The HN Peg system contains 1 exoplanet. It is located 59.09 light years away from the solar system.
| Mass | 1.08 solar masses |
| Radius | 1.01 solar radiae |
| Temperature | 6186 kelvin |
| Stellar Metallicity | -0.036 decimal exponent |
| Age | 0.3 billion years |
At more than 50 Earth masses, HN Peg b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 6991.570 Earth masses |
| Density | 23.500 grams per cubic centimeter |
| Radius | 11.777 Earth radiae |
| Semi-major Axis | 773 AU |
| Eccentricity | NaN |
| Orbital Period | NaN days |
| Discovery Method | Imaging |
| Discovery Facility | Spitzer Space Telescope |
| Discovery Telescope | 0.85 m Spitzer Space Telescope |
| Discovery Instrument | IRAC Infrared Array Camera |
| Discovery Date | 2007-01 |
| Reference | Luhman et al. 2007 |