The HD 203030 system contains 1 exoplanet. It is located 128.02 light years away from the solar system.
| Mass | 0.94 solar masses |
| Radius | 0.86 solar radiae |
| Temperature | 5603 kelvin |
| Stellar Metallicity | 0.3 decimal exponent |
| Age | 0.1 billion years |
At more than 50 Earth masses, HD 203030 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 3496.112 Earth masses |
| Density | 6.350 grams per cubic centimeter |
| Radius | 14.460 Earth radiae |
| Semi-major Axis | 487.1 AU |
| Eccentricity | NaN |
| Orbital Period | NaN days |
| Discovery Method | Imaging |
| Discovery Facility | Palomar Observatory |
| Discovery Telescope | 5.1 m Hale Telescope |
| Discovery Instrument | PHARO Camera |
| Discovery Date | 2006-11 |
| Reference | Metchev & Hillenbrand 2006 |