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Table 2
Adopted parameters for the WASP-21 system.
| Parameter | Value |
|---|---|
| Stellar parameters | |
| Stellar mass, M⋆ [M⊙] | 0.890 ± 0.079(a) |
| Stellar radius, R⋆ [R⊙] | 1.136 ± 0.051(a) |
| Effective temperature, Teff [K] | 5800 ± 100(b) |
| Surface gravity, log g⋆ [cgs] | 4.277 ± 0.026(a) |
| Metallicity, [Fe∕H] | − 0.46 ± 0.11(b) |
| Proj. rotation velocity, vsini⋆ [km s−1] | 1.5 ± 0.6(b) |
| Planet parameters | |
| Planet mass, Mp [MJ] | 0.276 ± 0.019(a) |
| Planet radius, Rp [RJ] | 1.162 ± 0.054(a) |
| Equilibrium temperature, Teq [K] | 1333 ± 28(a) |
| Surface gravity, log gp [cgs] | 2.71 ± 0.03(a) |
| Orbital parameters | |
| Semi-major axis, a [AU] | 0.0499 ± 0.0015(a) |
| Eccentricity, e | 0 (fixed) (b) |
| RV semi-amplitude, K⋆ [km s−1] | 0.0372 ± 0.0011(b) |
References. (a) Ciceri et al. (2013). (b) Bouchy et al. (2010).
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