Nakano Note (Nakano wa Kangaeru noda) NK 4481 A/2014 UN271

The following improved orbital elements, by S. Nakano, are from 37 observations 2014 Aug. 28 to 2018 Nov. 8. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.07 arc second. The eccentricity of object in Solar system barycenter is slightly hyperbolic (e>1.0) from around AD 1994 (R= 53 AU; e= 1.0000006) until arorund AD 2086 (R= 73 AU; e= 1.0000018). Object comes from the INNER edge of Oort cloud, not OUTER as mentioned on CBET 4983. Epoch = 2031 Jan. 14.0 TT T = 2031 Jan. 22.98348 +/- 0.05098 (m.e.) TT Peri. = 326.32002 +/- 0.00048 Node = 190.02375 +/- 0.00004 (2000.0) Inc. = 95.45473 +/- 0.00004 q = 10.9504922 +/- 0.0001363 AU e = 1.0007146 +/- 0.0000143 1/a = -0.0000653 +/- 0.0000013 1/AU origin = +0.000040 (Q= 9) future = +0.000026 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2014/ 150109 W84 0.2+ 0.1+ 161003 W84 0.1- 0.0 140828 568 0.0 0.0 150817 W84 0.1- 0.1- 161003 W84 0.0 0.1+ 140828 568 0.2+ 0.1- 150817 W84 0.1+ 0.0 2017/ 140828 568 0.1- 0.0 150824 W84 0.1+ 0.1+ 171015 W84 0.0 0.1+ 140828 568 0.0 0.1+ 150902 W84 0.0 0.0 171015 W84 0.0 0.0 140828 568 0.0 0.1- 150913 W84 0.0 0.0 171015 W84 0.0 0.0 141020 W84 0.1+ 0.0 151006 W84 0.0 0.2- 171215 W84 0.0 0.0 141104 W84 0.0 0.1+ 151120 W84 0.0 0.1- 171215 W84 0.0 0.0 141115 W84 0.0 0.1- 151120 W84 0.1- 0.0 2018/ 141118 W84 0.1- 0.0 2016/ 181021 W84 0.1+ 0.1+ 141118 W84 0.0 0.0 160111 W84 0.0 0.0 181027 W84 0.0 0.1- 141127 W84 0.0 0.2+ 160111 W84 0.1- 0.0 181108 W84 0.0 0.0 141211 W84 0.1+ 0.0 161001 W84 0.0 0.0 181108 W84 0.0 0.0 2015/ 161001 W84 0.1+ 0.1- 181108 W84 0.0 0.0 ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2021 June 21

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