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Table 1.
Stellar and orbital parameters of the 56 UMa system.
| Parameter | Median ± 1 σ |
|---|---|
| Temperature, Teff [K] | 4917 ± 34 |
| Surface gravity, log g | 2.3 ± 0.6 |
| Metallicity, [Fe/H] | −0.05 |
| Microturbulence, ξ [km s−1] | 1.56 |
| Primary mass, M1 [M⊙] | 4.3 ± 0.2 |
| Period, P [days] | 16 911 |
| Eccentricity, e | 0.562 |
| Semi-major axis, a [AU] | 22.9 |
| Argument of periastron, ω1 [°] | 286 |
| Time of periastron, T0 [HJD] | 2 468 401 |
| Parallax, ϖ [mas] | 5.86 |
| Ascending node, Ω [°] | 60 |
| Inclination, i [°] | 68 |
| Secondary mass, M2 [M⊙] | 1.31 |
| Center-of-mass velocity [km s−1] | 0.13 ± 0.01 |
| Center-of-mass μα* [mas yr−1] | −37.32 ± 0.01 |
| Center-of-mass μδ [mas yr−1] | −12.18 ± 0.01 |
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