Nakano Note (Nakano wa Kangaeru noda) NK 5522 P/2024 X4 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 44 observations 2024 Sept. 30 to 2025 Dec. 14. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.44 arc second. 2025 December observations show the residuals of +30" for Right Ascension and -10" for Declination from an orbit in CBET 5486. See an orbit in CBET 5486. Epoch = 2025 Sept. 2.0 TT T = 2025 Sept. 1.95475 +/- 0.01031 (m.e.) TT Peri. = 153.30283 +/- 0.00181 Node = 258.94396 +/- 0.00009 (2000.0) Inc. = 34.66810 +/- 0.00003 q = 3.6045272 +/- 0.0000278 AU e = 0.6421004 +/- 0.0000364 a = 10.0713377 +/- 0.0010306 AU n' = 0.03083709 +/- 0.00000471 P = 31.962 +/- 0.0049100 years (+/- 1.79 days) The predicted orbit for the 2057 return is as follows: T = 2057 Aug. 16.27744 TT Epoch = 2057 Aug. 25.0 TT Peri. = 153.28541 e = 0.6434959 Node = 258.67182 (2000.0) a = 10.1395608 AU Inc. = 34.55744 n'= 0.03052638 q = 3.6147947 AU P = 32.287 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2024/ 241209 I52 0.2+ 0.4+ 241225 T14 0.2- 0.0 240930 G96 0.4+ 0.1- 241211 I52 1.0- 1.4- 241230 215 0.5+ 0.6+ 240930 G96 0.8- 0.0 241211 I52 1.0- 0.4- 241230 215 0.7+ 0.8+ 240930 G96 0.6- 0.1+ 241211 I52 0.4+ 0.1- 2025/ 241121 G96 0.3+ 0.3- 241211 I52 0.7+ 0.3- 251115 F52 0.1- 0.0 241121 G96 0.6+ 0.8+ 241214 695 0.2- 0.2+ 251115 F52 0.2+ 0.1- 241121 G96 0.7+ 0.2- 241214 695 0.1- 0.1- 251115 F52 0.1+ 0.2+ 241121 G96 0.2+ 0.0 241214 695 0.1+ 0.2- 251126 F52 0.1+ 0.0 241208 F51 0.1+ 0.1+ 241216 695 0.0 0.1- 251126 F52 0.2- 0.1- 241208 F51 0.1- 0.2+ 241216 695 0.0 0.1+ 251126 F52 0.3+ 0.0 241208 F51 0.1- 0.2+ 241216 695 0.1- 0.1+ 251126 F52 0.0 0.3- 241208 F52 0.1+ 0.1+ 241220 691 0.0 0.4+ 251214 D29 0.7- 0.4+ 241208 F52 0.0 0.1+ 241220 691 0.2- 0.2+ 251214 D29 1.6- 1.3+ 241209 I52 0.0 0.3+ 241220 691 0.4+ 0.1+ 251214 D29 0.2- 0.8+ 241209 I52 0.3+ 0.0 241225 T14 0.3- 0.0 241209 I52 0.5+ 0.0 241225 T14 0.2- 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 Jan. 7