The gam1 Leo system contains 1 exoplanet. It is located 130.10 light years away from the solar system.
| Mass | 1.23 solar masses |
| Radius | 31.88 solar radiae |
| Temperature | 4330 kelvin |
| Stellar Metallicity | -0.469 decimal exponent |
| Age | 2.412 billion years |
At more than 50 Earth masses, gam1 Leo b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 2790.430 Earth masses |
| Density | 7.850 grams per cubic centimeter |
| Radius | 12.500 Earth radiae |
| Semi-major Axis | 1.19 AU |
| Eccentricity | 0.144 |
| Orbital Period | 428.500 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Bohyunsan Optical Astronomical Observatory |
| Discovery Telescope | 1.8 m Telescope |
| Discovery Instrument | BOES Echelle Spectrograph |
| Discovery Date | 2010-01 |
| Reference | Han et al. 2010 |