Nakano Note (Nakano wa Kangaeru noda) NK 1837 P/2008 CL94 (Lemmon)
The following improved orbital elements, by S. Nakano, are from 63 observations 2008 Feb. 8 to 2009 June 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.52 arc second. Epoch = 2006 July 4.0 TT T = 2006 July 9.73858 +/- 0.18267 (m.e.) TT Peri. = 82.71303 +/- 0.01963 Node = 33.54013 +/- 0.00036 (2000.0) Inc. = 8.34211 +/- 0.00009 q = 5.4378713 +/- 0.0003702 AU e = 0.1204717 +/- 0.0000725 a = 6.1827134 +/- 0.0001069 AU n' = 0.06411142 +/- 0.00000166 P = 15.373 +/- 0.0003989 years (+/- 0.15 day) The predicted orbit for the 2021 return is as follows: T = 2021 Sept.19.34033 TT Epoch = 2021 Sept.23.0 TT Peri. = 80.37873 e = 0.1205471 Node = 33.31305 (2000.0) a = 6.1635314 AU Inc. = 8.34637 n'= 0.06441094 q = 5.4205354 AU P = 15.302 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2008/ 090220 691 0.1+ 0.3- 090318 G96 0.4+ 0.7- 080208 G96 0.4+ 0.3+ 090220 691 1.0- 0.6+ 090318 H01 1.0+ 0.4- 080208 G96 0.5+ 1.0+ 090224 691 1.0- 0.0 090318 H01 0.9+ 0.4- 080208 G96 0.2+ 0.6+ 090224 691 0.4- 0.1+ 090319 204 0.2- 0.2- 080208 G96 0.2- 0.8+ 090224 691 0.3- 0.0 090319 204 0.1+ 0.5- 080210 691 0.2+ 0.2- 090317 G96 0.2+ 0.6- 090330 850 0.1- 0.4+ 080210 691 0.0 0.2- 090317 G96 1.2- 0.2- 090330 850 0.1- 0.8- 080210 691 0.4- 0.1+ 090317 G96 0.0 0.7- 090330 850 0.3- 0.6+ 080305 G96 0.0 0.5- 090317 G96 0.2+ 0.4- 090402 691 0.3- 0.2+ 080305 G96 0.1+ 0.4- 090317 G96 0.2- 0.5+ 090402 691 0.0 0.1+ 080305 G96 0.2+ 0.1- 090317 G96 0.0 0.1- 090402 691 0.6- 0.6+ 080305 G96 0.2+ 0.3- 090317 G96 0.1- 0.5+ 090417 691 0.6+ 0.5+ 080312 G96 0.1+ 0.5- 090317 G96 0.3- 0.1- 090417 691 0.3+ 0.1- 080312 G96 0.1- 0.2- 090317 G96 0.1- 0.7+ 090417 691 0.5- 1.8+ 080312 G96 0.4- 0.1- 090317 G96 0.2+ 0.6- 090420 691 0.1+ 0.1+ 080312 G96 0.1- 0.2- 090317 G96 0.0 0.0 090420 691 0.6- 0.2+ 080404 G96 0.1+ 0.1+ 090317 G96 0.7- 0.0 090420 691 0.1- 0.8+ 080404 G96 0.1+ 0.2+ 090318 H01 1.0+ 0.3- 090422 691 0.0 0.3- 080404 G96 0.4- 0.1+ 090318 H01 0.8+ 0.5- 090422 691 1.2- 1.5+ 080404 G96 0.3- 0.5- 090318 H01 1.3+ 0.4- 090422 691 0.1+ 0.2- 2009/ 090318 H01 1.0+ 0.5- 090613 204 0.9+ 0.3- 090220 691 0.6- 0.3+ 090318 G96 0.6+ 0.9- ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2009 Sept. 15