Nakano Note (Nakano wa Kangaeru noda) NK 5478 C/2025 M2 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 136 observations 2025 May 29 to Sept. 25. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.35 arc second. The comet has passed 2.40 AU from Saturn on 2024 Jan. 19 and will pass 2.40 AU from Jupiter on 2028 Apr. 15, 3.29 AU from Saturn on 2031 Sept. 27 and 5.34 AU from Uranus on 2033 Apr. 4 UT. See an orbit in CBET 5576. Epoch = 2027 Nov. 11.0 TT T = 2027 Nov. 23.60489 +/- 0.04204 (m.e.) TT Peri. = 96.76590 +/- 0.01942 Node = 305.53329 +/- 0.00169 (2000.0) Inc. = 173.21573 +/- 0.00096 q = 2.7211329 +/- 0.0009129 AU e = 1.0015796 +/- 0.0001560 1/a = -0.0005805 +/- 0.0000573 1/AU origin = -0.000025 (Q= 6) future = -0.000365 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2025/ 250630 215 0.5- 0.9- 250729 F51 0.0 0.2- 250529 W84 0.4- 0.2- 250630 215 1.1- 0.9- 250729 F51 0.1- 0.1+ 250529 F52 0.1+ 0.1+ 250703 Y87 (0.3+ 2.7+) 250729 F51 0.1- 0.0 250529 F52 0.0 0.1+ 250703 Y87 (0.6- 2.0-) 250802 F51 0.3- 0.0 250529 F52 0.1+ 0.0 250703 Y87 (2.1- 3.2-) 250802 F51 0.1- 0.0 250529 F52 0.0 0.1+ 250703 Y87 (0.6- 2.2+) 250802 F51 0.1- 0.0 250619 I41 0.1+ 0.3+ 250703 Y87 (1.1- 2.9-) 250802 F51 0.1- 0.1+ 250619 I41 0.8- 0.4+ 250703 Y87 1.9- 0.0 250816 R59 0.1- 0.9- 250620 I41 0.7- 0.8- 250703 Y87 (2.2- 4.0+) 250816 R59 0.5- 0.3+ 250620 I41 1.0- 0.2- 250703 Y87 (3.3- 0.6-) 250816 R59 0.2- 0.2- 250620 I41 0.7- 0.0 250703 Y87 (0.8- 2.2+) 250817 F51 0.1- 0.1- 250620 I41 0.4- 0.1- 250703 Y87 (2.6+ 0.8-) 250817 F51 0.0 0.0 250621 I41 0.9- 0.5- 250703 X03 0.1+ 0.5- 250817 F51 0.0 0.1- 250621 I41 0.2+ 0.5- 250703 X03 0.4+ 0.3- 250817 F51 0.0 0.1- 250622 I41 0.8+ 0.0 250703 X03 0.1- 0.1+ 250818 G00 0.5+ 0.4+ 250622 F52 0.1+ 0.0 250703 X03 0.0 0.1+ 250818 G00 0.1+ 0.5- 250622 F52 0.0 0.1+ 250705 F51 0.0 0.0 250818 G00 0.1- 0.1- 250622 F52 0.0 0.1+ 250705 F51 0.0 0.0 250821 R59 0.2+ 0.0 250622 F52 0.1- 0.1+ 250705 F51 0.0 0.0 250821 R59 0.3- 0.1+ 250623 V06 0.0 0.0 250705 F51 0.0 0.0 250821 R59 0.7+ 0.3- 250623 V06 0.0 0.1+ 250718 Y68 0.0 0.1+ 250824 T08 0.2- 0.2- 250623 V06 0.0 0.1+ 250719 Y68 0.1- 0.1+ 250824 T08 0.5+ 0.4- 250623 V06 0.1+ 0.1+ 250719 Y68 0.0 0.0 250824 T08 0.3- 0.0 250625 587 0.7+ 0.0 250721 F52 0.1- 0.0 250824 T08 0.4+ 0.4+ 250625 587 0.3+ 0.4+ 250721 F52 0.1+ 0.1+ 250827 P07 0.3- 0.5+ 250625 W05 0.0 0.2- 250721 F52 0.1- 0.2+ 250827 P07 0.0 0.1- 250625 W05 0.2- 0.2+ 250721 Y68 0.0 0.0 250827 P07 0.2+ 0.1- 250625 W05 0.3- 0.5+ 250722 Y68 0.0 0.1- 250827 P07 0.4+ 0.4+ 250625 T14 0.1- 0.0 250722 Y68 0.0 0.1- 250829 F51 0.0 0.1- 250625 T14 0.0 0.0 250722 Y68 0.1- 0.2+ 250829 F51 0.0 0.1- 250625 T14 0.0 0.0 250723 G00 0.1+ 0.1+ 250829 F51 0.0 0.1- 250625 M45 0.4+ 0.2- 250723 G00 0.1+ 0.1- 250829 F51 0.1- 0.1- 250625 M45 0.7+ 0.2- 250723 G00 0.0 0.8+ 250829 P07 0.3- 0.8+ 250625 M45 0.4+ 0.4+ 250723 Y68 0.1- 0.0 250829 P07 0.1+ 0.0 250626 213 1.6+ 0.6+ 250723 Y68 0.0 0.1+ 250829 P07 0.3- 0.3+ 250626 213 0.9+ 1.1+ 250723 W62 0.6+ 0.1+ 250829 P07 0.3+ 0.3+ 250626 213 0.6+ 0.2+ 250723 W62 1.0+ 0.2- 250829 P07 0.2+ 0.0 250626 J47 0.7+ 0.3+ 250723 W62 1.1+ 0.3+ 250829 P07 0.2- 0.1+ 250626 J47 0.9+ 0.3+ 250724 F51 0.0 0.0 250915 F51 0.0 0.1- 250626 J47 0.3- 0.5+ 250724 F51 0.0 0.1- 250915 F51 0.0 0.0 250627 X03 0.0 0.0 250724 F51 0.0 0.0 250915 F51 0.1- 0.0 250627 X03 0.0 0.3+ 250725 F51 0.1- 0.1- 250915 F51 0.0 0.0 250627 X03 0.1+ 0.1+ 250725 F51 0.1- 0.1- 250918 F51 0.0 0.1- 250627 X03 0.7- 0.0 250725 F51 0.1- 0.0 250918 F51 0.0 0.0 250628 Q62 0.1- 0.1- 250725 F51 0.0 0.1- 250918 F51 0.0 0.0 250628 Q62 0.0 0.2- 250725 Q11 0.1- 0.0 250925 F51 0.1+ 0.0 250629 Q62 0.4+ 0.1- 250725 Q11 0.0 0.1+ 250925 F51 0.1- 0.0 250629 Q62 0.7+ 0.1- 250725 Q11 0.1- 0.1+ 250925 F51 0.0 0.1- 250630 215 0.3+ 0.9- 250729 F51 0.0 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2025 Oct. 12