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Exoplanet Gliese 229 A b
Exoplanet Gliese 229 A b orbits star Gliese 229 A that lies 19 light years away from the Sun.
It weighs about 10.2 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
19 light years
19 light years
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Gliese 229 A b
Exoplanet
Star: Gliese 229 A
Distance from the star: 0.896 AUBasic characteristic
Mass: 10.2 M Earth
Exoplanet mass
Exoplanet Gliese 229 A b has 10.2 Earth masses, or 0.7 times the mass of Uranus.
The mass of an exoplanet is one of the most important characteristics for understanding what kind of world it is — whether it’s small and rocky like Earth or large and gaseous like Jupiter. Mass provides key information about the planet’s composition, gravity, and formation history...
More about Exoplanet mass in StellarGuide
Other designations of this exoplanet
HD 42581 b, HIP 29295 b, LHS 1827 b, NSV 2863 b, SAO 171334 b, TYC 5945-765-1 b, WISE J061034.53-215200.3 b, GJ 229 b
HD 42581 b, HIP 29295 b, LHS 1827 b, NSV 2863 b, SAO 171334 b, TYC 5945-765-1 b, WISE J061034.53-215200.3 b, GJ 229 b
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Gliese 229 system structure
Exoplanet Gliese 229 A b orbits star Gliese 229 A, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
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Gliese 229 A | ||||||||
| Gliese 229 A c | 0.34 AU (HZ) | 7.9 M⊕ | 122 days | ||||||
| Gliese 229 A b | 0.9 AU | 10.2 M⊕ | - | ||||||
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Gliese 229 Ba | ||||||||
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Gliese 229 Bb | ||||||||
Comparison
When comparing to the Solar system planets, Gliese 229 A b has 70 % of mass of Uranus and it orbits its star a little closer than Earth.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 185.45 | 12.52 | 10.2 | 92.73 | 0.03 | 0.11 | 0.7 | 0.59 |
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Distance | 2.3 | 1.24 | 0.9 | 0.59 | 0.17 | 0.09 | 0.05 | 0.03 |
Habitability
Habitable zone of the star: 0.29 - 0.41 AU
The planet is too cold to sustain liquid water on its surface. It is however possible that there is environment with higher temperatures on some of its potential moons.