Nakano Note (Nakano wa Kangaeru noda) NK 1728 P/2007 VQ11 (Catalina)
The following improved orbital elements, by S. Nakano, are from 70 observations 2007 Nov. 3 to 2008 Mar. 27. 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. See the previous orbit in NK 1575. Epoch = 2008 Feb. 24.0 TT T = 2008 Feb. 13.77976 +/- 0.01836 (m.e.) TT Peri. = 277.72249 +/- 0.00590 Node = 164.05252 +/- 0.00107 (2000.0) Inc. = 12.32466 +/- 0.00004 q = 2.6933777 +/- 0.0000168 AU e = 0.5022841 +/- 0.0000369 a = 5.4114757 +/- 0.0000744 AU n' = 0.07829436 +/- 0.00000161 P = 12.588 +/- 0.0002597 years (+/- 0.09 day) The predicted orbit for the 2020 return is as follows: T = 2020 Sept.17.99065 TT Epoch = 2020 Sept.28.0 TT Peri. = 277.67537 e = 0.5033178 Node = 163.81559 (2000.0) a = 5.4267229 AU Inc. = 12.32007 n'= 0.07796463 q = 2.6953566 AU P = 12.642 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2007/ 080201 703 1.3+ 0.8+ 080207 130 0.0 0.4- 071103 703 0.2+ 0.8- 080201 703 0.1- 0.6+ 080207 130 1.2- 0.8- 071103 703 0.0 0.2- 080201 703 0.0 1.2+ 080207 130 0.7+ 0.4- 071103 703 0.3- 0.5+ 080201 703 0.6+ 0.2+ 080209 204 0.1+ 0.3- 071103 703 0.5- 0.1+ 080201 673 0.7- 0.3- 080209 204 0.4- 0.0 071106 D29 0.6+ 0.4- 080201 673 0.6- 0.2- 080210 699 0.4+ 0.1+ 071106 D29 1.3+ 0.3- 080201 673 0.4- 0.1+ 080210 699 0.0 0.2+ 071106 D29 0.6+ 0.4- 080201 673 0.3- 0.6+ 080210 699 0.0 0.5- 071106 D29 0.4+ 0.2+ 080201 J95 0.2- 0.1+ 080210 699 1.9+ 0.9+ 071109 703 0.3+ 0.6+ 080201 J95 0.3- 0.1+ 080210 D88 0.4+ 0.9- 071109 703 0.4- 0.1- 080201 J95 0.0 0.2- 080210 D88 0.2- 0.0 071109 703 1.1- 1.2- 080202 215 0.2+ 0.2+ 080210 349 0.3- 0.1+ 071109 703 0.2+ 1.2- 080202 215 0.4- 0.5- 080210 349 1.1- 0.7- 071118 699 0.5+ 0.5+ 080202 215 0.0 1.2- 080304 703 0.3- 0.7+ 071118 699 1.0- 0.1+ 080202 204 0.2+ 0.1- 080304 703 0.1- 0.0 071118 699 0.0 0.1+ 080202 204 0.0 0.4- 080304 703 0.7+ 0.9- 071118 699 0.7+ 0.6- 080205 118 1.7- 0.7- 080304 703 0.9+ 0.4+ 071205 703 0.3+ 0.4+ 080205 118 1.4- 1.3- 080305 118 0.0 0.0 071205 703 0.7- 0.7+ 080206 A77 (0.8- 3.1+) 080305 118 0.1- 0.4- 071205 703 1.0- 1.3+ 080206 A77 1.7- 1.4- 080327 704 0.1- 0.8+ 071205 703 0.8- 1.4+ 080206 A77 0.5+ 1.9+ 080327 704 0.4+ 0.4+ 2008/ 080207 G96 0.2- 0.1- 080327 704 0.2+ 1.1- 080201 703 1.4+ 0.4- 080207 G96 0.8+ 0.1- 080327 704 0.4- 0.5+ 080201 703 1.2+ 1.2+ 080207 G96 0.6+ 0.2- 080327 704 (2.2+ 0.3+) 080201 703 0.9+ 1.2+ 080207 G96 0.1- 0.4- ( ) -------- Rejected Obs.
Managing Director of the Oriental Astronomical Association Syuichi Nakano 2009 Jan. 1