Nakano Note (Nakano wa Kangaeru noda) NK 5520 P/2024 X1 (Fazekas)
The following improved orbital elements, by S. Nakano, are from 99 observations 2024 Sept. 5 to 2025 Dec. 18. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.42 arc second. The comet has passed 3.00 AU from Saturn on 1994 May 22 and 0.70 AU from Jupiter on 2024 Apr. 15 UT. 2025 December observations show the residuals of -26" for Right Ascension and +14" for Declination from an orbit in NK 5390. See the previous orbits in CBET 5480 and NK 5390. Epoch = 2025 July 24.0 TT T = 2025 Aug. 3.41947 +/- 0.00618 (m.e.) TT Peri. = 124.36149 +/- 0.00106 Node = 351.98378 +/- 0.00030 (2000.0) Inc. = 6.46505 +/- 0.00001 q = 3.8167272 +/- 0.0000090 AU e = 0.5963914 +/- 0.0000173 a = 9.4565069 +/- 0.0004028 AU n' = 0.03389284 +/- 0.00000219 P = 29.080 +/- 0.0018541 years (+/- 0.68 day) The predicted orbit for the 2053 return is as follows: T = 2053 Nov. 8.14920 TT Epoch = 2053 Oct. 25.0 TT Peri. = 124.11888 e = 0.5894028 Node = 351.79159 (2000.0) a = 9.2499319 AU Inc. = 6.48077 n'= 0.03503453 q = 3.7979959 AU P = 28.132 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2024/ 241218 I52 0.1+ 0.2- 250105 F52 0.0 0.0 240905 G96 0.4+ 0.5+ 241218 I52 0.4+ 0.5- 250105 F52 0.0 0.0 240905 G96 0.4+ 0.3+ 241218 M45 0.1- 1.2- 250106 D29 0.5+ 0.1- 240905 G96 0.3+ 0.3+ 241218 M45 0.1- 0.7- 250106 D29 0.9- 0.5- 240913 G96 0.5- 0.1+ 241218 M45 0.2+ 0.7- 250106 D29 0.4- 0.2- 240913 G96 0.4+ 0.1+ 241219 185 0.5+ 0.1+ 250106 Y71 0.1- 0.3- 240913 G96 0.1- 0.1+ 241219 185 0.2+ 0.1+ 250106 Y71 0.4+ 0.5- 240913 G96 0.6- 0.3+ 241219 185 0.2- 0.2+ 250106 Y71 0.3+ 0.3+ 241211 G96 0.0 0.2- 241219 I52 0.3- 0.3+ 250107 G96 0.3- 0.1+ 241211 G96 0.1+ 0.1+ 241219 I52 0.1- 0.3- 250107 G96 0.0 0.3+ 241211 G96 0.1+ 0.1- 241219 I52 0.1+ 0.0 250107 G96 0.1- 0.1+ 241211 G96 0.2- 0.5- 241219 I52 0.1- 0.1+ 250107 G96 0.2- 0.3+ 241211 G96 0.0 0.0 241219 F51 0.0 0.0 250118 D29 0.3- 0.1- 241211 G96 0.3+ 0.1+ 241219 F51 0.0 0.2- 250118 D29 0.3- 0.6- 241211 G96 0.0 0.3+ 241219 F51 0.2+ 0.1- 250118 D29 0.2- 0.1- 241211 I52 0.3- 0.7+ 241221 M38 0.9+ 0.4+ 250118 K77 0.6- 0.2- 241211 I52 0.1- 0.4+ 241221 M38 0.0 0.7- 250118 K77 1.7- 0.6+ 241211 I52 0.0 0.2+ 241223 Z10 0.0 0.1- 250125 Q11 0.5+ 0.0 241211 I52 0.3- 0.6+ 241223 Z10 0.2- 0.3+ 250125 Q11 0.5+ 0.1- 241211 587 0.9- 0.6- 241227 A71 (1.2+ 2.4+) 250125 Q11 0.5+ 0.1+ 241211 587 0.0 0.4+ 241227 A71 1.0+ 0.3+ 250203 X03 0.0 0.4- 241211 587 0.0 0.2+ 241228 215 0.3+ 0.6- 250203 X03 0.2+ 0.3- 241212 587 0.6- 0.7+ 241228 215 0.0 0.7- 250203 X03 0.2+ 0.3- 241212 587 0.3- 0.5+ 241228 215 0.0 1.0- 251027 G96 0.0 0.2+ 241212 595 0.4- 0.1+ 241230 G96 0.3+ 0.3+ 251027 G96 0.2- 0.2+ 241212 595 0.5- 0.2- 241230 G96 0.3+ 0.1- 251027 G96 0.2+ 0.1+ 241212 595 0.9- 0.6+ 241230 G96 0.3+ 0.1+ 251027 G96 0.1- 0.9- 241213 595 0.5+ 0.3+ 241230 G96 0.0 0.0 251215 F52 0.0 0.1+ 241213 595 0.0 1.4+ 2025/ 251215 F52 0.3+ 0.0 241213 595 0.4- 1.7+ 250102 Y71 0.1- 0.0 251215 F52 0.2- 0.2+ 241215 Z84 0.1+ 0.1- 250102 Y71 0.2- 0.2+ 251215 F52 0.2+ 0.0 241215 Z84 0.2+ 0.2+ 250102 Y71 0.2- 0.0 251218 D29 0.7- 0.5+ 241218 I52 0.6- 1.2- 250105 F52 0.0 0.0 251218 D29 0.9- 0.3+ 241218 I52 0.1- 0.5- 250105 F52 0.1- 0.1+ 251218 D29 0.3- 0.4+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2026 Jan. 7