Nakano Note (Nakano wa Kangaeru noda) NK 3318 P/2015 T5 (Sheppard-Tholen)
The following improved orbital elements, by T. Kobayashi, are from 22 observations 2015 Oct. 13 to 2016 Nov. 4. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.30 arc second. See the previous orbit in NK 3102 (= HICQ 2016). Epoch = 2016 Jan. 13.0 TT T = 2016 Jan. 24.54525 +/- 0.27637 (m.e.) TT Peri. = 61.84257 +/- 0.01279 Node = 311.19058 +/- 0.00106 (2000.0) Inc. = 11.04817 +/- 0.00011 q = 9.3383244 +/- 0.0001754 AU e = 0.6660199 +/- 0.0000774 a = 27.9607200 +/- 0.0065121 AU n' = 0.00666625 +/- 0.00000232 P = 147.850 +/- 0.0516808 years (+/-18.9 days) The predicted orbit for the 2165 return from an orbit in NK 3102 is as follows: T = 2165 Mar. 30.09530 TT Epoch = 2165 Mar. 12.0 TT Peri. = 62.03274 e = 0.6730670 Node = 310.89326 (2000.0) a = 28.6162043 AU Inc. = 11.04158 n'= 0.00643852 q = 9.3555803 AU P = 153.080 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 151103 568 0.1+ 0.1- 151117 568 0.2+ 0.3- 151013 568 0.1+ 0.2- 151105 568 0.3+ 0.1- 2016/ 151013 568 0.2+ 0.2- 151107 568 0.4+ 0.2- 160107 568 0.2+ 0.0 151013 568 0.3+ 0.2- 151107 568 0.2+ 0.2- 160107 568 0.2+ 0.1+ 151102 H06 0.2- 0.9+ 151107 568 0.3+ 0.2- 160202 568 0.1- 0.1- 151102 H06 0.8- 0.2+ 151108 291 0.3- 0.4+ 160202 568 0.1- 0.1- 151102 H06 0.9- 0.2+ 151108 291 0.3- 0.5+ 161104 T12 0.1+ 0.0 151103 568 0.1+ 0.2- 151117 568 0.1+ 0.2- 161104 T12 0.1- 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2017 Feb. 6