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Table 2

Parameters of the HD 209458b system.

Parameter Symbol [unit] Value

The star
Effective temperature Teff [ K ] 6065 ± 50
Radius Rs [R] 1.155
Mass Ms [M] 1.119 ± 0.033
Surface gravity log (g [ cm s-2 ]) 4.361
Metallicity [M/H] [dex] 0.00 ± 0.05
The planet
Radius ratio Rp/Rs 0.12086 ± 0.00010
Orbital semi-major axis a [Rs] 8.76 ± 0.04
Orbital inclination i [degrees] 86.71 ± 0.05
Orbital period P [days] 3.52474859
Transit impact parameter b [ Rs] 0.507 ± 0.005
Transit epoch (BJD) T0 [days] 2 452 826.628514

Notes. The transit epoch and the period are from Knutson et al. (2007) and all the other values are from Torres et al. (2008).

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