Nakano Note (Nakano wa Kangaeru noda) NK 2111 C/2010 A4 (Siding)
The following improved orbital elements, by S. Nakano, are from 132 observations 2010 Jan. 12 to 2011 July 29. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.64 arc second. The comet has passed 2.73 AU from Saturn on 2008 Sept. 27 and 3.19 AU from Jupiter on 2011 June 19 UT. See the previous orbits in NK 2002 and NK 2088 (= HICQ 2011/2012). Epoch = 2010 Oct. 11.0 TT T = 2010 Oct. 8.76336 +/- 0.00034 (m.e.) TT Peri. = 271.69108 +/- 0.00008 Node = 346.68571 +/- 0.00003 (2000.0) Inc. = 96.73023 +/- 0.00003 q = 2.7379605 +/- 0.0000019 AU e = 0.9903890 +/- 0.0000054 1/a = +0.0035103 +/- 0.0000020 1/AU origin = +0.003622 (Q= 8) future = +0.003691 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100116 372 0.2+ 0.4- 100317 415 1.0- 0.2- 100112 E12 0.1+ 0.3- 100117 372 1.0+ 0.3+ 100317 372 0.8- 0.1+ 100112 E12 0.5- 0.2+ 100117 372 0.5+ 0.0 100317 372 0.7- 0.2- 100112 E12 0.4- 0.7+ 100117 372 0.4+ 0.2- 100408 E85 (1.0+ 2.6+) 100113 I20 0.6- 0.1+ 100117 372 0.8- 1.2- 100408 E85 0.0 0.2+ 100113 I20 0.0 0.5+ 100120 415 0.4+ 0.0 100408 E85 0.5- 0.1- 100113 I20 0.4+ 0.7+ 100120 415 0.1+ 0.0 100408 467 0.3- 0.1- 100113 H01 0.8+ 0.0 100122 349 1.3- 1.1+ 100408 467 0.1- 0.1- 100113 H01 0.6+ 0.0 100122 349 (2.4- 2.1+) 100408 467 0.4- 0.3- 100113 H01 0.7+ 0.1- 100122 349 (2.3- 1.0+) 100428 C51 1.8+ 0.3+ 100113 H01 0.7+ 0.1- 100122 349 (2.5- 0.8+) 100428 C51 1.1+ 0.0 100113 H01 0.8+ 0.2- 100122 900 1.1- 0.9- 100428 C51 1.3+ 0.4+ 100113 H06 0.4- 1.5+ 100122 900 0.7+ 1.0- 100428 C51 1.1+ 0.3+ 100113 H06 0.6+ 0.0 100123 D90 1.4+ 0.0 100428 C51 1.0+ 0.1+ 100113 682 0.2+ 0.1+ 100123 D90 1.1- 0.3+ 100430 E10 (2.2+ 1.8-) 100113 H06 0.4+ 0.2- 100123 D90 (2.1+ 1.1-) 101005 D90 1.1- 0.0 100113 682 0.8- 1.0+ 100123 D90 0.1- 0.2- 101005 D90 1.1- 0.2+ 100113 H06 0.3+ 0.0 100123 D90 0.4+ 0.2+ 101005 D90 0.8- 0.6+ 100113 H21 0.7- 0.1+ 100123 D90 0.8+ 0.6- 101008 D90 0.6- 0.1+ 100113 H21 0.2- 0.1- 100123 D90 0.7- 1.0- 101008 D90 0.1- 0.3+ 100113 H21 0.9- 0.8+ 100124 349 0.2+ 1.3- 101010 D96 1.2- 0.2- 100113 H21 1.1- 0.7- 100124 349 0.4- 1.0- 101010 D96 0.7- 0.5- 100113 H06 0.0 0.7+ 100124 372 1.5+ 0.9- 101010 D96 1.0- 0.7- 100113 H21 0.5- 1.2+ 100124 372 0.9+ 0.8- 101105 D90 0.8+ 0.2+ 100113 H21 1.0- 0.3- 100125 372 1.8+ 1.1+ 101105 D90 0.7+ 0.1- 100113 H06 0.1- 1.5+ 100126 D96 1.1+ 0.1- 101105 D90 0.4+ 0.4- 100113 H10 0.2+ 0.7+ 100126 D96 1.0+ 0.4- 101114 D96 0.4+ 0.5+ 100113 H10 0.8- 0.5+ 100204 E85 0.0 0.3+ 101116 D90 0.0 0.4- 100113 H10 1.5- 0.3- 100204 E85 0.3- 0.1- 101116 D90 0.0 0.1- 100113 D90 0.6+ 0.7- 100204 E85 0.4+ 0.1- 101116 D90 0.0 0.4+ 100113 D90 0.2- 0.4- 100206 D96 0.6- 1.2- 101204 D96 0.0 0.3- 100113 D90 0.2+ 0.7- 100206 D96 0.1+ 0.7- 101228 D96 0.5+ 0.7- 100114 I19 0.4- 0.2+ 100206 D96 0.3- 1.4- 101228 D96 0.8+ 1.1- 100114 I19 0.2- 0.6+ 100212 D96 0.8+ 1.6+ 101228 D96 0.8+ 0.5- 100114 I19 0.3- 0.5+ 100212 D96 (1.2+ 2.0+) 2011/ 100114 926 0.3+ 0.1+ 100217 D96 0.7+ 0.5+ 110109 474 0.2- 0.3- 100114 926 0.3+ 0.5- 100217 D96 0.5+ 0.3+ 110109 474 0.3- 0.3- 100114 926 0.3+ 0.0 100218 E16 0.3- 0.3- 110109 474 0.2- 0.3- 100114 D90 0.4+ 0.4- 100218 E16 0.3- 0.1- 110109 474 0.2- 0.4- 100114 D90 0.2+ 0.5- 100218 E16 0.2- 0.0 110126 D96 0.2+ 1.0+ 100114 D90 0.9+ 1.4- 100226 213 0.1+ 0.2+ 110126 D96 0.5+ 0.2- 100116 204 0.1- 0.0 100226 213 0.3+ 0.5+ 110707 H06 0.7- 0.1- 100116 204 0.0 0.3+ 100306 423 1.3- 1.0- 110707 H06 1.0- 0.1+ 100116 415 0.6- 0.1- 100306 423 0.7- 0.5+ 110707 H06 1.4- 0.3+ 100116 415 0.8- 1.5+ 100311 415 0.3- 0.1+ 110729 H06 0.6- 0.4- 100116 372 0.4+ 0.4+ 100311 415 0.6- 0.3+ 110729 H06 0.3- 0.0 100116 372 0.6+ 0.3+ 100317 415 0.3- 0.6- 110729 H06 0.0 0.0 ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 Aug. 9