Nakano Note (Nakano wa Kangaeru noda) NK 2427 P/2010 T2 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 35 observations 2010 Oct. 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 +/- 0.64 arc second. Same orbit was published on HICQ 2011. Epoch = 2011 July 18.0 TT T = 2011 July 10.92603 +/- 0.22684 (m.e.) TT Peri. = 356.14617 +/- 0.04189 Node = 59.59205 +/- 0.00213 (2000.0) Inc. = 8.02588 +/- 0.00033 q = 3.7529511 +/- 0.0005995 AU e = 0.3197869 +/- 0.0002611 a = 5.5173168 +/- 0.0004157 AU n' = 0.07605227 +/- 0.00000860 P = 12.960 +/- 0.0014648 years (+/- 0.54 day) The predicted orbit for the 2024 return is as follows: T = 2024 Mar. 4.73650 TT Epoch = 2024 Feb. 20.0 TT Peri. = 351.32585 e = 0.3302773 Node = 58.33391 (2000.0) a = 5.6428443 AU Inc. = 7.91101 n'= 0.07352871 q = 3.7791410 AU P = 13.404 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 101016 300 0.5+ 1.3- 101110 372 0.4- 0.7- 101006 F51 0.1- 0.0 101029 H06 0.4- 0.1+ 101112 204 0.4+ 0.8- 101006 F51 0.7- 0.2- 101029 H06 1.0- 0.1- 101112 204 0.1- 1.0+ 101006 F51 0.3- 0.1- 101031 585 (8.2- 5.0+) 101231 A77 1.3- 0.5+ 101006 F51 0.1- 0.2+ 101031 585 (7.9- 4.2+) 101231 A77 0.9+ 1.0+ 101007 F51 0.3+ 0.2+ 101101 H06 0.5+ 0.1- 101231 A77 1.5+ 0.6- 101007 F51 0.2+ 0.2+ 101101 H06 0.4+ 0.2- 2011/ 101007 F51 0.1- 0.0 101101 H06 0.0 1.0- 110101 A77 1.7- 1.9- 101007 F51 0.1- 0.0 101104 J01 0.4- 1.1+ 110101 A77 0.4+ 1.4- 101016 695 0.0 0.2- 101104 J01 0.7- 0.1+ 110101 A77 1.0+ 0.8+ 101016 695 0.3- 0.2- 101104 J01 0.4- 0.1+ 110102 A77 1.8- 1.2+ 101016 695 0.5- 0.2- 101110 372 1.0+ 0.4- 110102 A77 0.6+ 1.1+ 101016 300 0.2+ 0.3+ 101110 372 1.0+ 0.5+ 110102 A77 0.2+ 0.3- ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Late edition Syuichi Nakano 2011 Jan. 8