.1+ 251108 I52 0.5+ 0.1- 241129 F52 0.4- 0.0 251102 G96 0.1- 0.3- 251109 I52 0.4- 0.2- 241204 F51 0.2+ 0.2- 251102 G96 0.1+ 0.7- 251109 I52 0.4- 0.0 241204 F51 0.1+ 0.0 251102 I52 0.0 0.1- 251109 I52 0.1- 0.1- 241204 F51 0.3+ 0.1- 251102 I52 0.3+ 0.1+ 251109 I52 0.1- 0.4- 241204 F51 0.3- 0.1- 251102 I52 0.3- 0.2- 251111 I52 0.4- 0.4+ 241224 F51 0.1+ 0.3+ 251103 M45 0.7+ 1.0- 251111 I52 0.0 0.1- 241224 F51 0.1- 0.1+ 251103 M45 1.5+ 0.6- 251111 I52 0.2+ 0.0 241224 F51 0.2- 0.1- 251103 I52 0.3- 0.0 251111 I52 0.2- 0.0 241229 F52 0.6- 0.1+ 251103 I52 0.7+ 0.2+ 251113 L04 0.6+ 0.1+ 241229 F52 0.1+ 0.0 251103 I52 0.8+ 0.0 251113 L04 0.0 0.3- 2025/ 251104 I52 0.1+ 0.1- 251114 G00 0.3- 0.2- 250102 F51 0.3- 0.3- 251104 I52 0.5- 0.0 251114 G00 0.1- 0.3- 250102 F51 0.2+ 0.1+ 251104 I52 0.1- 0.1- 251118 B74 0.3+ 0.2+ 250102 F51 0.0 0.1+ 251104 I52 0.5- 0.0 251118 B74 0.3+ 0.2+ 250121 F52 0.1- 0.3+ 251105 W62 1.9- 1.1+ 251118 B74 0.1+ 0.4+ 250121 F52 0.1+ 0.3- 251105 W62 1.9- 1.1+ 251119 X07 0.0 0.3- 250121 F52 0.0 0.1- 251105 W62 (2.1- 1.1+) 251119 X07 0.1+ 0.2- 250127 G96 0.2- 0.5+ 251105 W05 0.4+ 0.4+ 250127 G96 1.7+ 0.7+ 251105 W05 0.1- 0.2+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2025 Nov. 19