Nakano Note (Nakano wa Kangaeru noda) NK 5029 366P/Spacewatch
The following improved orbital elements, by S. Nakano, are from 70 observations 2005 to 2018. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.50 arc second. See the previous orbits in YC 2470, NK 1384 and NK 3567. Epoch = 2018 July 21.0 TT T = 2018 July 21.83856 +/- 0.00641 (m.e.) TT Peri. = 153.33386 +/- 0.00271 Node = 70.75750 +/- 0.00035 (2000.0) Inc. = 8.85951 +/- 0.00008 q = 2.2777915 +/- 0.0000372 AU e = 0.3490906 +/- 0.0000106 a = 3.4993988 +/- 0.0000806 AU n' = 0.15056149 +/- 0.00000520 P = 6.546 +/- 0.0002262 years (+/- 0.08 day) T = 2005 June 20.11365 TT Epoch = 2005 July 9.0 TT Peri. = 153.56504 e = 0.3491085 Node = 70.79267 (2000.0) a = 3.4972048 AU Inc. = 8.85895 n'= 0.15070320 q = 2.2763008 AU P = 6.540 years [ T = 2012 Jan. 5.19372 TT Epoch = 2011 Dec. 25.0 TT Peri. = 153.48381 e = 0.3473446 Node = 70.78237 (2000.0) a = 3.5033754 AU Inc. = 8.85257 n'= 0.15030522 q = 2.2864970 AU P = 6.557 years ] The predicted orbit for the 2025 return is as follows: T = 2025 Jan. 30.89424 TT Epoch = 2025 Feb. 14.0 TT Peri. = 152.96007 e = 0.3485704 Node = 70.76054 (2000.0) a = 3.4999444 AU Inc. = 8.85658 n'= 0.15052629 q = 2.2799675 AU P = 6.548 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 050515 644 0.5- 0.1+ 180324 Q62 0.6+ 0.7+ 050404 703 (2.9- 2.1-) 050517 J78 (2.2+ 1.7-) 180324 Q62 0.7+ 0.8+ 050404 703 (0.8- 3.1-) 050525 213 0.7+ 0.1- 180326 A77 (2.3- 0.5-) 050404 703 0.6- 1.3- 050525 213 0.5+ 0.4- 180326 A77 1.3- 0.3- 050404 703 (2.3- 1.0-) 050525 213 0.5+ 0.5- 180326 A77 0.8- 0.2- 050415 699 0.6- 0.7+ 2018/ 180406 215 0.3- 0.6- 050415 699 0.1- 0.8- 180309 I41 0.9- 0.3- 180406 215 0.1- 0.5- 050415 699 (2.1+ 1.4-) 180309 I41 0.3+ 0.6- 180406 215 0.0 0.7- 050415 699 1.4+ 0.6- 180309 I41 0.8+ 0.7- 180407 K77 1.3- 1.6- 050503 691 0.1- 0.1- 180317 J04 0.3+ 0.2- 180407 K77 (0.7+ 2.3+) 050503 691 0.2+ 0.3+ 180317 J04 0.2+ 0.6- 180412 F51 0.1+ 0.2+ 050503 691 0.0 0.2+ 180317 J04 0.0 0.3- 180412 F51 0.2- 0.2+ 050504 691 0.2- 0.1+ 180317 J04 0.0 0.4- 180412 F51 0.0 0.0 050504 691 0.0 0.2- 180317 G96 0.3- 0.4- 180412 F51 0.1+ 0.1+ 050504 691 0.3- 0.2- 180317 G96 0.6- 0.4- 180412 F51 0.3+ 0.0 050509 683 0.2+ 0.0 180317 G96 0.9- 0.4- 180412 F51 0.1+ 0.2+ 050509 683 (2.3- 0.7+) 180317 G96 0.0 0.1- 180412 F51 0.1- 0.0 050509 683 0.2+ 1.7+ 180321 Z84 0.9- 0.1- 180412 F51 0.0 0.1- 050512 693 0.6- 0.2- 180321 Z84 0.2+ 0.1+ 180419 Q11 0.2+ 0.3+ 050512 693 0.6- 0.2- 180321 Z84 0.5- 0.3- 180419 Q11 0.2- 0.4+ 050512 693 0.4- 0.2- 180322 Z84 0.1+ 0.2+ 180419 Q11 0.1+ 0.6+ 050513 703 0.1- 0.1- 180322 Z84 0.2- 0.0 180420 G96 1.5+ 0.4- 050513 703 0.6+ 0.0 180322 Z84 0.6- 0.1+ 180420 G96 0.3+ 0.2+ 050513 703 (0.6+ 2.9-) 180322 Z84 0.1- 0.0 180420 G96 0.3+ 0.0 050513 703 0.4- 1.1- 180322 Q11 0.2+ 0.2+ 180420 G96 0.4+ 0.9- 050515 644 0.9- 0.0 180322 Q11 0.1- 0.2+ 180420 A71 0.6- 1.5+ 050515 644 0.4- 0.1+ 180324 Q62 1.1+ 0.3+ 180420 A71 1.4+ 0.4+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2023 June 3