The HD 181433 system contains 3 exoplanets. It is located 87.66 light years away from the solar system.
| Mass | 0.63 solar masses |
| Radius | 0.79 solar radiae |
| Temperature | 4918 kelvin |
| Stellar Metallicity | 0.38 decimal exponent |
| Age | 6.7 billion years |
At more than 10 Earth masses, HD 181433 b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 6.357 Earth masses |
| Density | 2.530 grams per cubic centimeter |
| Radius | 2.400 Earth radiae |
| Semi-major Axis | 0.08 AU |
| Eccentricity | 0.4 |
| Orbital Period | 9.374 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2009-03 |
| Reference | Bouchy et al. 2009 |
At more than 50 Earth masses, HD 181433 c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 203.000 Earth masses |
| Density | 0.398 grams per cubic centimeter |
| Radius | 14.100 Earth radiae |
| Semi-major Axis | 1.76 AU |
| Eccentricity | 0.28 |
| Orbital Period | 962.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2009-03 |
| Reference | Bouchy et al. 2009 |
At more than 50 Earth masses, HD 181433 d is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 171.000 Earth masses |
| Density | 0.328 grams per cubic centimeter |
| Radius | 14.200 Earth radiae |
| Semi-major Axis | 3 AU |
| Eccentricity | 0.48 |
| Orbital Period | 2172.000 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | La Silla Observatory |
| Discovery Telescope | 3.6 m ESO Telescope |
| Discovery Instrument | HARPS Spectrograph |
| Discovery Date | 2009-03 |
| Reference | Bouchy et al. 2009 |