Nakano Note (Nakano wa Kangaeru noda) NK 2185 P/2010 UH55 (Spacewatch)
The following improved orbital elements, by S. Nakano, are from 125 observations 2010 Sept. 12 to 2011 Dec. 29. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.49 arc second. Epoch = 2011 Apr. 29.0 TT T = 2011 May 10.35908 +/- 0.00158 (m.e.) TT Peri. = 221.61737 +/- 0.00037 Node = 235.26470 +/- 0.00007 (2000.0) Inc. = 8.66246 +/- 0.00002 q = 2.7679619 +/- 0.0000040 AU e = 0.5751213 +/- 0.0000113 a = 6.5147112 +/- 0.0000267 AU n' = 0.05927360 +/- 0.00000036 P = 16.628 +/- 0.0001024 years (+/- 0.04 day) The predicted orbit for the 2028 return is as follows: T = 2028 June 2.49170 TT Epoch = 2028 May 29.0 TT Peri. = 225.54050 e = 0.5638196 Node = 232.72875 (2000.0) a = 6.6291791 AU Inc. = 8.04380 n'= 0.05774501 q = 2.8915180 AU P = 17.068 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 101127 703 0.4- 0.2- 110225 H10 0.5+ 0.5+ 100912 J04 1.2+ 0.3+ 101127 703 0.9- 0.3- 110302 703 0.0 0.8+ 100912 J04 1.0+ 0.2+ 101203 704 0.3+ 0.7+ 110302 703 0.1- 0.8+ 100912 J04 0.9+ 0.2- 101203 704 0.1+ 0.8+ 110302 703 0.1- 1.5+ 101029 691 0.9- 0.2- 101203 704 0.1- 0.1+ 110302 703 0.2- 0.5+ 101029 691 0.3- 0.4- 101203 704 0.0 0.1+ 110302 510 0.3+ 0.7+ 101029 691 0.0 0.1- 101206 704 0.3+ 0.1+ 110302 510 0.3+ 0.7+ 101102 691 0.8- 0.0 101206 704 0.9+ 0.5- 110303 704 0.2+ 0.9+ 101102 691 0.5- 0.2- 101206 704 0.2+ 0.5- 110303 704 0.1- 0.1- 101102 691 0.7- 0.1- 101206 704 0.4+ 0.7- 110303 704 0.1+ 0.3- 101106 704 0.9+ 0.4+ 101206 704 0.1+ 0.2- 111029 H06 0.2+ 0.2- 101106 704 0.2+ 0.1+ 101206 704 1.0- 0.1+ 111029 H06 0.1+ 0.3+ 101106 704 0.7+ 0.5+ 101206 704 0.0 0.4- 111029 H06 0.4+ 0.5+ 101106 704 0.4- 0.4- 101206 704 0.7+ 0.2+ 111030 H06 0.1+ 0.5- 101106 704 0.1- 0.6- 101212 G96 0.2- 0.1- 111030 H06 0.0 0.7- 101110 G96 0.3- 0.1- 101212 G96 0.1+ 0.5- 111030 H06 0.5- 0.0 101110 G96 0.3- 0.1- 101212 G96 0.2- 0.4- 111101 I89 0.4+ 0.1+ 101110 G96 0.1+ 0.3- 101212 G96 0.5- 0.3- 111101 I89 0.3+ 0.0 101110 G96 0.4- 0.3- 101213 704 0.5+ 0.4+ 111103 H06 0.4- 1.3+ 101113 704 0.2- 0.3+ 101213 704 0.4- 0.2+ 111103 H06 0.5- 0.2- 101113 704 0.1+ 1.2+ 101213 704 0.9+ 0.3- 111107 H06 0.2+ 0.4- 101113 704 0.1+ 0.1- 101213 704 0.2- 0.2- 111107 H06 0.3+ 0.2- 101113 704 0.0 0.5- 101213 704 0.7- 0.5+ 111115 204 0.7- 0.3- 101113 704 0.1+ 0.4+ 101224 H15 0.0 0.0 111115 204 1.1- 0.0 101117 H06 0.5+ 1.0+ 101224 H15 0.1- 0.3+ 111128 C32 0.1- 0.1- 101117 H06 0.3+ 0.7+ 101224 H15 0.1+ 0.1- 111128 C32 0.1- 0.2- 101117 H06 0.6+ 0.9- 101224 H15 0.1+ 0.1+ 111128 C32 0.3+ 0.4- 101118 H06 0.4+ 0.0 2011/ 111128 F65 0.5- 0.6+ 101118 H06 0.7- 0.2- 110105 H10 0.3+ 0.2- 111128 F65 0.2+ 0.4+ 101118 H06 0.8- 0.3+ 110105 H10 0.6+ 0.4- 111128 F65 0.7+ 0.9- 101125 A50 0.5+ 0.4- 110105 H10 0.1+ 0.4- 111130 H21 0.5- 0.1- 101125 A50 0.2+ 0.1+ 110112 J04 0.0 0.1- 111130 H21 0.5- 0.3- 101125 A50 0.0 0.5+ 110112 J04 0.1- 0.0 111130 H21 0.7- 0.3- 101127 H15 0.8- 0.8- 110112 J04 0.1- 0.0 111130 291 0.4+ 0.4- 101127 H15 0.6- 0.6- 110127 704 1.0- 0.1+ 111130 291 0.6+ 0.3- 101127 H15 0.4- 0.4- 110127 704 0.1+ 0.0 111130 291 0.3+ 0.2- 101127 H15 0.2- 0.2- 110127 704 0.0 1.2+ 111228 130 0.6- 0.6- 101127 G96 0.3+ 0.3- 110127 704 1.5+ 1.5+ 111228 130 0.7- 0.1+ 101127 G96 0.1- 0.3- 110206 704 0.0 0.0 111229 C32 0.6- 1.0+ 101127 G96 0.1+ 0.4- 110206 704 0.1+ 0.9- 111229 C32 1.3+ 0.2+ 101127 G96 0.1+ 0.3- 110206 704 0.1+ 0.7- 111229 C32 0.7+ 0.4- 101127 703 0.4+ 0.4+ 110225 H10 0.3- 0.6- 101127 703 0.7- 0.3- 110225 H10 0.1+ 0.6+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2012 Jan. 1