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Table A.1

Original barycentric orbits of C/2014 UN271 at 250 au from the Sun, which was used as the starting orbit for the dynamical evolution discussed in this paper.

Solution i1 b8
time of the perihelion passage [TT] 2031 01 21.46447114 ± 0.018088 2031 01 21.48844110 ± 0.012463
perihelion distance [au] 10.94876759 ± .00010670 10.94877654 ± .00007315
Eccentricity 0.99945070 ± .00000821 0.99943996 ± .00000616
inverse of the semimajor axis [10−6 au−1] 50.17 ± 0.75 51.15 ± 0.56
inclination [deg] 95.466167 ± 0.000035 95.466152± 0.000023
argument of perihelion [deg] 326.280703 ± 0.000515 326.280949 ± 0.000363
longitude of the ascending node [deg] 190.002743 ± 0.000038 190.002732± 0.000025
epoch of osculation [TT] 171503 12 1715 03 12

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