Nakano Note (Nakano wa Kangaeru noda) NK 4405 P/2013 AL76 (Catalina)
The following improved orbital elements, by S. Nakano, are from 52 observations 2012 Dec. 21 to 2013 Feb. 6. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.48 arc second. Epoch = 2012 Dec. 19.0 TT T = 2012 Dec. 13.33423 +/- 0.00833 (m.e.) TT Peri. = 27.20517 +/- 0.00461 Node = 145.93885 +/- 0.00181 (2000.0) Inc. = 144.85866 +/- 0.00072 q = 2.0475311 +/- 0.0000488 AU e = 0.6842020 +/- 0.0002896 a = 6.4836735 +/- 0.0059485 AU n' = 0.05969973 +/- 0.00008216 P = 16.509 +/- 0.0227199 years (+/- 8.30 days) The predicted orbit for the 2029 return is as follows: T = 2029 June 9.84666 TT Epoch = 2029 May 24.0 TT Peri. = 27.22720 e = 0.6846401 Node = 146.18457 (2000.0) a = 6.4837392 AU Inc. = 144.93303 n'= 0.05969882 q = 2.0447111 AU P = 16.510 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2012/ 130114 703 0.2- 0.6- 130117 291 0.2+ 0.2+ 121221 F51 0.1- 0.1+ 130114 703 0.0 0.7- 130118 291 0.1- 0.4+ 121221 F51 0.0 0.0 130114 703 0.4+ 0.2- 130118 291 0.0 0.4+ 121227 F51 0.0 0.1+ 130114 J04 0.0 0.1- 130118 291 0.0 0.4+ 121227 F51 0.0 0.1- 130114 J04 0.1+ 0.1- 130120 291 0.1+ 0.5+ 2013/ 130114 J04 0.1+ 0.1- 130120 H06 (2.0- 0.5+) 130108 F51 0.2- 0.2+ 130115 J95 0.5+ 0.4- 130120 H06 (2.2- 0.3+) 130108 F51 0.0 0.2- 130115 J95 0.6+ 0.1- 130120 H06 (2.1- 1.1+) 130111 F51 0.2+ 0.2- 130116 703 0.7+ 0.5+ 130120 291 0.1+ 0.5+ 130111 F51 0.3- 0.0 130116 703 0.4- 0.4- 130121 H06 0.5- 0.4- 130114 703 0.6- 0.2- 130116 703 1.0- 0.0 130121 H06 0.4- 0.4+ 130114 703 0.4- 0.2+ 130117 H06 0.4+ 0.1- 130131 H06 0.4- 1.6- 130114 703 0.1+ 0.1- 130117 H06 0.2- 0.3- 130131 H06 0.2+ 1.3- 130114 H36 0.5- 0.1- 130117 703 0.4- 0.1- 130131 H06 0.7+ 1.0- 130114 H36 0.0 0.4- 130117 703 0.5+ 0.4+ 130131 H06 0.4+ 0.9- 130114 H36 0.6+ 0.1+ 130117 703 0.8+ 1.0+ 130131 H06 0.5+ 0.2- 130114 H36 0.3+ 0.5- 130117 703 0.5- 1.0+ 130206 291 0.7- 1.3+ 130114 H36 0.1+ 0.1+ 130117 291 0.1+ 0.3+ 130206 291 0.6- 1.1+ 130114 703 0.7- 0.2+ 130117 291 0.3+ 0.3+ 130206 291 0.2+ 0.5+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 Mar. 19