Nakano Note (Nakano wa Kangaeru noda) NK 5408 P/Lemmon (2007 SA24)
The following improved orbital elements, by S. Nakano, are from 99 observations 2007 to 2023. 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. The comet has passed 0.91 AU from Jupiter on 1977 May. See an orbit in CBET 5548 (same orbit). Epoch = 2022 Dec. 7.0 TT T = 2022 Dec. 5.44656 +/- 0.00161 (m.e.) TT Peri. = 108.82178 +/- 0.00033 Node = 233.40474 +/- 0.00002 (2000.0) Inc. = 17.10566 +/- 0.00002 q = 2.7111175 +/- 0.0000033 AU e = 0.5697458 +/- 0.0000005 a = 6.3011999 +/- 0.0000105 AU n' = 0.06231164 +/- 0.00000016 P = 15.817 +/- 0.0000394 years T = 2007 Mar. 30.34381 TT Epoch = 2007 Apr. 10.0 TT Peri. = 108.78028 e = 0.5688950 Node = 233.50350 (2000.0) a = 6.2506625 AU Inc. = 17.11015 n'= 0.06306886 q = 2.6946916 AU P = 15.627 years The predicted orbit for the 2038 return is as follows: T = 2038 Apr. 15.88419 TT Epoch = 2038 Apr. 7.0 TT Peri. = 107.90976 e = 0.5681834 Node = 232.73330 (2000.0) a = 6.1691067 AU Inc. = 17.08977 n'= 0.06432365 q = 2.6639226 AU P = 15.323 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2007/ 220627 F52 0.0 0.1+ 231104 F51 0.2+ 0.1- 070925 G96 1.4+ 1.0- 220627 F52 0.1+ 0.2+ 231104 F51 0.3+ 0.0 070925 G96 0.9+ 1.4- 220627 F52 0.1- 0.1+ 231104 F51 0.2+ 0.1- 070925 G96 0.6+ 0.9- 2023/ 231104 F51 0.1+ 0.1- 070925 G96 0.8+ 1.0- 231010 G96 0.0 0.2+ 231115 V00 0.2+ 0.1+ 071019 691 0.1- 0.3- 231010 G96 0.0 0.2+ 231115 V00 0.1+ 0.1+ 071019 691 0.0 0.9- 231010 G96 0.3- 0.4+ 231115 V00 0.1- 0.1+ 071019 691 0.7- 0.7- 231010 G96 0.1- 0.0 231115 V00 0.1+ 0.0 071021 703 0.1+ 0.5- 231010 G96 0.0 0.2+ 231118 F52 0.0 0.1- 071021 703 1.0+ 0.2+ 231010 G96 0.1- 0.3+ 231118 F52 0.1+ 0.1- 071021 703 (3.2- 0.4+) 231010 G96 0.3- 0.3+ 231118 F52 0.0 0.1- 071021 703 1.9- 0.4- 231010 I52 0.2- 0.6+ 231118 F52 0.1+ 0.0 071101 703 0.2- 0.1+ 231010 I52 0.3+ 0.1- 231204 F52 0.1- 0.1- 071101 703 1.1+ 0.5+ 231010 I52 0.1+ 0.2+ 231204 F52 0.1- 0.0 071101 703 0.4- 0.3- 231010 I52 0.2- 0.1+ 231204 F52 0.1+ 0.0 071101 703 0.3+ 1.7- 231010 C10 0.6- 0.0 231204 F52 0.0 0.1- 071102 704 0.5+ 0.3- 231010 C10 0.7- 0.3+ 231206 U94 0.0 0.1+ 071102 704 0.6- 0.4+ 231010 C10 0.7- 0.4+ 231206 U94 0.0 0.1+ 071102 704 0.9+ 0.2+ 231012 W62 0.1- 0.2- 231209 F52 0.0 0.0 071102 704 0.5- 0.7+ 231012 W62 0.2- 0.0 231209 F52 0.1- 0.1+ 071112 703 0.8- 0.8+ 231012 W62 0.3- 0.2- 231209 F52 0.0 0.1- 071112 703 1.9- 0.0 231013 A77 0.4- 0.0 231209 F52 0.0 0.1- 071112 703 0.3- 0.1- 231013 A77 0.2+ 0.5+ 231215 F52 0.0 0.3+ 071112 703 0.2+ 0.9- 231013 A77 0.1+ 0.0 231215 F52 0.0 0.1- 2008/ 231016 V00 0.3+ 0.1+ 231215 F52 0.0 0.1- 080228 G96 0.1- 0.0 231016 V00 0.1+ 0.0 231215 F52 0.0 0.0 080228 G96 0.3- 0.1- 231016 V00 0.1+ 0.1+ 231216 G96 0.2- 0.3+ 080228 G96 0.6- 0.2- 231016 V00 1.3+ 1.1- 231216 G96 0.8- 0.5- 080228 G96 0.8+ 0.3- 231025 F51 0.2+ 0.1- 231216 G96 0.0 0.2- 2022/ 231025 F51 0.1+ 0.1- 231216 G96 0.2- 0.3+ 220603 F52 0.1- 0.5- 231025 F51 0.1- 0.4+ 231231 F52 0.1- 0.1- 220603 F52 0.0 0.0 231104 G96 0.2- 0.1- 231231 F52 0.1+ 0.1- 220603 F52 0.0 0.1+ 231104 G96 0.0 0.2+ 231231 F52 0.1+ 0.0 220603 F52 0.1+ 0.0 231104 G96 0.5- 0.2+ 231231 F52 0.1+ 0.1- 220627 F52 0.0 0.1+ 231104 G96 0.1- 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2025 Apr. 29