The 47 UMa system contains 3 exoplanets. It is located 45.00 light years away from the solar system.
| Mass | 1.06 solar masses |
| Radius | 1.21 solar radiae |
| Temperature | 5872 kelvin |
| Stellar Metallicity | 0.04 decimal exponent |
| Age | 6.48 billion years |
At more than 50 Earth masses, 47 UMa b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 804.080 Earth masses |
| Density | 1.920 grams per cubic centimeter |
| Radius | 13.200 Earth radiae |
| Semi-major Axis | 2.1 AU |
| Eccentricity | 0.032 |
| Orbital Period | 1078.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Lick Observatory |
| Discovery Telescope | 3.0 m C. Donald Shane Telescope |
| Discovery Instrument | Hamilton Echelle Spectrograph |
| Discovery Date | 1996-06 |
| Reference | Butler & Marcy 1996 |
At more than 50 Earth masses, 47 UMa c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 171.621 Earth masses |
| Density | 0.329 grams per cubic centimeter |
| Radius | 14.200 Earth radiae |
| Semi-major Axis | 3.6 AU |
| Eccentricity | 0.098 |
| Orbital Period | 2391.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Lick Observatory |
| Discovery Telescope | 3.0 m C. Donald Shane Telescope |
| Discovery Instrument | Hamilton Echelle Spectrograph |
| Discovery Date | 2002-01 |
| Reference | Fischer et al. 2002 |
At more than 50 Earth masses, 47 UMa d is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 521.220 Earth masses |
| Density | 1.160 grams per cubic centimeter |
| Radius | 13.500 Earth radiae |
| Semi-major Axis | 11.6 AU |
| Eccentricity | 0.16 |
| Orbital Period | 14002.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Lick Observatory |
| Discovery Telescope | 3.0 m C. Donald Shane Telescope |
| Discovery Instrument | Hamilton Echelle Spectrograph |
| Discovery Date | 2010-04 |
| Reference | Gregory & Fischer 2010 |