Nakano Note (Nakano wa Kangaeru noda) NK 2864 P/2002 EJ57 (LINEAR)
The following improved orbital elements, by S. Nakano, are from 57 observations 2002 Feb. 16 to May 12. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.59 arc second. See the previous orbits in NK 887. Epoch = 2002 Jan. 6.0 TT T = 2001 Dec. 19.15402 +/- 0.06429 (m.e.) TT Peri. = 166.90061 +/- 0.02016 Node = 330.38329 +/- 0.00063 (2000.0) Inc. = 4.96923 +/- 0.00031 q = 2.6355548 +/- 0.0001423 AU e = 0.5940556 +/- 0.0000603 a = 6.4924033 +/- 0.0001581 AU n' = 0.05957936 +/- 0.00000218 P = 16.543 +/- 0.0006044 years (+/- 0.22 day) The predicted orbit for the 2018 return is as follows: T = 2018 June 18.55341 TT Epoch = 2018 June 11.0 TT Peri. = 167.02103 e = 0.5934165 Node = 330.43213 (2000.0) a = 6.4616651 AU Inc. = 4.97681 n'= 0.06000500 q = 2.6272063 AU P = 16.425 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 020313 704 0.2- 0.2+ 020501 246 0.3+ 0.3+ 020216 644 0.0 0.4+ 020313 704 0.0 0.4+ 020501 246 0.0 0.5- 020216 644 0.6+ 1.1+ 020313 704 0.1- 0.1+ 020501 966 0.5- 0.4+ 020224 644 0.3+ 0.0 020313 704 0.4+ 1.3+ 020501 966 0.4- 0.1+ 020224 644 1.1- 0.4- 020313 704 0.1+ 0.8+ 020502 413 0.8- 0.1+ 020224 644 0.5+ 1.8- 020313 644 0.0 1.0+ 020502 413 0.6- 0.0 020305 644 0.8- 0.3- 020313 644 0.2- 0.8+ 020502 413 0.7- 0.1- 020305 644 0.3- 0.5- 020313 644 0.2+ 0.6+ 020502 413 0.8- 0.1+ 020305 644 0.2+ 0.1- 020315 704 1.0+ 0.2+ 020502 413 0.4- 0.0 020310 704 0.6- 0.6- 020315 704 0.1- 1.0- 020502 413 0.6- 0.3+ 020310 704 0.0 0.3- 020315 704 0.8+ 1.4- 020505 699 1.5+ 0.4- 020310 704 0.4- 0.2+ 020315 704 0.6- 0.7+ 020505 699 0.4+ 0.6+ 020310 704 (1.0+ 2.2+) 020315 704 0.5- 0.4- 020505 699 1.4+ 0.6+ 020312 704 0.0 0.6+ 020320 333 0.1- 0.7- 020505 699 0.8+ 0.1+ 020312 704 0.4- 0.6- 020320 333 0.1- 1.2- 020506 204 (3.3+ 0.7-) 020312 704 0.2- 1.3- 020320 333 0.7+ 0.1+ 020506 204 0.3+ 1.3- 020312 704 0.0 0.7+ 020501 246 0.0 0.2- 020512 360 0.4- 0.5- 020312 704 (0.1+ 2.1+) 020501 246 0.0 0.1+ 020512 360 0.0 0.4+ 020312 704 0.5+ 0.1+ 020501 246 0.7+ 0.1+ 020512 360 0.0 0.4- 020312 704 0.4+ 1.0+ 020501 246 0.3+ 0.6+ 020512 360 0.3- 0.4+ 020312 704 (1.5+ 2.2+) 020501 246 0.5- 0.4- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2015 Apr. 29