The HD 4208 system contains 1 exoplanet. It is located 111.52 light years away from the solar system.
| Mass | 0.88 solar masses |
| Radius | 0.85 solar radiae |
| Temperature | 5717 kelvin |
| Stellar Metallicity | -0.28 decimal exponent |
| Age | 3.813 billion years |
At more than 50 Earth masses, HD 4208 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 257.442 Earth masses |
| Density | 0.527 grams per cubic centimeter |
| Radius | 13.900 Earth radiae |
| Semi-major Axis | 1.662 AU |
| Eccentricity | 0.042 |
| Orbital Period | 832.970 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2002-03 |
| Reference | Vogt et al. 2002 |