The HD 90156 system contains 1 exoplanet. It is located 71.59 light years away from the solar system.
| Mass | 0.84 solar masses |
| Radius | 0.92 solar radiae |
| Temperature | 5599 kelvin |
| Stellar Metallicity | -0.24 decimal exponent |
| Age | 4.4 billion years |
At more than 10 Earth masses, HD 90156 b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 17.980 Earth masses |
| Density | 1.140 grams per cubic centimeter |
| Radius | 4.430 Earth radiae |
| Semi-major Axis | 0.25 AU |
| Eccentricity | 0.31 |
| Orbital Period | 49.770 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2011-02 |
| Reference | Mordasini et al. 2011 |