Nakano Note (Nakano wa Kangaeru noda) NK 4494 C/2014 UNR1 (Bernardinelli-Bernstein)
The following improved orbital elements, by S. Nakano, are from 58 observations 2014 Aug. 14 to 2021 June 22. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.14 arc second. The eccentricity of object in Solar system barycenter is slightly hyperbolic (e>1.0) from around AD 1994 (R= 53 AU; e= 1.0000005) until arorund AD 2086 (R= 73 AU; e= 1.0000018). The minimum close distance to Major outer planets will be 9.07 AU from Jupiter on 2030 Feb. 28 UT. The comet comes from the inner edge of Oort cloud. See orbits in CBET 4983 (= NK 4481) and CBET 4989 (same orbit). Epoch = 2031 Jan. 14.0 TT T = 2031 Jan. 22.97208 +/- 0.03329 (m.e.) TT Peri. = 326.32041 +/- 0.00054 Node = 190.02369 +/- 0.00005 (2000.0) Inc. = 95.45468 +/- 0.00004 q = 10.9503909 +/- 0.0001214 AU e = 1.0007146 +/- 0.0000117 1/a = -0.0000653 +/- 0.0000011 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/ 151006 W84 0.0 0.2- 171211 F51 0.1+ 0.0 140814 F51 0.0 0.0 151120 W84 0.0 0.1- 171215 W84 0.0 0.0 140828 568 0.1+ 0.0 151120 W84 0.1- 0.0 171215 W84 0.0 0.1- 140828 568 0.2+ 0.1- 2016/ 2018/ 140828 568 0.1- 0.0 160111 W84 0.0 0.0 181021 W84 0.1+ 0.0 140828 568 0.0 0.1+ 160111 W84 0.1- 0.0 181027 W84 0.0 0.1- 140828 568 0.0 0.0 160809 F51 0.0 0.1+ 181108 W84 0.0 0.1- 141020 W84 0.1+ 0.0 160809 F51 0.1- 0.0 181108 W84 0.0 0.1- 141104 W84 0.0 0.1+ 161001 W84 0.0 0.0 181108 W84 0.0 0.0 141115 W84 0.0 0.0 161001 W84 0.1+ 0.1- 2019/ 141118 W84 0.0 0.0 161003 W84 0.1- 0.0 190819 F51 0.0 0.3- 141118 W84 0.0 0.1+ 161003 W84 0.0 0.1+ 190829 F51 0.1- 0.1+ 141127 W84 0.0 0.2+ 2017/ 190829 F51 0.3- 0.1+ 141211 W84 0.1+ 0.0 170813 F51 0.0 0.2+ 190829 F51 0.1+ 0.3+ 2015/ 170814 F51 0.0 0.3- 2021/ 150109 W84 0.2+ 0.1+ 170908 F51 0.0 0.3+ 210622 L81 0.4+ 0.2+ 150811 F51 0.1+ 0.1- 170930 F51 0.2- 0.1+ 210622 L81 0.5+ 0.1+ 150817 W84 0.1- 0.0 171015 W84 0.0 0.0 210622 K93 0.5+ 0.2+ 150817 W84 0.1+ 0.0 171015 W84 0.0 0.0 210622 K93 0.4+ 0.1- 150824 W84 0.1+ 0.1+ 171015 W84 0.0 0.0 210622 K93 0.1+ 0.1+ 150902 W84 0.0 0.0 171029 F51 0.3+ 0.0 210622 K93 0.4+ 0.3+ 150913 W84 0.0 0.0 171106 F51 0.4- 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 June 24