Nakano Note (Nakano wa Kangaeru noda) NK 2878 P/2010 A1 (Hill)
The following improved orbital elements, by S. Nakano, are from 155 observations 2010 Jan. 6 to Mar. 17. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.69 arc second. Epoch = 2009 July 28.0 TT T = 2009 Aug. 6.81113 +/- 0.00552 (m.e.) TT Peri. = 13.10603 +/- 0.00447 Node = 47.41320 +/- 0.00155 (2000.0) Inc. = 10.33488 +/- 0.00014 q = 1.9500569 +/- 0.0000650 AU e = 0.5541415 +/- 0.0000580 a = 4.3737125 +/- 0.0001343 AU n' = 0.10775284 +/- 0.00000496 P = 9.147 +/- 0.0004213 years (+/- 0.15 day) The predicted orbit for the 2018 return is as follows: T = 2018 Oct. 14.01762 TT Epoch = 2018 Oct. 9.0 TT Peri. = 13.29778 e = 0.5540864 Node = 47.31466 (2000.0) a = 4.3897261 AU Inc. = 10.30828 n'= 0.10716376 q = 1.9574386 AU P = 9.197 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100115 157 0.2+ 0.3- 100124 900 1.1- 0.4+ 100106 703 0.5+ 0.1- 100116 473 0.0 0.2+ 100124 900 1.3+ 0.8- 100106 703 0.7- 0.7+ 100116 473 0.2+ 0.0 100124 J01 0.3+ 0.6+ 100106 703 1.9- 1.0- 100116 204 0.0 0.5- 100124 J01 0.1+ 0.9+ 100106 703 (2.2- 0.1-) 100116 204 0.2+ 0.2- 100125 H45 1.4+ 0.6- 100106 703 0.3- 1.0- 100116 D95 1.3- 1.7+ 100125 H45 0.6+ 1.2- 100106 703 0.1- 0.4- 100116 D95 1.8- 1.6+ 100125 H45 0.3+ 0.7- 100106 703 1.4- 0.2+ 100116 900 0.2+ 0.9+ 100125 H45 0.1- 0.1- 100106 G96 0.4- 0.1- 100116 900 0.5- 0.4+ 100125 H45 0.5+ 0.2- 100106 G96 0.1+ 0.4+ 100116 372 1.4+ 1.0+ 100125 H45 0.3+ 0.0 100106 G96 0.4- 0.3+ 100116 372 1.5+ 1.2- 100125 H45 0.3- 0.7- 100106 G96 0.1- 0.3- 100116 372 1.1- 0.7+ 100202 213 0.1- 0.2- 100106 900 0.1- 0.1+ 100116 J40 1.3- 0.4+ 100202 213 0.2+ 0.8- 100106 900 0.5- 1.1- 100116 J40 1.3- 0.9+ 100203 213 0.8- 0.3- 100107 J95 0.0 0.3- 100116 J40 0.8- 0.5- 100205 J02 1.0+ 0.2- 100107 J95 0.8+ 0.2- 100117 900 0.7- 0.2- 100205 J02 0.1- 0.0 100107 H06 0.5+ 0.1+ 100117 900 1.1+ 0.4+ 100206 349 0.2+ 1.2- 100107 H06 0.7- 0.0 100117 A77 0.0 0.3+ 100206 349 0.6- 0.4- 100107 H06 (3.0- 0.2+) 100117 A77 0.7- 0.0 100206 A77 1.1- 0.6- 100107 703 1.1- 0.4- 100117 A77 (2.7- 0.5-) 100206 A77 0.9- 1.3+ 100107 703 1.3- 0.2- 100118 104 1.8+ 1.0+ 100206 A77 1.0- 1.8- 100107 703 1.3- 0.3+ 100118 104 0.2- 0.8+ 100206 204 0.4- 0.1- 100107 703 0.4- 0.3+ 100118 104 0.3- 1.0+ 100206 473 0.0 0.0 100107 H01 0.8+ 0.1- 100118 473 0.0 0.2+ 100206 473 0.1+ 0.0 100107 H01 0.9+ 0.1- 100118 473 0.2+ 0.3+ 100207 B18 0.6+ 0.2+ 100107 H01 0.9+ 0.1- 100119 215 0.3+ 0.3+ 100207 B18 0.6+ 0.7- 100107 H01 0.9+ 0.2- 100119 215 0.4+ 0.2+ 100207 B18 0.0 0.3- 100107 372 0.4+ 0.3- 100119 473 0.1- 0.1+ 100212 H06 0.7- 0.1+ 100107 372 0.1+ 1.1- 100119 215 0.1+ 0.4- 100212 H06 0.6- 0.2- 100107 355 0.2- 0.5+ 100119 473 0.2+ 0.2+ 100214 703 1.5+ 0.9+ 100107 355 0.2- 0.0 100119 160 0.6+ 0.7+ 100214 703 0.3+ 0.2+ 100107 355 0.2+ 0.3+ 100119 160 0.3+ 0.3+ 100214 703 0.5- 1.0- 100108 349 0.5- 0.7+ 100119 160 0.2+ 0.2- 100214 703 0.1- 1.0- 100108 349 0.3- 0.7+ 100121 104 0.1+ 0.5- 100216 B82 (6.4+ 1.4+) 100109 J01 0.3+ 0.3- 100121 104 0.2+ 0.6+ 100219 J01 0.6- 0.2- 100109 J01 0.4- 0.4- 100121 104 (0.8- 2.0-) 100219 J01 1.0- 0.3- 100110 H06 0.4+ 0.1- 100121 B33 1.2+ 0.8+ 100220 B09 (2.4- 4.2-) 100110 H06 0.1+ 0.0 100121 B33 1.1+ 0.7- 100220 B09 1.2- 0.9- 100110 D93 (2.1+ 0.7+) 100121 B33 0.3- 0.6- 100220 A77 0.8+ 0.6- 100110 D93 0.7+ 0.5- 100122 349 0.3+ 1.0+ 100220 A77 0.6+ 0.2- 100110 A77 0.9+ 0.0 100122 349 0.2- 1.4+ 100220 A77 0.5- 0.3- 100110 A77 0.2+ 0.8- 100122 152 0.9- 0.6+ 100306 B82 (0.1- 3.4+) 100110 A77 0.3+ 0.4- 100122 152 0.5+ 0.5- 100306 B82 0.6+ 0.6- 100111 H10 0.1+ 0.2+ 100122 152 0.5+ 1.3+ 100306 B82 (2.1+ 0.6-) 100111 H10 0.3+ 0.1+ 100122 152 0.2+ 1.2+ 100307 850 (1.1- 4.2+) 100111 H10 1.0+ 0.5- 100122 152 0.4- 0.8+ 100307 850 (2.8- 4.4+) 100111 H10 0.4+ 0.1+ 100122 152 0.5+ 0.5- 100307 850 (1.9- 2.8+) 100111 H10 1.3- 0.7- 100123 213 0.2- 0.2- 100307 850 (3.4- 3.3+) 100111 H10 0.9+ 1.0- 100123 213 0.1- 0.0 100307 B82 (3.1+ 2.1+) 100113 B82 1.2+ 0.4- 100123 585 0.5- 0.2+ 100308 B82 0.3- 0.6- 100113 B82 (2.9+ 0.6+) 100123 585 0.1- 0.3- 100308 B82 0.3+ 1.2+ 100113 B82 1.1- 0.4+ 100123 585 0.2+ 1.0- 100308 224 1.7- 0.8- 100113 900 0.3+ 0.1- 100123 585 0.9+ 0.7+ 100308 224 (0.2- 2.4+) 100113 900 1.0- 0.7- 100123 585 0.5- 0.9+ 100311 C10(11.1+ 6.6-) 100115 213 0.0 0.7+ 100123 585 0.6- 0.2+ 100316 224 0.4+ 1.4+ 100115 213 0.7+ 0.4+ 100123 561 0.9- 0.2- 100317 H21 0.1- 1.4+ 100115 213 0.9+ 0.1+ 100123 561 0.6+ 0.6- 100317 H21 0.5+ 1.7+ 100115 157 0.9+ 0.2+ 100123 561 (0.7- 2.5+) 100317 H21 0.9+ 1.0- ( ) -------- Rejected Obs.
Associate of the CBAT Late edition Syuichi Nakano 2010 Mar. 22