The HAT-P-38 system contains 1 exoplanet. It is located 832.37 light years away from the solar system.
| Mass | 0.89 solar masses |
| Radius | 0.92 solar radiae |
| Temperature | 5330 kelvin |
| Stellar Metallicity | 0.06 decimal exponent |
| Age | 10.1 billion years |
At more than 50 Earth masses, HAT-P-38 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 84.857 Earth masses |
| Density | 0.590 grams per cubic centimeter |
| Radius | 9.247 Earth radiae |
| Semi-major Axis | 0.0523 AU |
| Eccentricity | 0.067 |
| Orbital Period | 4.640 days |
| Discovery Method | Transit |
| Discovery Facility | HATNet |
| Discovery Telescope | Canon 200mm f/1.8L |
| Discovery Instrument | 2K CCD Sensor |
| Discovery Date | 2012-10 |
| Reference | Sato et al. 2012 |