The HD 13931 system contains 1 exoplanet. It is located 154.59 light years away from the solar system.
| Mass | 1.3 solar masses |
| Radius | 1.25 solar radiae |
| Temperature | 5867 kelvin |
| Stellar Metallicity | 0.05 decimal exponent |
| Age | 8.4 billion years |
At more than 50 Earth masses, HD 13931 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 699.226 Earth masses |
| Density | 1.630 grams per cubic centimeter |
| Radius | 13.300 Earth radiae |
| Semi-major Axis | 5.15 AU |
| Eccentricity | 0.02 |
| Orbital Period | 4218.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2010-10 |
| Reference | Howard et al. 2010 |