The HD 2039 system contains 1 exoplanet. It is located 279.49 light years away from the solar system.
| Mass | 1.23 solar masses |
| Radius | 1.19 solar radiae |
| Temperature | 5945 kelvin |
| Stellar Metallicity | 0.3 decimal exponent |
| Age | 6 billion years |
At more than 50 Earth masses, HD 2039 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 1999.151 Earth masses |
| Density | 5.360 grams per cubic centimeter |
| Radius | 12.700 Earth radiae |
| Semi-major Axis | 2.2 AU |
| Eccentricity | 0.71 |
| Orbital Period | 1120.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Anglo-Australian Telescope |
| Discovery Telescope | 3.9 m Anglo-Australian Telescope |
| Discovery Instrument | UCLES Spectrograph |
| Discovery Date | 2003-04 |
| Reference | Tinney et al. 2003 |