OAA computing section circular NK 953 P/2001 YX127 (LINEAR)
The following improved orbital elements, by S. Nakano, are from 84 observations 2001 Dec. 9 to 2003 May 23. 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. 7.00352 +/- 0.01718 (m.e.) TT Peri. = 115.87814 +/- 0.00303 Node = 31.12762 +/- 0.00026 (2000.0) Inc. = 7.90738 +/- 0.00002 q = 3.4262910 +/- 0.0000214 AU e = 0.1793244 +/- 0.0000066 a = 4.1749638 +/- 0.0000102 AU n' = 0.11553804 +/- 0.00000042 P = 8.531 +/- 0.0000313 years (+/- 0.011 day) The predicted orbit for the 2011 return is as follows: T = 2011 Aug. 24.22717 TT Epoch = 2011 Aug. 27.0 TT Peri. = 114.77235 e = 0.1772495 Node = 31.06653 (2000.0) a = 4.1696783 AU Inc. = 7.91551 n'= 0.11575780 q = 3.4306050 AU P = 8.514 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2001/ 021214 360 0.3+ 0.1- 030219 644 0.5+ 0.1- 011209 704 (1.3- 2.2+) 021214 360 0.8- 0.1+ 030222 204 0.2+ 0.4- 011209 704 1.0- 1.1+ 021214 360 0.3- 0.4+ 030222 204 0.8- 0.2- 011209 704 1.6- 0.2+ 2003/ 030222 204 0.3- 0.3- 011217 704 0.2- 1.1- 030107 360 0.2+ 0.3- 030222 204 0.1+ 0.3- 011217 704 0.3- 0.4+ 030107 360 1.0+ 0.5- 030223 699 1.0- 0.4- 011217 704 0.4- 0.8+ 030110 704 0.5+ 1.0- 030223 699 (3.2- 0.0 ) 011217 704 0.4+ 1.3+ 030110 704 0.7+ 0.5+ 030223 699 0.9- 0.7- 011222 704 0.3+ 1.6+ 030110 704 (2.1+ 0.5+) 030223 699 1.6- 0.4- 011222 704 0.1- 0.7- 030110 704 0.1- 0.6+ 030225 118 (0.6+ 2.2+) 011222 704 0.1- 0.1- 030130 608 1.1+ 1.4- 030305 704 0.1+ 0.2- 011222 704 0.8+ 1.2+ 030130 608 0.2- 1.2- 030305 704 0.5- 0.0 011222 704 0.4- 0.0 030130 608 0.8- 1.3- 030305 704 1.4+ 0.2+ 2002/ 030131 704 0.2+ 0.4+ 030305 704 0.2+ 0.3- 020108 704 0.8+ 0.2- 030131 704 0.2+ 0.9+ 030308 704 0.6+ 0.1- 020108 704 1.3+ 1.1- 030131 704 0.6+ 0.6+ 030308 704 0.1+ 0.2+ 020108 704 0.4- 0.0 030202 644 0.5+ 0.2+ 030308 704 0.4+ 0.5+ 020214 696 0.2- 0.3- 030202 644 0.6+ 0.6+ 030308 704 0.7- 0.0 020214 696 0.1- 0.4- 030202 644 0.2+ 0.3+ 030313 644 0.2- 0.4+ 020215 360 0.1- 0.1- 030204 699 0.6- 0.6+ 030313 644 0.2- 0.5+ 020215 867 0.3+ 0.6- 030204 699 0.3- 0.1+ 030313 644 0.1+ 0.3+ 020215 360 0.5- 0.4- 030204 699 0.7- 0.0 030326 360 0.0 0.6+ 020215 360 0.1- 0.6- 030204 699 0.2- 0.4+ 030326 360 0.6- 0.1+ 020215 867 1.3+ 0.5- 030206 704 0.2+ 0.7+ 030501 360 0.4+ 0.2+ 020304 204 0.5+ 1.9- 030206 704 0.4- 1.1+ 030501 360 0.0 0.6- 020304 204 0.6+ 0.5- 030206 704 1.0- 0.4+ 030501 360 1.3+ 0.5- 021105 204 1.2+ 0.6+ 030206 704 0.3+ 0.7+ 030523 360 0.1- 0.5- 021105 204 0.2- 0.3- 030206 360 0.0 0.4- 030523 360 0.2+ 0.1+ 021213 360 0.4+ 0.3- 030206 360 0.5+ 0.5- 030523 360 0.2- 0.1- 021213 360 0.0 0.7+ 030219 644 0.1- 0.1+ 021213 360 0.4- 0.2- 030219 644 0.2+ 0.0 ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2003 June 18