OAA computing section circular NK 1383 C/2005 J2 (Catalina)
The following improved orbital elements, by S. Nakano, are from 61 observations 2005 Jan. 18 to 2006 Jan. 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The weighting mean residual is +/- 0.48 arc second. See an orbit on YC 2469. Epoch = 2005 Apr. 20.0 TT T = 2005 Apr. 5.11377 +/- 0.00810 (m.e.) TT Peri. = 199.76626 +/- 0.00137 Node = 33.35782 +/- 0.00017 (2000.0) Inc. = 150.79213 +/- 0.00014 q = 4.2889335 +/- 0.0000194 AU e = 1.0007483 +/- 0.0000443 1/a = -0.0001745 +/- 0.0000103 1/AU origin = +0.000451 (Q= 6) future = +0.000536 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 050513 703 0.8+ 0.9+ 050514 703 0.3+ 0.2- 050118 809 0.2- 0.0 050513 703 1.2+ 1.2+ 050514 651 (2.2+ 1.0+) 050118 809 0.1+ 0.0 050513 854 0.2- 1.0+ 050514 651 0.6+ 0.3+ 050118 809 0.0 0.1+ 050513 854 (2.5+ 1.4-) 050514 G96 1.1- 0.1- 050512 703 0.5+ 1.1- 050513 673 0.2- 0.1- 050514 G96 1.3- 0.4- 050512 703 1.2+ 0.4- 050513 673 1.2- 0.7- 050514 G96 1.0- 0.5- 050512 703 (2.5+ 0.2+) 050513 673 0.3- 0.4- 050514 G96 0.6- 0.4- 050512 703 1.2+ 1.3- 050513 673 0.3+ 0.1- 050515 673 1.2- 0.4+ 050512 703 0.8+ 0.1- 050514 448 1.0+ 0.6- 050515 673 0.1- 0.6+ 050512 703 1.6- 1.6+ 050514 703 0.4+ 0.9+ 050515 673 0.7- 0.2+ 050512 703 0.4- 0.4+ 050514 448 0.6+ 0.6+ 050515 673 0.3- 0.4+ 050512 703 0.6+ 1.4+ 050514 703 (1.3- 2.1-) 050515 474 0.1+ 0.7- 050512 461 0.8+ 0.0 050514 448 0.7+ 0.3- 050515 474 0.5- 0.5+ 050512 461 0.1- 0.0 050514 G96 0.4- 0.2- 050515 474 0.2- 0.1+ 050512 599 0.1+ 1.4- 050514 703 (2.1- 1.7-) 050515 474 0.1+ 0.3- 050512 599 0.2+ 0.1- 050514 G96 0.0 0.0 2006/ 050512 599 0.6- 1.1- 050514 703 (1.2- 2.0+) 060101 568 0.0 0.0 050512 599 0.0 0.6+ 050514 G96 0.1+ 0.0 060101 568 0.0 0.0 050512 807 0.7- 0.1- 050514 703 0.6+ 0.8- 060101 568 0.0 0.0 050512 807 0.9- 0.1- 050514 G90 0.7+ 0.9+ 060101 568 0.0 0.0 050512 807 0.8- 0.5- 050514 G96 0.5+ 0.5- 060101 568 0.0 0.0 050512 807 0.7- 1.0- 050514 G90 0.4+ 0.0 060101 568 0.0 0.0 050513 703 (2.4+ 0.5-) 050514 703 1.9+ 0.4+ 050513 703 1.1- 1.4+ 050514 G90 0.7+ 0.1- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2006 Dec. 3