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Table 1
Orbital and physical parameters of the WASP-69 star-planet system (a).
| Parameter | Symbol (unit) | Value |
|---|---|---|
| Stellar effective temperature | Teff (K) | 4715 ± 50 |
| Stellar surface gravity | logg* (cgs) | 4.535 ± 0.023 |
| Stellar metallicity | [Fe/H] | 0.144 ± 0.077 |
| Stellar radius | R* (R⊙) | 0.813 ± 0.028 |
| Projected stellar rotation velocity | vsini (km s−1) | 2.2 ± 0.4 |
| Systemic radial velocity | γ (km s−1) | –9.6 ± 0.2 |
| Mid-transit time | T0 (HJDUTC) | 2 455 748.83344 ± 0.00018 |
| Orbital period | P (d) | 3.8681382 ± 0.0000017 |
| Transit duration | T14 (d) | 0.0929 ± 0.0012 |
| Ingress/egress duration | T12 = T34 (d) | 0.0192 ± 0.0014 |
| Orbital inclination | i (deg) | 86.71 ± 0.20 |
| Semi-major axis | a (au) | 0.04525 ± 0.00053 |
| Planet mass | Mp (MJup) | 0.260 ±0.017 |
| Planet radius | Rp (RJup) | 1.057 ± 0.047 |
| Planet surface gravity | log gp (cgs) | 2.726 ± 0.046 |
| Planet to star area ratio | (Rp/R*)2 | 0.01786 ± 0.00042 |
| Planetary equilibrium temperature | Teq (ABond = 0.0, 0.3, 0.6) (K) | (964, 882, 767) |
Notes. (a) To constrain possible planetary equilibrium temperatures, we performed analytical calculations (Seager et al. 2005) assuming efficient heat circulation and different Bond albedos, ABond. All other values are adopted from Anderson et al. (2014).
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