The WISEP J121756.91+162640.2 A system contains 1 exoplanet. It is located 32.94 light years away from the solar system.
| Mass | 0.03 solar masses |
| Radius | 0.09 solar radiae |
| Temperature | 575 kelvin |
| Stellar Metallicity | - decimal exponent |
| Age | 6 billion years |
At more than 50 Earth masses, WISEP J121756.91+162640.2 A b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 6992.000 Earth masses |
| Density | 33.500 grams per cubic centimeter |
| Radius | 10.468 Earth radiae |
| Semi-major Axis | 8 AU |
| Eccentricity | NaN |
| Orbital Period | NaN days |
| Discovery Method | Imaging |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck II Telescope |
| Discovery Instrument | NIRC2 Camera |
| Discovery Date | 2012-10 |
| Reference | Liu et al. 2013 |