Nakano Note (Nakano wa Kangaeru noda) NK 2306 P/2012 F5 (Gibbs)
The following improved orbital elements, by S. Nakano, are from 103 observations 2012 Feb. 20 to July 7. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.76 arc second. Epoch = 2010 Mar. 25.0 TT T = 2010 Mar. 24.02863 +/- 0.37038 (m.e.) TT Peri. = 176.51300 +/- 0.06231 Node = 216.86644 +/- 0.00125 (2000.0) Inc. = 9.73815 +/- 0.00025 q = 2.8749207 +/- 0.0001546 AU e = 0.0425289 +/- 0.0000452 a = 3.0026189 +/- 0.0000716 AU n' = 0.18943218 +/- 0.00000677 P = 5.203 +/- 0.0001860 years (+/- 0.07 day) The predicted orbit for the 2015 return is as follows: T = 2015 June 15.84625 TT Epoch = 2015 June 27.0 TT Peri. = 178.09143 e = 0.0411860 Node = 216.83926 (2000.0) a = 3.0035536 AU Inc. = 9.73867 n'= 0.18934376 q = 2.8798493 AU P = 5.205 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2012/ 120324 I47 0.4- 1.0- 120327 372 0.2- 0.2+ 120220 703 0.6- 0.9- 120324 I47 0.3- 0.0 120327 372 0.7- 0.5+ 120220 703 (7.6- 1.9+) 120324 H01 0.2+ 0.2+ 120327 213 0.4- 0.1- 120227 703 (3.1- 0.8-) 120324 695 0.1+ 0.5+ 120327 213 0.8- 0.1- 120227 703 (3.8- 0.5+) 120324 695 0.7+ 0.5- 120328 C42 (3.6- 2.3+) 120227 703 (4.0- 0.1+) 120324 695 0.2+ 0.2- 120328 C42 (2.3- 1.8+) 120227 703 1.0- 0.3- 120324 H01 0.3+ 0.1+ 120328 C42 1.0+ 0.3- 120228 F51 0.1- 0.2- 120324 H01 0.2+ 0.1+ 120328 C42 0.4- 0.1+ 120303 703 0.3- 0.1+ 120324 H01 0.7+ 0.0 120328 A13 1.4+ 1.0- 120303 703 0.9- 1.1+ 120324 695 0.2+ 0.3- 120328 A13 (2.1- 0.0 ) 120303 703 1.3- 0.3+ 120324 695 0.3+ 0.0 120328 A13 (5.3- 0.2+) 120303 703 (0.4- 2.1-) 120324 695 0.4+ 0.0 120328 511 0.3- 0.8+ 120314 703 (2.0- 1.0+) 120324 E23 0.2+ 1.7+ 120328 511 0.9- 0.3+ 120314 703 1.1- 0.2+ 120324 E23 (2.0- 3.3+) 120328 511 0.6- 1.2+ 120314 703 (2.1- 1.0+) 120325 C10 0.5- 0.6+ 120328 511 0.3+ 0.9+ 120314 703 0.7+ 0.4+ 120325 J95 1.3+ 0.7- 120329 H06 0.4+ 0.4- 120322 G96 0.4+ 0.2- 120325 C10 0.6- 0.6+ 120329 H06 0.5+ 0.1- 120322 G96 0.9+ 0.5- 120325 J95 (2.4+ 0.5-) 120329 H06 0.5+ 0.1+ 120322 G96 0.4+ 0.4- 120325 H36 1.6- 1.0+ 120330 C42 (8.8- 3.1+) 120322 G96 0.9+ 0.4- 120325 H36 (2.0- 1.2+) 120330 C42 (5.7- 3.7+) 120322 G96 0.2+ 0.2- 120325 H36 (2.3- 1.2+) 120330 C42 1.0- 0.2- 120322 G96 0.9+ 0.5- 120325 H06 1.9- 0.6+ 120330 C42 (3.0+ 1.6-) 120322 G96 0.7+ 0.4- 120325 H06 (4.0- 1.0+) 120412 A71 0.7- 0.6+ 120322 G96 0.6+ 0.2- 120325 C42 0.4+ 1.2- 120412 A71 1.6- 0.9- 120322 033 0.4- 1.2+ 120325 C42 0.8- 0.6+ 120414 J24 1.1- 1.2+ 120322 033 1.0+ 0.6- 120325 372 0.3- 0.1+ 120414 J24 0.6- 1.2+ 120322 033 (3.0- 1.3+) 120325 372 0.4+ 0.5- 120415 J24 0.3+ 0.1- 120322 033 1.7- 0.7+ 120325 372 0.5+ 0.1+ 120416 E07 0.0 0.2- 120323 204 0.8- 0.6+ 120325 372 0.3+ 0.4- 120416 E07 1.7- 0.4+ 120323 204 0.8- 0.4+ 120325 B90 (2.7- 0.9+) 120416 C10 (3.5- 1.3+) 120323 I48 0.9- 1.8+ 120325 B90 1.1- 0.8- 120416 C10 0.8- 0.6+ 120323 I48 0.9- 1.3+ 120325 C10 0.1- 0.5+ 120421 C32 1.2- 1.2+ 120323 H06 (3.2- 3.5+) 120326 C10 0.2+ 1.3- 120421 C32 0.7- 0.2+ 120323 H06 (2.2- 2.7+) 120326 215 (2.0- 0.6-) 120421 C32 0.4- 0.4- 120323 I48 0.9- 0.1- 120326 215 1.9- 0.4- 120425 H06 0.9+ 0.6- 120323 H01 1.1+ 0.2- 120326 215 1.8- 0.4+ 120425 H06 1.4+ 0.1- 120323 H01 1.0+ 0.3- 120326 511 1.9- 1.2+ 120610 E07 0.8+ 0.7- 120323 H01 0.9+ 0.5- 120326 213 1.7- 0.7- 120610 E07 0.8+ 0.9- 120323 H01 0.9+ 0.3- 120326 C10 0.0 0.4+ 120613 E07 0.3- 0.4- 120323 B90 1.1+ 0.4- 120326 511 1.2- 0.5+ 120613 E07 0.2+ 0.2- 120323 B90 (2.2+ 0.5-) 120326 C10 0.7- 0.5+ 120707 E07 0.3+ 0.0 120323 J95 0.1+ 0.3+ 120326 C10 1.3+ 0.4- 120707 E07 1.3- 0.2+ 120323 J95 0.2- 0.2+ 120327 372 0.4- 0.2- 120323 J95 1.3+ 0.2- 120327 372 0.6- 0.5+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2012 July 29