Nakano Note (Nakano wa Kangaeru noda) NK 2182 P/2011 C2 (Gibbs)

The following improved orbital elements, by S. Nakano, are from 109 observations 2011 Jan. 30 to Nov. 26. 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. See an orbit on HICQ 2011/2012. Epoch = 2011 Dec. 25.0 TT T = 2012 Jan. 7.67307 +/- 0.06181 (m.e.) TT Peri. = 160.54251 +/- 0.00590 Node = 12.20287 +/- 0.00061 (2000.0) Inc. = 10.91050 +/- 0.00012 q = 5.3886093 +/- 0.0000207 AU e = 0.2687265 +/- 0.0000246 a = 7.3688016 +/- 0.0000339 AU n' = 0.04927297 +/- 0.00000034 P = 20.003 +/- 0.0001381 years (+/- 0.05 day) The predicted orbit for the 2032 return is as follows: T = 2032 Feb. 10.60250 TT Epoch = 2032 Feb. 18.0 TT Peri. = 161.08164 e = 0.2712248 Node = 12.11334 (2000.0) a = 7.3620780 AU Inc. = 10.90882 n'= 0.04934049 q = 5.3652998 AU P = 19.976 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2011/ 110214 J95 0.1- 0.1+ 110306 A77 0.5+ 0.2- 110130 G96 1.3- 0.1+ 110214 J95 0.5- 0.5- 110306 A77 0.4+ 0.5- 110130 G96 1.0- 0.3+ 110214 461 0.6+ 0.2- 110306 A77 0.7+ 0.2- 110130 G96 0.3- 0.1- 110214 461 0.7+ 0.2- 110307 510 0.5+ 0.6+ 110130 G96 0.5+ 0.5- 110214 461 0.6+ 0.5+ 110307 510 0.4- 0.1- 110212 G96 0.0 0.2- 110214 461 0.6+ 0.7+ 110307 510 0.2+ 0.4+ 110212 G96 0.5+ 0.1- 110215 291 0.2- 0.3+ 110308 561 0.3+ 0.3- 110212 G96 0.1- 0.1+ 110215 291 0.0 0.3+ 110308 561 0.2- 0.4- 110212 G96 0.2- 0.1- 110215 291 0.3- 0.0 110308 561 0.7+ 0.4- 110212 G96 0.3- 0.3+ 110215 H21 0.1+ 0.4+ 110308 561 0.4+ 0.2- 110212 G96 0.2- 0.0 110215 H21 0.4+ 0.3- 110308 561 0.4+ 0.1- 110212 G96 0.2- 0.2+ 110215 291 0.5- 0.1+ 110308 561 0.1+ 0.3+ 110212 G96 0.6- 0.2+ 110215 H21 0.5+ 1.0- 110309 B82 0.3- 0.0 110212 118 0.6- 0.2+ 110215 291 0.1+ 0.3- 110309 B82 0.1+ 0.1- 110212 118 (2.9- 0.4+) 110215 291 0.2+ 0.2+ 110309 B82 0.3+ 0.1- 110213 H36 0.3- 0.0 110215 291 0.0 0.0 110330 J01 0.4+ 0.2+ 110213 H36 0.1+ 0.7- 110215 291 0.1- 0.2+ 110330 J01 0.4+ 0.4+ 110213 H36 0.2- 0.4- 110215 291 0.3- 0.2+ 110330 J01 0.4+ 0.5+ 110213 850 0.0 0.4+ 110215 291 0.1- 0.1- 110405 J01 0.2- 0.4+ 110213 850 1.1+ 0.7+ 110215 291 0.2- 0.2- 110405 J01 0.5- 0.3+ 110213 G96 0.1- 0.0 110215 291 0.2+ 0.3- 110405 J01 0.8- 0.2+ 110213 G96 0.1+ 0.0 110215 291 0.2- 0.0 110523 H06 0.0 0.7+ 110213 G96 0.2- 0.0 110215 291 0.3- 0.0 110523 H06 0.8- 0.8+ 110213 G96 0.5- 0.0 110215 291 0.2- 0.2+ 110523 H06 0.9- 0.8+ 110213 H06 0.4+ 0.0 110215 291 0.1- 0.0 110523 G96 0.4- 0.1+ 110213 H06 0.9+ 0.1+ 110215 291 0.0 0.0 110523 G96 0.8- 0.3- 110213 H06 1.1+ 0.2+ 110215 291 0.1- 0.1- 110523 G96 0.8- 0.5+ 110213 291 0.2- 0.1- 110222 204 0.1+ 0.3+ 110523 G96 0.3- 0.3+ 110213 H10 0.1+ 0.1+ 110222 204 0.1+ 0.4+ 110529 F51 0.1- 0.1+ 110213 291 0.1- 0.1+ 110223 J01 0.2- 0.1- 110529 F51 0.2+ 0.3- 110213 H10 0.3+ 0.1- 110223 J01 0.2- 0.1+ 110529 F51 0.1- 0.0 110213 291 0.2+ 0.0 110223 J01 0.4- 0.3+ 110529 F51 0.3+ 0.3- 110213 H10 1.8+ 0.7- 110226 372 0.2- 0.5+ 111126 G96 0.1- 0.1+ 110213 H10 1.3- 0.0 110226 372 0.4+ 0.3+ 111126 G96 0.2+ 0.0 110213 H10 1.4+ 0.2- 110302 215 0.2+ 0.6+ 111126 G96 0.1- 0.0 110213 H10 1.1- 0.5- 110306 H10 0.9+ 0.3- 111126 G96 0.2+ 0.4+ 110213 H10 (2.8- 2.7-) 110306 H10 1.1- 0.1+ 110214 J95 0.7- 0.6- 110306 H10 1.8- 0.0 ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 Dec. 30

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