OAA computing section circular NK 1387 C/2005 L2 (McNaught)
The following improved orbital elements, by S. Nakano, are from 53 observations 2005 June 2 to 2006 Mar. 19. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The weighting mean residual is +/- 0.67 arc second. See an orbit on YC 2473. Epoch = 2005 July 9.0 TT T = 2005 July 14.53290 +/- 0.00174 (m.e.) TT Peri. = 294.23501 +/- 0.00042 Node = 155.86493 +/- 0.00011 (2000.0) Inc. = 152.76617 +/- 0.00005 q = 3.1937933 +/- 0.0000093 AU e = 0.9997333 +/- 0.0000189 1/a = +0.0000835 +/- 0.0000059 1/AU origin = +0.000432 (Q= 7) future = +0.000240 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 050603 E12 1.3- 0.2- 050806 415 0.3+ 0.0 050602 E12 1.1+ 0.6+ 050604 E12 0.0 0.1+ 050806 415 0.8+ 0.0 050602 E12 0.0 0.3+ 050604 E12 1.5- 0.5+ 2006/ 050602 E12 0.0 0.3+ 050604 E12 1.1- 0.3- 060131 703 1.6- 0.5- 050602 E12 1.0+ 0.0 050605 E12 0.5- 0.0 060131 703 0.4- 1.0- 050602 E12 1.2+ 0.1- 050605 E12 0.7- 0.5- 060131 703 (2.4- 0.8+) 050602 E12 0.9+ 0.4+ 050605 E12 0.5- 0.7+ 060131 703 0.6- 1.3- 050602 E12 0.0 0.2- 050605 E12 1.0+ 1.5- 060210 703 0.8+ 0.0 050602 E12 0.9- 0.2- 050611 415 0.1- 0.8- 060210 703 1.4- 1.0+ 050603 474 0.6+ 0.4- 050611 415 0.5- 0.6+ 060210 703 0.5+ 0.9+ 050603 474 1.1+ 0.3- 050702 415 0.1+ 0.2- 060210 703 0.9+ 1.3- 050603 474 0.6- 0.9+ 050702 415 0.8+ 0.2- 060218 204 0.2+ 0.2- 050603 474 1.3+ 0.2+ 050704 E12 0.5+ 0.5+ 060218 204 0.6+ 0.8- 050603 E12 0.3- 0.0 050704 E12 0.9+ 0.2- 060305 673 0.2- 0.4+ 050603 E12 1.4+ 0.3+ 050704 E12 0.7- 0.2+ 060305 673 0.3- 1.3+ 050603 E12 0.0 0.5+ 050705 415 0.3+ 0.3+ 060305 673 1.3+ 0.2- 050603 E12 0.6- 0.0 050705 415 0.1+ 0.4- 060305 673 0.1+ 0.8+ 050603 E12 0.4+ 0.2- 050706 413 0.3- 0.0 060319 215 0.2+ 0.4+ 050603 E12 0.3+ 0.7+ 050706 413 0.2- 0.1- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2006 Dec. 3