The GJ 649 system contains 1 exoplanet. It is located 33.85 light years away from the solar system.
| Mass | 0.54 solar masses |
| Radius | 0.5 solar radiae |
| Temperature | 3700 kelvin |
| Stellar Metallicity | 0.08 decimal exponent |
| Age | 0.44 billion years |
At more than 50 Earth masses, GJ 649 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 104.244 Earth masses |
| Density | 0.293 grams per cubic centimeter |
| Radius | 12.500 Earth radiae |
| Semi-major Axis | 1.135 AU |
| Eccentricity | 0.3 |
| Orbital Period | 598.300 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2010-02 |
| Reference | Johnson et al. 2010 |