Nakano Note (Nakano wa Kangaeru noda) NK 3188 P/McNaught 2012O1
The following improved orbital elements, by S. Nakano, are from 93 observations 2012 July 18 to Nov. 18. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.57 arc second. The comet has passed 0.39 AU from Jupiter on 2015 Jan. 3 UT. Epoch = 2012 July 12.0 TT T = 2012 July 23.90350 +/- 0.00077 (m.e.) TT Peri. = 222.10820 +/- 0.00087 Node = 111.27852 +/- 0.00044 (2000.0) Inc. = 11.42844 +/- 0.00010 q = 1.4991416 +/- 0.0000043 AU e = 0.5792264 +/- 0.0000202 a = 3.5628224 +/- 0.0000482 AU n' = 0.14655911 +/- 0.00000297 P = 6.725 +/- 0.0001365 years (+/- 0.05 day) The predicted orbit for the 2019 return is as follows: T = 2019 Mar. 2.51919 TT Epoch = 2019 Mar. 18.0 TT Peri. = 238.17798 e = 0.5943241 Node = 91.98921 (2000.0) a = 3.5379207 AU Inc. = 7.43187 n'= 0.14810917 q = 1.4352493 AU P = 6.655 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2012/ 120722 B18 0.3+ 0.3+ 120916 215 0.3+ 0.5- 120718 E12 0.2+ 0.2- 120723 474 0.4+ 0.5+ 120916 215 0.3- 0.4- 120718 E12 0.3- 0.4+ 120723 474 0.5- 0.1- 120916 215 0.7- 0.3- 120718 E12 0.3+ 0.3- 120723 474 0.8- 0.1- 120916 958 (2.7- 1.1-) 120718 E12 0.3+ 0.7- 120723 474 0.1+ 0.1- 120916 958 1.4- 1.8- 120719 204 0.4- 0.6- 120725 C10 0.0 0.8+ 120916 958 (2.0- 5.1-) 120719 204 0.4+ 0.6+ 120725 C10 0.3+ 0.5+ 120917 958 (1.1- 3.0-) 120719 954 1.2- 0.6+ 120725 C10 0.9- 0.2- 120917 958 0.9- 0.4- 120719 954 0.6+ 0.2- 120725 C10 0.7+ 0.9- 120917 958 (1.4+ 2.0-) 120719 954 0.4- 0.3- 120725 C32 0.9- 1.6+ 120917 474 0.4+ 0.2- 120719 H21 0.2- 0.3- 120725 C32 0.1- 1.0+ 120917 474 0.1- 0.1- 120719 H21 0.5+ 0.2+ 120725 C32 0.3+ 0.4+ 120917 474 0.5- 0.1+ 120719 H21 0.0 0.8+ 120729 H06 0.3- 0.0 120920 958 (3.1+ 3.6-) 120719 291 0.0 0.2+ 120729 H06 0.3- 0.1+ 120920 958 (3.6+ 2.3-) 120719 291 0.4+ 0.2- 120729 H06 0.3- 0.1+ 120920 958 0.4+ 1.7- 120719 291 0.1+ 0.2+ 120731 E12 0.2+ 0.2+ 120922 958 (2.8- 3.0-) 120719 E12 0.5+ 0.2- 120816 372 0.3- 0.0 120922 958 (2.3- 2.7-) 120719 E12 0.5+ 0.2- 120816 372 0.4- 0.0 120922 958 (0.6- 5.0-) 120720 B18 0.0 0.2- 120817 474 0.2- 0.3+ 120923 958 1.3- 1.6+ 120720 B18 0.0 0.0 120817 474 0.2- 0.7- 120923 958 0.4- 0.8- 120720 B18 0.0 0.1- 120817 474 0.2- 0.1- 120923 958 (0.9+ 2.3-) 120720 H36 0.5- 0.3- 120817 474 0.0 0.4+ 121016 C32 0.1+ 0.3- 120720 H36 0.1+ 0.1- 120822 474 0.3- 1.5- 121016 C32 0.1+ 0.4+ 120720 291 0.3+ 0.2+ 120822 474 0.6- 1.2+ 121016 C32 0.6+ 0.2+ 120720 291 0.2+ 0.2+ 120822 474 0.0 1.3- 121017 703 1.1- 1.2+ 120720 291 0.3+ 0.1+ 120822 474 0.5+ 0.6+ 121017 703 0.1- 0.4+ 120720 E12 0.3- 0.6- 120909 D90 0.3- 0.1+ 121017 703 0.6- 0.2+ 120721 H21 0.2- 0.6- 120909 D90 0.4+ 0.1+ 121017 703 (2.1- 0.2+) 120721 H21 0.3- 0.0 120909 D90 0.5+ 0.1- 121020 G96 0.5+ 0.2- 120721 H21 0.4- 0.0 120911 H06 0.3+ 0.1- 121020 G96 0.4+ 0.5+ 120721 H21 0.4- 0.3- 120911 H06 0.4+ 0.0 121020 G96 0.9+ 0.6- 120721 H36 0.4+ 0.0 120911 H06 0.5+ 0.3- 121020 G96 0.2- 0.1+ 120721 H36 0.1- 0.5+ 120911 H06 0.1- 0.2+ 121118 C32 (1.6- 3.6+) 120721 B18 0.8+ 0.1+ 120911 D90 1.6+ 0.4- 121118 C32 (2.3+ 2.1+) 120722 B18 0.4+ 0.1+ 120911 D90 1.7+ 0.4+ 121118 C32 0.2+ 1.7+ 120722 B18 0.9+ 0.2+ 120911 D90 0.2+ 0.3+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2016 July 12