Nakano Note (Nakano wa Kangaeru noda) NK 1894 P/LINEAR (2002 FA9 = 2010 F2)
The following improved orbital elements, by S. Nakano, are from 67 observations 2002 to 2010. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.80 arc second. Epoch = 2010 Mar. 25.0 TT T = 2010 Mar. 21.55568 +/- 0.08391 (m.e.) TT Peri. = 333.69407 +/- 0.02148 Node = 204.48750 +/- 0.00103 (2000.0) Inc. = 8.88963 +/- 0.00037 q = 2.7483084 +/- 0.0000344 AU e = 0.3136860 +/- 0.0000087 a = 4.0044476 +/- 0.0000178 AU n' = 0.12299576 +/- 0.00000082 P = 8.013 +/- 0.0000535 years T = 2002 Mar. 19.03873 TT Epoch = 2002 Mar. 27.0 TT Peri. = 333.49627 e = 0.3149479 Node = 204.55919 (2000.0) a = 3.9940143 AU Inc. = 8.89502 n'= 0.12347802 q = 2.7361080 AU P = 7.982 years The predicted orbit for the 2018 return is as follows: T = 2018 Mar. 17.14646 TT Epoch = 2018 Mar. 23.0 TT Peri. = 333.65619 e = 0.3154671 Node = 204.46351 (2000.0) a = 3.9913489 AU Inc. = 8.90261 n'= 0.12360173 q = 2.7322097 AU P = 7.974 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 020318 704 0.6+ 0.3+ 020412 704 0.3- 0.0 020112 608 0.5- 0.0 020318 704 1.1+ 1.2+ 020412 704 0.2+ 0.5+ 020112 608 0.4+ 0.2+ 020318 704 0.3+ 0.3+ 020412 704 0.6+ 0.1- 020112 608 0.4+ 0.2+ 020318 704 1.3+ 0.6+ 020412 704 0.7- 0.7+ 020303 608 1.4- 0.4- 020318 704 1.1+ 1.1+ 020414 704 0.5- 0.9- 020303 608 1.1- 0.5- 020320 699 1.9- 0.9+ 020414 704 0.1- 0.3- 020303 608 1.0- 0.6- 020320 699 0.7- 0.8+ 020414 704 0.6- 0.0 020306 703 1.0- 0.3+ 020320 699 1.0- 1.0+ 020414 704 0.8- 0.6- 020306 703 1.4- 0.3- 020320 699 0.6- 0.2- 020414 704 1.3- 0.9+ 020306 703 1.0- 0.3- 020321 704 1.2+ 0.5- 2010/ 020306 703 0.4- 0.5+ 020321 704 1.1+ 0.7+ 100312 703 0.5- 0.2+ 020312 699 1.4- 0.9+ 020321 704 1.0+ 0.4+ 100312 703 1.2- 0.1- 020312 699 0.2- 0.1+ 020321 704 0.6+ 0.2+ 100312 703 0.3- 1.6- 020312 699 0.4- 0.6+ 020321 704 1.1+ 0.3+ 100320 E12 0.0 1.6- 020312 699 0.0 0.7+ 020323 608 1.8+ 1.4+ 100320 E12 0.4- 1.5- 020314 644 0.2- 0.9- 020323 608 1.1+ 1.0+ 100320 E12 0.3+ 1.1- 020314 644 0.3- 0.5- 020323 608 1.3+ 1.3+ 100320 E12 0.1- 1.1- 020314 644 0.4- 0.7- 020410 704 1.1+ 0.9- 100320 E12 0.1- 0.8- 020316 704 0.3+ 0.5+ 020410 704 1.7+ 0.6- 100321 H06 0.3+ 1.1- 020316 704 0.1+ 0.2+ 020410 704 0.4+ 0.3- 100321 H06 0.1- 0.8- 020316 704 0.8+ 0.1+ 020410 704 1.2+ 0.1- 100321 H06 0.5- 0.5- 020316 704 0.7+ 1.8+ 020410 704 0.6+ 0.0 100321 349 0.1+ 0.3- 020316 704 0.7+ 0.7+ 020412 704 0.5- 0.8- 100321 349 0.6- 0.9- ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2010 Mar. 22