Nakano Note (Nakano wa Kangaeru noda) NK 2095 P/2008 R1 (Garradd)
The following improved orbital elements, by S. Nakano, are from 29 observations 2008 July 15 to 2010 Apr. 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.56 arc second. See the previous orbits on YC 2595, YC 2597 and NK 1914. Epoch = 2013 Jan. 28.0 TT T = 2013 Jan. 25.47035 +/- 0.05390 (m.e.) TT Peri. = 256.55942 +/- 0.00287 Node = 51.96167 +/- 0.00067 (2000.0) Inc. = 15.89861 +/- 0.00010 q = 1.7976663 +/- 0.0000149 AU e = 0.3409863 +/- 0.0000083 a = 2.7278130 +/- 0.0000151 AU n' = 0.21876718 +/- 0.00000181 P = 4.505 +/- 0.0000373 years T = 2008 July 25.30776 TT Epoch = 2008 Aug. 2.0 TT Peri. = 256.50812 e = 0.3423520 Node = 51.99620 (2000.0) a = 2.7264405 AU Inc. = 15.90270 n'= 0.21893240 q = 1.7930380 AU P = 4.502 years The predicted orbit for the 2017 return is as follows: T = 2017 Aug. 4.09586 TT Epoch = 2017 July 26.0 TT Peri. = 257.50370 e = 0.3377283 Node = 51.48511 (2000.0) a = 2.7314153 AU Inc. = 15.88927 n'= 0.21833455 q = 1.8089392 AU P = 4.514 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2008/ 080902 E16 (2.0+ 3.4-) 080923 E12 0.5+ 0.4- 080715 E12 0.0 0.6- 080902 E16 (1.8+ 4.0-) 080924 F84 0.1- 0.1+ 080902 E12 0.4- 1.4+ 080902 E16 (1.4+ 2.8-) 080924 E12 0.1+ 0.2- 080902 E12 (0.3+ 2.3+) 080902 E16 (2.0+ 3.3-) 080924 415 0.2- 0.9- 080902 E12 0.3+ 0.3+ 080902 E16 (1.2+ 2.6-) 080924 415 0.4- 0.5- 080902 E12 0.3+ 1.4+ 080902 E16 (1.2+ 3.1-) 080925 E12 0.1+ 0.7- 080902 E12 0.3+ 0.5- 080904 I77 0.3+ 0.9+ 080925 E12 0.2- 0.5- 080902 E12 0.1- 0.5- 080904 I77 1.2- 0.9+ 080927 423 0.5+ 0.7- 080902 E12 0.2+ 0.4- 080909 E12 0.2- 0.7- 080927 423 0.2- 0.4+ 080902 E12 0.4+ 0.3- 080923 F84 0.8- 0.9+ 080930 423 0.5- 1.3+ 080902 E12 0.1+ 0.6- 080923 F84 0.1- 0.3+ 081001 423 0.5+ 0.0 080902 E12 0.2+ 0.5- 080923 E12 0.1+ 0.1- 2010/ 080902 E16 (1.1+ 3.3-) 080923 E12 0.3+ 0.0 100413 568 0.1+ 0.3- ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 May 13