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Table 4
KOI-203: planet and star parameters.
| Fitted system parameters | ||
|
|
||
| Planet orbital period P [days] | 1.4857108 ± 0.0000002 | Désert et al. (2011) |
| Planetary transit epoch Ttr [BJD-2 400 000] |
|
Désert et al. (2011) |
| Planetary transit duration T14 [h] | 2.276 ± 0.017 | Désert et al. (2011) |
| Radius ratio Rp/R∗ |
|
Désert et al. (2011) |
| Inclination i [deg] | 87.22 ± 0.15 | Désert et al. (2011) |
| Quadratic limb darkening coefficient ua | 0.405 ± 0.007 | Désert et al. (2011) |
| Quadratic limb darkening coefficient ub |
|
Désert et al. (2011) |
| Orbital eccentricity e | <0.001 | Désert et al. (2011) |
| Radial-velocity semi-amplitude K [ m s-1] | 399 ± 9 | This work |
| Systemic velocity γrel [ km s-1] | −24.814 ± 0.007 | This work |
| HET-SOPHIE offset γrel [ km s-1] | −0.019 ± 0.014 | This work |
| Derived system parameters | ||
|
|
||
| a/R∗ | 5.48 ± 0.02 | Désert et al. (2011) |
| (M ⋆ /M⊙)1/3(R ⋆ /R⊙)-1 | 1.001 ± 0.020 | Désert et al. (2011) |
| Stellar density ρ∗ [gcm-3] | 1.415 ± 0.084 | Désert et al. (2011) |
| Impact parameter b |
|
Désert et al. (2011) |
| Atmospheric parameters of the star | ||
|
|
||
| Effective temperature Teff [K] | 5781 ± 85 | This work |
| Surface gravity log g [cgs] | 4.53 ± 0.12 | This work |
| Metallicity [Fe/H] [dex] | 0.26 ± 0.10 | This work |
| Stellar rotational velocity Vsini∗ [ km s-1] | 6 ± 2 | This work |
| Spectral type | G2V | |
| Stellar and planetary physical parameters | ||
|
|
||
| Star mass [M⊙]a | 1.16 ± 0.06 | This work |
| Star radius [R⊙]a | 1.05 ± 0.03 | This work |
| Photometric surface gravity log g [cgs] | 4.46 ± 0.04 | This work |
| Planet mass Mp [MJup] | 2.47 ± 0.10 | This work |
| Planet radius Rp [RJup] | 1.33 ± 0.04 | This work |
| Planet density ρp [gcm-3] | 1.30 ± 0.14 | This work |
| Planet surface gravity log gp [cgs] | 3.54 ± 0.03 | This work |
| Stellar rotation period P ∗ ,rot [days] | 11.89 ± 0.15 | Désert et al. (2011) |
| Age of the star t [Gyr] | <1.78 | This work |
| Distance of the star d [pc] | 800 ± 100 | This work |
| Orbital semi-major axis a [AU] | 0.0268 ± 0.0005 | This work |
| Equilibrium temperature Teq [K]b | 1746 ± 26 | This work |
| Geometric albedo Ag | <0.12 | This work |
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