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Table 1
Osculating heliocentric orbit of ’Oumuamua, based on 118 positional observations spanning the interval from 2017 Oct. 14 to 2017 Nov. 10, available at MPC on 2017 Nov. 12.
| Eccentricity | 1.199236 ± 0.000164 |
| Inverse of the semimajor axis [AU−1] | −0.780603 ± 0.000618 |
| Time of perihelion passage [TT] | 2017 Sept. 09.488519 ± 0.001243 |
| Inclination [deg] | 122.677069 ± 0.005823 |
| Argument of perihelion [deg] | 241.683487 ± 0.011254 |
| Longitude of the ascending node [deg] | 24.599729 ± 0.000264 |
| Epoch of osculation [TT] | 2017 Sept. 4.0 = JD 2458000.5 |
| Perihelion distance [AU] | 0.255234 ± 0.000062 |
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