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Table 2
System parameters of TrES-4.
| Stellar parameters | |
| Effective temperature Teff[K] | 6295 ± 65 |
| Metallicity [Fe/H] [dex] | 0.28 ± 0.09 |
| Microturbulence velocity ξt [ km s-1] | 1.73 ± 0.02 |
| Rotational velocity Vsini∗ [ km s-1] | 8.5 ± 0.5 |
| Systemic velocity γ [ m s-1] | −16 097.0 ± 2.6 |
| RV jitter [ m s-1] | < 6 |
| Density ρ∗ [gcm-3] |
|
| Mass [M⊙] | 1.45 ± 0.05 |
| Radius [R⊙] | 1.81 ± 0.08 |
| Derived surface gravity log g [cgs] | 4.09 ± 0.03 |
| Age t [Gyr] | 2.2 ± 0.4 |
|
|
|
| Transit and orbital parameters | |
| Orbital period P [days] | 3.55392771 (47) |
| Transit epoch T0 [BJDTDB − 2 450 000] | 4230.90560 (30) |
| e cosω |
|
| e sinω |
|
| Orbital eccentricity e | < 0.016 |
| Argument of periastron ω [deg] | unconstrained |
| RV semi-amplitude K [ m s-1] | 51.1 ± 3.3 |
| Transit duration T14 [h] |
|
| Radius ratio Rp/R∗ |
|
| Inclination i [deg] |
|
| Linear limb-darkening coefficient u |
|
| a/R∗ |
|
| Impact parameter b |
|
|
|
|
| Planetary parameters | |
| Mass Mp [MJup] | 0.494 ± 0.035 |
| Radius Rp [RJup] |
|
| Density ρp [gcm-3] |
|
| Surface gravity log gp [cgs] | 2.45 ± 0.05 |
| Orbital semi-major axis a [au] | 0.0516 ± 0.0005 |
| Equilibrium temperature Teq [K]a |
|
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