The GJ 328 system contains 1 exoplanet. It is located 66.95 light years away from the solar system.
| Mass | 0.69 solar masses |
| Radius | 0.65 solar radiae |
| Temperature | 3900 kelvin |
| Stellar Metallicity | 0 decimal exponent |
| Age | - billion years |
At more than 50 Earth masses, GJ 328 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 731.000 Earth masses |
| Density | 1.710 grams per cubic centimeter |
| Radius | 13.300 Earth radiae |
| Semi-major Axis | 4.5 AU |
| Eccentricity | 0.37 |
| Orbital Period | 4100.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | McDonald Observatory |
| Discovery Telescope | 9.2 m Hobby-Eberly Telescope |
| Discovery Instrument | High Resolution Spectrograph |
| Discovery Date | 2013-09 |
| Reference | Robertson et al. 2013 |