The HAT-P-55 system contains 1 exoplanet. It is located 1667.92 light years away from the solar system.
| Mass | 1.01 solar masses |
| Radius | 1.01 solar radiae |
| Temperature | 5808 kelvin |
| Stellar Metallicity | -0.03 decimal exponent |
| Age | 4.2 billion years |
At more than 50 Earth masses, HAT-P-55 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 184.977 Earth masses |
| Density | 0.435 grams per cubic centimeter |
| Radius | 13.249 Earth radiae |
| Semi-major Axis | 0.04604 AU |
| Eccentricity | 0.139 |
| Orbital Period | 3.585 days |
| Discovery Method | Transit |
| Discovery Facility | HATNet |
| Discovery Telescope | Canon 200mm f/1.8L |
| Discovery Instrument | 2K CCD Sensor |
| Discovery Date | 2015-09 |
| Reference | Juncher et al. 2015 |