Table 1
Physical properties of the GJ 3470 system.
| Parameters | Symbol | Value | Reference | |||
|---|---|---|---|---|---|---|
| Distance from Earth | D* | 29.45 ± 0.07 pc | ||||
| Star radius | R* | 0.547 ± 0.018 R⊙ | Awiphan et al. 2016 | |||
| Star mass | M* |  M⊙ |
Demory et al. 2013 | |||
| Star rotation period | P* | 20.70 ± 0.15 d | Biddle et al. 2014 | |||
| Star age | τ* | ~2 Gyr | This work | |||
| Heliocentric stellar radial velocity | γ*∕⊙ | 26.51691 ± 5.3 × 10−4 km s−1 | Bonfils et al. 2012 | |||
| Planet radius (358 nm) | Rp | 4.8 ± 0.2 REarth | Chen et al. 2017 | |||
| Planet mass | Mp | 13.9 ± 1.5 MEarth | Demory et al. 2013 | |||
| Orbital period | Pp | 3.33665173 ± 5.9 × 10−7 days | Chen et al. 2017 | |||
| Transit center | T0 | 2455983.70417 ± 0.00011 BJDTDB | Chen et al. 2017 | |||
| Semi-major axis | ap | 0.0355 ± 0.0019 au | Awiphan et al. 2016 | |||
| Eccentricity | e |  |
||||
| Argument of periastron | ω |  |
||||
| Inclination | ip |  |
Awiphan et al. 2016 | |||
Notes. The distance from GJ 3470 was derived from its Gaia parallax measurement (33.96 ± 0.06 mas; Gaia Collaboration 2016, 2018). The values for e and ω were derived from radial velocity measurements of GJ 3470 (X. Bonfils, priv. comm.).