Nakano Note (Nakano wa Kangaeru noda) NK 2492 P/2007 R3 (Gibbs)

The following improved orbital elements, by S. Nakano, are from 118 observations 2007 Sept. 10 to 2007 Nov. 10. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.62 arc second. See the previous orbits in YC 2568. Epoch = 2007 June 29.0 TT T = 2007 July 6.53720 +/- 0.08185 (m.e.) TT Peri. = 312.15730 +/- 0.02196 Node = 30.08081 +/- 0.00213 (2000.0) Inc. = 3.80133 +/- 0.00047 q = 2.4998348 +/- 0.0000917 AU e = 0.4159621 +/- 0.0000721 a = 4.2802613 +/- 0.0001288 AU n' = 0.11130089 +/- 0.00000502 P = 8.855 +/- 0.0003998 years (+/- 0.15 day) The predicted orbit for the 2016 return is as follows: T = 2016 May 27.42536 TT Epoch = 2016 May 12.0 TT Peri. = 312.19170 e = 0.4138961 Node = 30.06848 (2000.0) a = 4.3009889 AU Inc. = 3.79329 n'= 0.11049728 q = 2.5208263 AU P = 8.920 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2007/ 070915 235 0.2- 1.7+ 071006 704 (0.4- 3.0-) 070910 691 1.0- 0.4+ 070915 A17 0.1- 1.1+ 071006 704 0.6+ 0.9- 070910 691 (2.3- 0.5-) 070915 A17 1.1- 0.2- 071006 213 0.7- 1.0+ 070910 691 1.2- 0.2+ 070915 A13 0.1- 0.6- 071006 213 0.6- 0.9+ 070913 704 0.7- 0.4- 070915 J95 0.1+ 0.0 071006 213 0.6- 0.9+ 070913 704 0.2- 0.6- 070916 157 0.7+ 0.6- 071006 J47 0.2+ 0.6+ 070913 704 0.7+ 0.2- 070916 J95 0.4+ 0.7- 071006 J46 0.6+ 0.5+ 070914 G96 0.1- 0.2- 070916 473 0.2- 0.2+ 071007 246 0.4+ 0.9+ 070914 G96 0.3+ 0.1- 070916 473 0.2- 0.1- 071007 246 0.6+ 0.3+ 070914 G96 0.5+ 0.6- 070916 473 0.3- 0.1+ 071007 246 1.2+ 0.2+ 070914 G96 0.3+ 0.5- 070916 H55 0.5+ 0.3+ 071007 246 1.9+ 0.1+ 070914 G96 0.6+ 0.0 070916 H55 (2.1+ 0.3-) 071009 673 0.3- 0.8+ 070914 G96 0.6+ 0.1+ 070916 H55 0.4- 0.3+ 071009 673 0.4- 0.6+ 070914 G96 0.0 0.2- 070916 H36 1.6- 0.9+ 071009 673 0.4- 0.5+ 070914 G96 0.6+ 0.3+ 070916 H36 0.4- 0.3+ 071009 673 0.5- 0.3+ 070914 G96 0.1+ 0.0 070916 H36 1.0- 1.5- 071009 585 1.3+ 1.1+ 070914 G96 0.6+ 0.2+ 070917 H55 0.3+ 0.3+ 071014 704 0.7- 1.5- 070914 G96 1.0+ 0.2- 070917 355 0.8- 0.7- 071014 704 0.5+ 1.1- 070914 G96 0.7+ 0.1+ 070917 355 (2.2- 1.1-) 071014 704 0.7- 0.6- 070915 H55 0.1- 0.6+ 070917 355 (2.3- 0.4+) 071015 246 1.8- 0.0 070915 H55 0.4+ 0.1- 070918 J47 0.2- 1.3+ 071015 246 1.4- 0.0 070915 H55 0.4+ 0.4- 070919 704 (2.1- 2.9+) 071015 246 1.5- 0.2- 070915 G96 0.4+ 0.1- 070919 704 0.2- 1.0- 071015 246 1.5- 0.9+ 070915 G96 0.3+ 0.3- 070919 704 0.1- 0.8+ 071015 246 0.2+ 0.7+ 070915 G96 0.5+ 0.0 070919 704 0.7- 0.6+ 071015 A82 0.4+ 0.3- 070915 G96 0.3+ 0.2- 070919 691 1.7- 0.9- 071015 A82 0.4+ 0.3- 070915 H36 1.2- 0.6- 070919 691 1.0- 0.2- 071015 A82 0.3+ 0.1- 070915 H36 0.7- 0.5- 070919 691 0.0 0.4- 071015 A82 0.2- 0.0 070915 H36 1.0+ 0.1- 070919 204 0.2+ 0.1- 071017 699 0.4+ 0.7+ 070915 691 0.3+ 0.0 070920 204 0.1- 0.1+ 071017 699 0.1+ 0.3+ 070915 711 0.4+ 0.7+ 070920 349 0.6- 0.2+ 071017 699 1.3+ 0.6- 070915 G96 0.5+ 0.1+ 070920 349 0.7- 0.3- 071017 699 0.5- 0.8- 070915 G96 0.5+ 0.1+ 070920 349 0.4- 0.1+ 071019 G96 0.1+ 0.3- 070915 G96 0.5+ 0.1+ 070920 215 1.6+ 0.1- 071019 G96 0.4+ 0.3- 070915 G96 0.5+ 0.0 070921 850 0.7+ 0.1- 071019 G96 0.1- 0.3- 070915 711 0.6+ 0.2+ 070921 850 0.2+ 0.3- 071019 G96 0.2+ 0.3- 070915 691 0.5- 0.0 071004 673 0.4+ 0.3+ 071105 G96 0.5+ 0.3- 070915 711 0.2+ 0.3- 071004 673 0.0 0.0 071105 G96 0.1+ 0.6- 070915 691 0.7- 1.3- 071004 673 0.4+ 0.1- 071105 G96 0.2- 0.3- 070915 A17 1.2+ 0.3+ 071004 673 0.3+ 0.1- 071105 G96 0.4- 0.1- 070915 473 0.3- 0.2+ 071006 704 0.8- 1.1+ 071110 213 0.5+ 0.4- 070915 A13 0.1+ 0.6- 071006 704 (1.7- 2.2-) 071110 213 0.5+ 0.1- ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2013 May 27

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