Table 5
Heliocentric and barycentric orbital elements, and 1σ uncertainties of interstellar comet 2I/Borisov (III).
| Orbital parameter | Heliocentric | Barycentric | |
|---|---|---|---|
| Eccentricity, e | = | 3.356215 ± 0.000012 | 3.358837 |
| Perihelion distance, q (AU) | = | 2.006582 ± 0.000005 | 2.011824 |
| Inclination, i (°) | = | 44.052571 ± 0.000006 | 44.062173 |
| Longitude of the ascending node, Ω (°) | = | 308.14873 ± 0.00004 | 308.10019 |
| Argument of perihelion, ω (°) | = | 209.12368 ± 0.00012 | 209.16653 |
| Time of perihelion passage, τ (TDB) | = | 2 458 826.0451 ± 0.0003 | 2 458 826.2622 |
| Nongravitational radial acceleration parameter, A1 (AU d−2) | = | 7.09 × 10−8 ± 7.6 × 10−9 | |
| Nongravitational transverse acceleration parameter, A2 (AU d−2) | = | −1.4 × 10−8 ± 2.7 × 10−9 | |
| Nongravitational normal acceleration parameter, A3 (AU d−2) | = | 6.5 × 10−10 ± 1.4 × 10−9 | |
| Nongravitational perihelion offset, dτ (d) | = | 87.3 ± 4.6 | |
Notes. This solution is hyperbolic with a statistical significance of 189938-σ (barycentric, using all the decimal figures provided by the data source) and it is based on 1428 observations that span a data-arc of 311 d. The last observation used in these calculations was acquired on July 6, 2020; the first one, on August 30, 2019. The orbit determination has been computed by D. Farnocchia at epoch JD 2 459 062.5 that corresponds to 00:00:00.000 TDB on 2020 August 1, J2000.0 ecliptic and equinox. Source: JPL’s SSDG SBDB (solution date, 2020-Aug.-21 09:32:58 PDT).
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