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Table 2
Physical and geometrical parameters of the CoRoT-17 system.
| Determined from photometry | |
|
|
|
| Epoch of periastron T0 [HJD-2 400 000] | 54 923.3093 ± 0.0036 |
| Orbital period (days) | 3.7681 ± 0.0003 |
| Duration of the transit (hours) | 4.72 |
| Depth of the transit (%) | 0.44 |
|
|
|
| Determined from RV-measurements | |
| Orbital eccentricity e | 0 [fixed] |
| Argument of periastron ω [deg] | 0 [fixed] |
| Radial velocity semi-amplitude K [m s-1] | 312.4 ± 29.0 |
| Systemic velocity Vγ [km s-1] | 54.770 ± 0.008 |
| O–C residuals [m s-1] | 77 |
|
|
|
| Determined from spectral analysis of the star | |
| Teff [K] | 5740 ± 80 |
| log gstar [cgs] | 4.40 ± 0.10 |
| [Fe/H] | 0.0 ± 0.1 |
| vsini [km s-1] | 4.5 ± 0.5 |
| Spectral type | G2V |
|
|
|
| Determined from light curve modelling | |
| a/Rstar | 6.23 ± 0.24 |
| b | 0.18 ± 0.16 |
| i [deg] | 88.34 ± 1.54 |
| k | 0.0661 ± 0.0019 |
| u+ | 0.65 ± 0.17 |
| u− | 0.2 (fixed) |
|
|
|
| Combined results | |
| Stellar mean density ρst [solar] | 0.23 ± 0.02 |
| Stellar mass Mst [solar] | 1.04 ± 0.10 |
| Stellar radius Rst [solar] | 1.59 ± 0.07 |
| Stellar age [Gyr] | 10.7 ± 1.0 |
| Orbital semi-major axis a [AU] | 0.0461 ± 0.0008 |
| Planet mass Mp [MJ] | 2.43 ± 0.30 |
| Planet radius Rp [RJ] | 1.02 ± 0.07 |
| Planet mean density ρp [g cm-3] | 2.82 ± 0.38 |
 [solar units] |
0.61 ± 0.03 |
| Teq [K] | 1626 ± 31 |
| Distance [pc] | 920 ± 50 |
| AV [mag] | 2.60 ± 0.10 |
Notes. Inclination (i) was calculated from the a/Rstar ratio and from the impact parameter b. The parameter M1/3/R can be calculated from the orbital period and from the a/Rstar value (see e.g. Winn 2010). Teq is the equlibirium temperature of the planet.
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