The HAT-P-39 system contains 1 exoplanet. It is located 2273.32 light years away from the solar system.
| Mass | 1.4 solar masses |
| Radius | 1.62 solar radiae |
| Temperature | 6430 kelvin |
| Stellar Metallicity | 0.19 decimal exponent |
| Age | 2 billion years |
At more than 50 Earth masses, HAT-P-39 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 190.372 Earth masses |
| Density | 0.190 grams per cubic centimeter |
| Radius | 17.609 Earth radiae |
| Semi-major Axis | 0.0509 AU |
| Eccentricity | 0 |
| Orbital Period | 3.544 days |
| Discovery Method | Transit |
| Discovery Facility | HATNet |
| Discovery Telescope | Canon 200mm f/1.8L |
| Discovery Instrument | 2K CCD Sensor |
| Discovery Date | 2012-11 |
| Reference | Hartman et al. 2012 |