The GJ 1148 system contains 2 exoplanets. It is located 35.92 light years away from the solar system.
| Mass | 0.34 solar masses |
| Radius | 0.36 solar radiae |
| Temperature | 3287 kelvin |
| Stellar Metallicity | 0.16 decimal exponent |
| Age | - billion years |
At more than 50 Earth masses, GJ 1148 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 96.700 Earth masses |
| Density | 0.315 grams per cubic centimeter |
| Radius | 11.900 Earth radiae |
| Semi-major Axis | 0.166 AU |
| Eccentricity | 0.38 |
| Orbital Period | 41.380 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2010-05 |
| Reference | Haghighipour et al. 2010 |
At more than 50 Earth masses, GJ 1148 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 68.060 Earth masses |
| Density | 0.409 grams per cubic centimeter |
| Radius | 9.710 Earth radiae |
| Semi-major Axis | 0.912 AU |
| Eccentricity | 0.342 |
| Orbital Period | 532.580 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Calar Alto Observatory |
| Discovery Telescope | 3.5 m telescope |
| Discovery Instrument | CARMENES |
| Discovery Date | 2018-02 |
| Reference | Trifonov et al. 2018 |