Nakano Note (Nakano wa Kangaeru noda) NK 5421 P/2024 XK14 (Bok)
The following improved orbital elements, by S. Nakano, are from 48 observations 2024 Nov. 28 to 2025 July 9. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.60 arc seconds. See an orbit in CBET 5581 (same orbit. But number of observations is mistaken, not 39 obs). Epoch = 2025 May 5.0 TT T = 2025 May 20.91066 +/- 0.00144 (m.e.) TT Peri. = 243.48615 +/- 0.00064 Node = 239.08907 +/- 0.00006 (2000.0) Inc. = 109.21432 +/- 0.00015 q = 2.0595944 +/- 0.0000120 AU e = 0.8788703 +/- 0.0000264 a = 17.0032228 +/- 0.0037019 AU n' = 0.01405747 +/- 0.00000459 P = 70.113 +/- 0.0228965 years (+/- 8.36 days) The predicted orbit for the 2094 return is as follows: T = 2094 Aug. 19.42991 TT Epoch = 2094 Aug. 31.0 TT Peri. = 243.26404 e = 0.8781810 Node = 239.13929 (2000.0) a = 16.9529955 AU Inc. = 109.20121 n'= 0.01411999 q = 2.0651968 AU P = 69.802 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2024/ 241207 291 0.4- 0.0 250630 Q59 0.0 0.3- 241128 F51 0.3+ 0.2+ 241208 291 0.3+ 0.0 250630 Q59 0.0 0.4+ 241128 F51 0.1+ 0.0 241208 291 0.2- 0.2+ 250630 Q59 0.3+ 0.4- 241203 V00 0.1+ 0.2+ 241208 291 0.1- 0.0 250706 W68 0.6+ 0.8+ 241203 V00 0.0 0.0 2025/ 250706 W68 0.1- 0.2- 241203 V00 0.2+ 0.1- 250531 X07 1.5+ 0.0 250706 W68 1.0+ 0.5+ 241203 V00 0.1- 0.1- 250531 X07 1.0+ 1.4- 250706 W68 1.6- 0.2- 241203 H01 0.2- 0.3- 250531 X07 0.2+ 0.6- 250707 X07 0.4+ 1.2+ 241203 H01 0.2- 0.2- 250606 X07 0.5+ 0.8+ 250707 X07 0.1+ 0.6+ 241203 H01 0.5- 0.3- 250606 X07 0.6+ 0.5+ 250707 X07 0.2+ 1.2+ 241204 291 0.1+ 0.1+ 250606 X07 0.1- 1.0- 250707 X07 0.5- 1.3+ 241204 291 0.0 0.2- 250606 X07 0.4+ 1.0- 250707 X07 0.7- 0.5+ 241205 291 0.1+ 0.3- 250607 X07 0.5- 0.7+ 250707 X07 0.1- 1.3+ 241205 291 0.2- 0.3- 250607 X07 1.2- 0.6+ 250707 X07 0.5+ 0.9+ 241206 291 0.1+ 0.2+ 250607 X07 1.7- 1.0+ 250709 M21 0.6- 0.5- 241206 291 0.1+ 0.5+ 250609 X07 0.2+ 0.4- 250709 M21 0.6+ 1.1- 241207 291 0.6- 0.3- 250609 X07 0.3+ 0.2- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2025 July 10