The HD 4308 system contains 1 exoplanet. It is located 71.81 light years away from the solar system.
| Mass | 0.93 solar masses |
| Radius | 1.02 solar radiae |
| Temperature | 5686 kelvin |
| Stellar Metallicity | -0.35 decimal exponent |
| Age | 4.3 billion years |
At more than 10 Earth masses, HD 4308 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 | 15.892 Earth masses |
| Density | 1.250 grams per cubic centimeter |
| Radius | 4.120 Earth radiae |
| Semi-major Axis | 0.12 AU |
| Eccentricity | 0 |
| Orbital Period | 15.560 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2006-02 |
| Reference | Udry et al. 2006 |