OAA computing section circular NK 880 P/2001 YX127 (LINEAR)

The following improved orbital elements, by S. Nakano, are from 24 observations 2001 Dec. 9 to 2002 Mar. 4. 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. Epoch = 2003 Mar. 22.0 TT T = 2003 Mar. 6.92175 +/- 0.04166 (m.e.) TT Peri. = 115.94300 +/- 0.02495 Node = 31.10701 +/- 0.00417 (2000.0) Inc. = 7.90494 +/- 0.00056 q = 3.4243240 +/- 0.0008972 AU e = 0.1803504 +/- 0.0004064 a = 4.1777903 +/- 0.0005608 AU n' = 0.11542081 +/- 0.00002324 P = 8.539 +/- 0.0017193 years (+/- 0.63 day) The predicted orbit for the 2011 return is as follows: T = 2011 Aug. 27.42117 TT Epoch = 2011 Aug. 27.0 TT Peri. = 114.84962 e = 0.1782790 Node = 31.04665 (2000.0) a = 4.1725009 AU Inc. = 7.91302 n'= 0.11564035 q = 3.4286316 AU P = 8.523 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2001/ 011222 704 0.2- 1.1- 020214 696 0.2- 0.2+ 011209 704 0.2- 1.6+ 011222 704 0.2- 0.5- 020215 360 0.2- 0.5+ 011209 704 0.1+ 0.5+ 011222 704 0.7+ 0.7+ 020215 867 0.2+ 0.0 011209 704 0.5- 0.4- 011222 704 0.5- 0.5- 020215 360 0.6- 0.3+ 011217 704 0.1+ 1.6- 2002/ 020215 360 0.2- 0.0 011217 704 0.0 0.1- 020108 704 0.2+ 0.4- 020215 867 1.2+ 0.2+ 011217 704 0.1- 0.3+ 020108 704 0.7+ 1.3- 020304 204 0.0 0.9- 011217 704 0.7+ 0.8+ 020108 704 1.0- 0.2- 020304 204 0.1+ 0.4+ 011222 704 0.2+ 1.1+ 020214 696 0.3- 0.3+ ( ) -------- Rejected Obs.

Director, Computing Section Syuichi Nakano 2002 Oct. 31

Back to Nakano Note Page