Nakano Note (Nakano wa Kangaeru noda) NK 2725 P/2010 P4 (WISE)
The following improved orbital elements, by S. Nakano, are from 61 observations 2010 Aug. 6 to 2011 Jan. 2. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.58 arc second. See the previous orbit in NK 2016. Epoch = 2010 July 23.0 TT T = 2010 July 6.07840 +/- 0.00082 (m.e.) TT Peri. = 354.24733 +/- 0.00052 Node = 2.21300 +/- 0.00019 (2000.0) Inc. = 24.10159 +/- 0.00014 q = 1.8564782 +/- 0.0000080 AU e = 0.4987277 +/- 0.0000155 a = 3.7035325 +/- 0.0000312 AU n' = 0.13828652 +/- 0.00000175 P = 7.127 +/- 0.0000901 years The predicted orbit for the 2017 return is as follows: T = 2017 Aug. 18.34518 TT Epoch = 2017 Sept. 4.0 TT Peri. = 354.15553 e = 0.4978687 Node = 2.23359 (2000.0) a = 3.7056670 AU Inc. = 24.07862 n'= 0.13816705 q = 1.8607312 AU P = 7.133 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100812 H21 0.2+ 0.7+ 101012 H06 0.5- 0.0 100806 C51 0.7+ 0.9- 100812 291 0.6+ 0.3+ 101012 H06 0.1- 0.1- 100806 C51 0.6+ 1.2- 100812 291 0.1+ 0.5+ 101012 H06 0.1+ 0.2- 100806 C51 0.2- 0.7+ 100812 291 1.7- 0.1+ 101018 F65 0.3+ 0.3+ 100806 C51 0.3- 0.0 100813 H36 0.9- 0.4- 101018 F65 0.3- 0.1- 100807 C51 0.6- 1.8- 100813 H36 (0.0 3.2-) 101018 F65 0.3+ 0.1+ 100807 C51 1.2+ 0.1- 100813 291 0.9- 1.0+ 101029 F65 0.3+ 0.2+ 100807 C51 1.0- 0.3- 100813 291 0.8- 0.5+ 101029 F65 0.5+ 0.3+ 100807 C51 0.3+ 1.4- 100813 291 1.1- 0.3+ 101029 F65 0.3+ 0.2+ 100807 C51 0.1+ 0.5- 100816 H21 0.5+ 0.3- 101029 F65 0.3+ 0.3+ 100807 C51 0.3+ 0.7+ 100816 H21 0.2+ 0.3- 101031 585 0.2+ 0.5+ 100807 C51 1.5- 0.2+ 100912 H06 0.4+ 0.5+ 101031 585 0.7+ 0.9- 100807 C51 0.3+ 0.6- 100912 H06 1.0+ 1.1+ 101031 585 0.1- 0.5+ 100807 C51 (4.5+ 1.5+) 101006 H06 0.3- 0.6- 101105 204 0.4- 0.4- 100807 C51 0.1+ 0.7+ 101006 H06 0.5- 0.5- 101105 204 0.2- 0.4- 100807 C51 (2.2+ 0.2-) 101006 H06 0.7- 0.5- 101108 F65 0.2- 0.6- 100808 C51 0.1+ 0.5+ 101006 F65 0.1- 0.5+ 101108 F65 0.3+ 0.1+ 100811 291 0.8+ 0.7+ 101006 F65 0.2+ 0.6+ 101108 F65 0.3- 0.1- 100811 291 0.3+ 0.5+ 101007 H06 0.1+ 0.4- 2011/ 100811 291 0.6- 0.0 101007 H06 0.1+ 0.3- 110102 372 0.0 0.5+ 100812 H21 0.5+ 0.4- 101007 H06 0.3+ 0.2- 110102 372 0.3- 0.4+ 100812 H21 1.4+ 0.3+ 101010 215 0.0 0.2- 110102 372 0.7- 0.4- ( ) -------- Rejected Obs.
Associate of the CBAT Late edition Syuichi Nakano 2011 Jan. 8