The HD 181342 system contains 1 exoplanet. It is located 392.66 light years away from the solar system.
| Mass | 1.69 solar masses |
| Radius | 4.71 solar radiae |
| Temperature | 4945 kelvin |
| Stellar Metallicity | 0.26 decimal exponent |
| Age | 1.8 billion years |
At more than 50 Earth masses, HD 181342 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 807.288 Earth masses |
| Density | 1.930 grams per cubic centimeter |
| Radius | 13.200 Earth radiae |
| Semi-major Axis | 1.592 AU |
| Eccentricity | 0.022 |
| Orbital Period | 564.100 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | W. M. Keck Observatory |
| Discovery Telescope | 10 m Keck I Telescope |
| Discovery Instrument | HIRES Spectrometer |
| Discovery Date | 2010-05 |
| Reference | Johnson et al. 2010 |