The HD 149143 system contains 1 exoplanet. It is located 239.01 light years away from the solar system.
| Mass | 1.2 solar masses |
| Radius | 1.44 solar radiae |
| Temperature | 5856 kelvin |
| Stellar Metallicity | 0.29 decimal exponent |
| Age | 4.28 billion years |
At more than 50 Earth masses, HD 149143 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 422.714 Earth masses |
| Density | 0.923 grams per cubic centimeter |
| Radius | 13.600 Earth radiae |
| Semi-major Axis | 0.053 AU |
| Eccentricity | 0.0167 |
| Orbital Period | 4.072 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Haute-Provence Observatory |
| Discovery Telescope | 1.93 m Telescope |
| Discovery Instrument | ELODIE Spectrograph |
| Discovery Date | 2006-02 |
| Reference | da Silva et al. 2006 |