Nakano Note (Nakano wa Kangaeru noda) NK 2389 P/2012 BJ98 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 155 observations 2011 Dec. 29 to 2013 Jan. 22. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.60 arc second. See the previous orbits in HICQ 2012 and NK 2226. Epoch = 2012 Sept.30.0 TT T = 2012 Sept.20.42616 +/- 0.00085 (m.e.) TT Peri. = 72.96861 +/- 0.00042 Node = 124.03013 +/- 0.00037 (2000.0) Inc. = 2.63683 +/- 0.00007 q = 2.1565706 +/- 0.0000033 AU e = 0.8737745 +/- 0.0000200 a = 17.0850614 +/- 0.0001584 AU n' = 0.01395659 +/- 0.00000019 P = 70.620 +/- 0.0009827 years (+/- 0.36 day) The predicted orbit for the 2083 return is as follows: T = 2083 Dec. 7.36760 TT Epoch = 2083 Dec. 7.0 TT Peri. = 73.19436 e = 0.8747170 Node = 123.79982 (2000.0) a = 17.2964118 AU Inc. = 2.63222 n'= 0.01370156 q = 2.1669461 AU P = 71.934 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2011/ 120321 118 0.2+ 0.2- 120420 G96 1.7+ 0.7- 111229 691 1.0- 1.7- 120321 118 0.1+ 0.0 120420 D90 0.1- 0.3+ 111229 691 0.3+ 0.3- 120321 118 0.2- 0.1+ 120420 D90 0.2+ 0.1- 111229 691 0.5+ 0.3+ 120321 B82 0.5+ 0.4- 120420 D90 0.7+ 0.2- 2012/ 120321 B82 0.3+ 0.0 120422 A71 0.7+ 0.3- 120106 691 0.4- 0.6+ 120321 B82 0.9+ 0.4+ 120422 A71 0.4- 0.0 120106 691 0.7- 0.1- 120323 C10 0.3+ 0.8- 120422 A71 0.1- 0.2- 120106 691 0.2+ 0.2+ 120323 C10 0.4+ 0.4+ 120422 A71 0.4- 0.6- 120114 691 0.8- 0.2+ 120324 E07 0.2+ 0.2- 120422 A71 0.8+ 0.2+ 120114 691 1.6- 0.5+ 120324 E07 0.2- 0.0 120422 A71 1.3+ 0.1- 120114 691 0.6- 0.1+ 120325 D88 0.8+ 1.1+ 120422 A71 0.1+ 0.1- 120126 G96 0.5- 0.1+ 120325 D88 1.2+ 0.6+ 120422 A71 0.1- 0.3- 120126 G96 0.3- 0.0 120325 C10 0.6- 0.6+ 120423 A71 0.1+ 0.4- 120126 G96 0.1- 0.2+ 120325 C10 0.9- 0.5+ 120423 A71 0.3+ 0.0 120126 G96 0.2+ 0.1+ 120325 C10 0.4+ 0.9- 120428 J24 1.0+ 0.2- 120126 F51 0.3+ 0.0 120326 215 1.1+ 0.2- 120428 J24 0.6+ 0.2- 120126 F51 0.2+ 0.2+ 120326 215 0.8+ 0.0 120501 703 (3.7+ 1.0-) 120126 F51 0.3+ 0.1- 120326 215 0.6+ 1.6+ 120501 703 1.0+ 1.4- 120131 703 0.6- 0.9- 120327 J87 0.3- 0.1- 120501 703 1.7+ 1.0- 120131 703 1.8- 0.8- 120327 J87 0.4- 0.2- 120501 703 1.2+ 1.0- 120131 703 1.1- 0.7- 120327 J87 0.3- 0.0 120501 703 0.8+ 1.3- 120131 703 0.3- 0.5- 120403 D90 1.2+ 1.8- 120506 349 1.9+ 0.5+ 120210 G96 0.1+ 0.3+ 120403 D90 0.5- 1.1- 120506 349 1.0+ 0.4- 120210 G96 0.0 0.4+ 120404 F51 0.7- 0.2+ 120512 D90 0.6- 0.1- 120210 G96 0.0 0.5+ 120404 F51 0.9- 0.2+ 120512 D90 0.2- 0.1+ 120210 G96 0.7- 0.2+ 120407 213 0.4+ 0.3- 120512 D90 0.4+ 0.5- 120224 G96 0.2- 0.0 120407 213 0.4+ 0.3- 120513 349 0.3+ 0.2- 120224 G96 0.5- 0.0 120407 213 0.5+ 0.3- 120513 349 0.7+ 0.3- 120224 G96 0.1- 0.2+ 120410 D90 0.1- 0.4- 120514 G96 1.4+ 0.4- 120224 G96 0.4- 0.1+ 120410 D90 0.2+ 0.2- 120514 G96 1.7+ 0.6- 120301 G96 0.5- 0.4+ 120410 D90 0.6+ 0.4- 120514 G96 0.9+ 0.6- 120301 G96 0.7- 0.2+ 120412 H06 0.1+ 0.3+ 120514 G96 0.8+ 0.1- 120301 G96 0.8- 0.2+ 120412 H06 0.1- 0.5+ 120517 A71 0.8+ 0.1- 120301 G96 0.3- 0.2- 120412 A71 0.1- 0.1- 120517 A71 0.9+ 0.0 120301 204 0.2+ 0.1- 120412 A71 0.5+ 0.2- 120522 D90 0.9- 0.1+ 120301 204 0.2- 0.3- 120412 A71 0.5+ 0.3- 120522 D90 0.3- 0.1+ 120302 204 0.0 0.7- 120412 A71 0.2+ 0.1- 120522 D90 0.4- 0.2+ 120312 H06 0.0 0.7+ 120413 C32 0.0 0.5+ 120529 G96 1.2- 0.1+ 120312 H06 0.1- 0.2+ 120413 C32 0.2- 0.2+ 120529 G96 0.7- 0.1- 120314 130 0.2+ 0.6- 120413 C32 0.2+ 0.1- 120529 G96 0.3- 0.0 120314 130 0.0 0.3- 120414 704 0.0 0.5+ 120529 G96 0.3- 0.0 120314 130 0.3- 0.5- 120414 704 0.2- 0.2- 120609 E07 1.1- 0.4+ 120315 511 0.1+ 0.1- 120414 704 0.9+ 0.2+ 120609 E07 1.1- 0.5+ 120315 511 0.1+ 0.5+ 120414 704 0.1+ 0.2+ 120612 H06 1.1- 0.9+ 120316 511 0.2- 0.1- 120414 704 0.3+ 0.8+ 120612 H06 0.8- 1.0+ 120316 511 0.4+ 0.1- 120414 J24 1.6+ 0.1- 120612 H06 0.4- 1.1+ 120319 C32 0.2- 0.1+ 120414 J24 0.9+ 0.8+ 120615 J24 0.7- 0.6+ 120319 C32 0.3- 0.2+ 120414 J24 0.0 0.7- 120615 J24 0.4- 0.3+ 120319 C32 0.2- 0.4+ 120416 C23 0.2- 1.8- 120615 J24 1.5- 0.6+ 120319 C10 0.7- 0.8+ 120416 C23 0.6- 0.8+ 2013/ 120319 C10 0.1- 0.1+ 120416 C23 0.6- 0.5+ 130122 H06 0.1+ 0.5- 120320 118 0.1+ 0.1- 120420 G96 0.7+ 0.0 130122 H06 0.4+ 0.2- 120320 118 0.3+ 0.0 120420 G96 0.0 0.0 130122 H06 0.3+ 0.2+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2013 Jan. 29