Nakano Note (Nakano wa Kangaeru noda) NK 5616 P/2025 W3 (Kresken)
The following improved orbital elements, by S. Nakano, are from 38 observations 2025 Nov. 26 to 2026 Feb. 17. 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. See an orbit in CBET 5644. Epoch = 2025 Mar. 26.0 TT T = 2025 Mar. 16.70633 +/- 0.06391 (m.e.) TT Peri. = 311.28119 +/- 0.01458 Node = 60.06269 +/- 0.00383 (2000.0) Inc. = 9.74885 +/- 0.00104 q = 2.0870127 +/- 0.0001108 AU e = 0.1801911 +/- 0.0000771 a = 2.5457308 +/- 0.0002748 AU n' = 0.24265282 +/- 0.00003930 P = 4.062 +/- 0.0006578 years (+/- 0.24 day) The predicted orbit for the 2029 return is as follows: T = 2029 Apr. 8.27548 TT Epoch = 2029 Apr. 14.0 TT Peri. = 311.29562 e = 0.1822870 Node = 59.95563 (2000.0) a = 2.5456139 AU Inc. = 9.74469 n'= 0.24266955 q = 2.0815814 AU P = 4.062 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2025/ 251214 G00 (2.2+ 0.4+) 251224 B72 0.8- 0.4- 251126 F51 0.2+ 0.1+ 251217 W62 0.2- 0.2- 251227 F52 0.5+ 0.0 251126 F51 0.2- 0.2+ 251217 W62 0.7+ 0.1+ 251227 F52 1.1+ 0.2+ 251126 F51 0.1+ 0.0 251217 G96 (2.7- 0.3+) 251227 F52 (2.5+ 0.7+) 251126 F51 0.2+ 0.4+ 251217 G96 1.7- 0.3- 251227 Q14 (0.2+ 3.4+) 251129 Z84 0.1+ 0.0 251217 G96 0.7- 0.0 251227 Q14 (4.5- 1.8-) 251129 Z84 0.1- 0.2+ 251217 G96 0.1- 0.2- 251228 U94 0.5+ 0.2+ 251129 Z84 0.1+ 0.1+ 251218 V00 1.2+ 0.3- 251228 U94 0.3+ 0.0 251130 F52 0.2- 0.2+ 251218 V00 0.6+ 0.2+ 2026/ 251130 F52 0.3- 0.4- 251218 V00 0.5+ 0.1+ 260116 V00 0.4- 0.2+ 251130 F52 0.3- 0.0 251218 V00 0.1+ 0.0 260116 V00 0.8- 0.3- 251130 F52 0.7- 0.3- 251222 W62 0.8- 0.3+ 260116 V00 0.7- 0.2- 251201 K92 0.6- 0.8- 251222 W62 0.6- 0.0 260116 V00 0.6+ 0.1+ 251201 Z31 0.9+ 0.1- 251222 W62 0.7- 0.4+ 260217 J04 0.3- 1.5- 251201 Z31 1.0+ 0.0 251223 J04 0.6+ 0.3+ 251214 G00 (2.6+ 1.9+) 251224 B72 0.5+ 0.2+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 Sept. 8