OAA computing section circular NK 1434 167P/CINEOS (2004 PY42)
The following improved orbital elements, by S. Nakano, are from 67 observations 2002 June 12 to 2006 Oct. 17. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.34 arc second. See an orbit in NK 1185 (= HICQ 2006, YC 2475). Epoch = 2001 May 11.0 TT T = 2001 Apr. 24.15398 +/- 0.06714 (m.e.) TT Peri. = 344.04641 +/- 0.00188 Node = 295.84360 +/- 0.00005 (2000.0) Inc. = 19.12970 +/- 0.00005 q = 11.7882280 +/- 0.0000815 AU e = 0.2691764 +/- 0.0000174 a = 16.1300584 +/- 0.0000247 AU n' = 0.01521424 +/- 0.00000004 P = 64.782 +/- 0.0001491 years (+/- 0.05 day) The predicted orbit for the 2066 return is as follows: T = 2066 Mar. 22.81436 TT Epoch = 2066 Mar. 11.0 TT Peri. = 343.48469 e = 0.2770549 Node = 295.57973 (2000.0) a = 16.2777481 AU Inc. = 19.05284 n'= 0.01500765 q = 11.7679177 AU P = 65.674 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 040810 599 0.1+ 0.3- 040913 291 0.1- 0.0 020612 644 0.1- 0.2- 040810 599 0.3+ 0.0 040913 291 0.3- 0.2+ 020612 644 0.6+ 0.4+ 040810 599 0.1+ 0.2+ 2005/ 020612 644 0.1+ 0.3- 040811 176 1.2- 0.9- 050607 290 0.2+ 0.3- 020617 644 0.1+ 0.5+ 040811 599 0.2+ 0.3+ 050607 290 0.1+ 0.2- 020629 644 0.3+ 0.1- 040811 599 0.1- 0.2- 050608 290 0.1+ 0.2- 020629 644 0.5- 0.4+ 040811 599 0.3+ 0.3+ 050608 290 0.1- 0.3- 020712 644 0.1+ 0.2+ 040811 176 0.7+ 0.1+ 050617 291 0.2- 0.1+ 020712 644 0.2+ 0.1- 040811 599 0.6+ 0.1- 050617 291 0.1+ 0.1- 020712 644 0.2- 0.0 040811 621 0.4+ 0.2- 050731 599 0.0 0.6- 020714 644 0.2- 0.4+ 040811 621 0.1- 0.2- 050731 599 0.4- 0.2- 020715 644 0.2- 0.1+ 040811 246 0.2+ 0.9- 050731 599 0.0 0.1- 020719 644 0.3- 0.3+ 040811 246 0.4+ 0.3- 050731 599 1.0+ 0.3- 020719 644 0.1- 0.1+ 040811 246 0.4+ 0.5+ 2006/ 020719 644 0.1- 0.2+ 040811 246 0.2+ 0.1- 060817 461 0.1+ 0.1+ 020829 644 0.3- 0.0 040812 673 0.2- 0.1+ 060817 461 0.3- 0.0 2003/ 040812 673 0.0 0.1+ 060916 691 0.4- 0.0 030529 291 0.7- 0.2- 040812 673 0.4+ 0.1+ 060916 691 0.0 0.5+ 030529 291 0.4- 0.5- 040812 673 0.1+ 0.0 060916 691 0.0 0.1+ 030529 291 0.3- 0.2- 040813 599 1.0+ 0.6+ 061014 461 0.1+ 0.5+ 2004/ 040912 291 0.3- 0.5- 061014 461 0.1+ 0.2+ 040810 599 0.2+ 0.1+ 040912 291 0.2- 0.1- 061014 461 0.0 0.4+ 040810 599 0.3+ 0.1+ 040912 291 0.3- 0.1- 061017 461 1.0- 0.4+ 040810 599 0.0 0.2+ 040913 291 0.4- 0.0 061017 461 0.5- 0.1+ ( ) -------- Rejected Obs.
Director, Computing Section Syuichi Nakano 2007 Mar. 1