OAA computing section circular NK 1257 C/2005 EL173 (LONEOS)
The following improved orbital elements, by S. Nakano, are from 43 observations 2005 Mar. 3 to May 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.43 arc second. See an orbit on YC 2469. Epoch = 2007 Mar. 1.0 TT T = 2007 Mar. 6.06730 +/- 0.10076 (m.e.) TT Peri. = 261.39463 +/- 0.05313 Node = 344.79493 +/- 0.00097 (2000.0) Inc. = 130.70229 +/- 0.01377 q = 3.8934527 +/- 0.0036948 AU e = 1.0030615 +/- 0.0002084 1/a = -0.0007863 +/- 0.0000535 1/AU origin = +0.000114 (Q= 5) future = +0.000033 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 050316 G96 0.8- 0.1- 050404 G96 0.1- 0.4- 050303 691 0.3- 0.1+ 050316 G96 0.6- 0.4- 050404 G96 0.2- 0.5- 050303 691 0.7- 0.0 050330 A13 0.4- 0.2+ 050404 G96 0.3- 0.2- 050303 691 0.6- 0.1- 050330 A13 0.0 0.0 050410 691 0.1+ 0.2+ 050308 699 0.4- 0.7+ 050330 A13 0.1- 0.4+ 050410 691 0.1- 0.3+ 050308 699 1.9+ 1.0+ 050330 A13 0.4- 0.2- 050410 691 0.0 0.3+ 050308 699 0.2+ 0.2+ 050331 360 0.0 0.1- 050504 G96 0.1- 0.0 050308 699 0.3+ 0.7- 050331 360 0.6+ 0.1+ 050504 G96 0.1- 0.2+ 050312 704 0.9+ 0.9+ 050331 360 0.6+ 0.1+ 050504 G96 0.1- 0.0 050312 704 0.0 0.9- 050331 461 0.2+ 0.1+ 050504 G96 0.1- 0.0 050312 704 0.5+ 0.3+ 050331 461 0.1+ 0.1- 050513 G96 0.2+ 0.0 050312 704 0.1+ 0.3- 050331 461 0.1+ 0.0 050513 G96 0.3+ 0.2+ 050312 704 0.8+ 0.0 050331 461 0.3+ 0.3- 050513 G96 0.1- 0.1- 050316 G96 0.7- 0.4- 050331 461 0.0 0.2- 050513 G96 0.0 0.2+ 050316 G96 0.8- 0.3- 050404 G96 0.2- 0.1- ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2005 Oct. 24