Nakano Note (Nakano wa Kangaeru noda) NK 2316 P/2010 K2 (WISE)
The following improved orbital elements, by S. Nakano, are from 55 observations 2010 May 27 to July 21. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.45 arc second. There is a same orbit on HICQ 2010/2011. Epoch = 2010 July 23.0 TT T = 2010 July 7.55313 +/- 0.00165 (m.e.) TT Peri. = 328.53059 +/- 0.00168 Node = 281.14271 +/- 0.00383 (2000.0) Inc. = 10.64243 +/- 0.00096 q = 1.1981903 +/- 0.0000509 AU e = 0.5895015 +/- 0.0001551 a = 2.9188665 +/- 0.0003802 AU n' = 0.19764358 +/- 0.00003861 P = 4.987 +/- 0.0009743 years (+/- 0.36 day) The predicted orbit for the 2015 return is as follows: T = 2015 Aug. 13.12167 TT Epoch = 2015 Aug. 6.0 TT Peri. = 334.79129 e = 0.5697326 Node = 275.60060 (2000.0) a = 2.9620838 AU Inc. = 11.93986 n'= 0.19333392 q = 1.2744881 AU P = 5.098 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100528 C51 0.0 0.1+ 100604 291 0.4- 0.0 100527 C51 0.3+ 0.1+ 100528 C51 0.0 0.1- 100604 695 0.4- 0.1- 100527 C51 0.2+ 0.2- 100529 C51 0.1- 0.1- 100604 291 0.2- 0.0 100527 C51 0.2+ 0.0 100529 C51 0.3- 0.0 100604 695 0.3- 0.0 100527 C51 0.2+ 0.0 100529 C51 0.4- 0.3+ 100604 695 0.2- 0.7+ 100527 C51 0.1+ 0.1+ 100529 C51 0.6- 0.2+ 100604 474 0.3- 0.1+ 100527 C51 0.0 0.1+ 100603 H36 0.7+ 0.3+ 100604 474 0.3- 0.2+ 100527 C51 0.2+ 0.1+ 100603 H36 (2.2+ 0.8-) 100604 474 0.5- 0.1+ 100528 C51 0.2- 0.2- 100603 291 0.2- 0.0 100604 474 0.3- 0.2+ 100528 C51 0.1- 0.3+ 100603 291 0.2- 0.1- 100604 474 0.1+ 0.1+ 100528 C51 0.1+ 0.1- 100603 291 0.0 0.2- 100708 D90 0.1- 0.5+ 100528 C51 0.0 0.2+ 100603 H06 0.9+ 1.6- 100708 D90 0.1+ 0.3+ 100528 C51 0.1+ 0.4- 100603 H06 1.7+ 1.1- 100708 D90 1.1+ 0.8- 100528 C51 0.0 0.4+ 100604 H21 0.7+ 0.2+ 100714 474 0.5- 0.0 100528 C51 0.1+ 0.0 100604 H21 1.0+ 0.8+ 100714 474 0.3- 0.0 100528 C51 0.2- 0.1- 100604 H21 0.2+ 1.2+ 100714 474 0.3- 0.1- 100528 C51 0.1+ 0.2- 100604 H36 1.8- 0.6- 100714 474 0.2- 0.2- 100528 C51 0.1- 0.2+ 100604 H36 0.2+ 0.8- 100721 D90 0.2- 0.3+ 100528 C51 0.0 0.1+ 100604 291 0.3- 0.1- 100721 D90 0.5+ 0.1+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Late edition Syuichi Nakano 2010 Aug. 20