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Exoplanet Gliese 3138 b
Exoplanet Gliese 3138 b orbits star Gliese 3138 that lies 93 light years away from the Sun.
It weighs about 4.196 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
93 light years
93 light years
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Gliese 3138 b
Exoplanet
Star: Gliese 3138
Distance from the star: 0.057 AU
Orbit around star: 5.974 days
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Orbital period
Orbital period of exoplanet Gliese 3138 b around its star is 5.974 days.
The orbital period of an exoplanet is the time it takes to complete one full orbit around its star, usually measured in days. Most of the exoplanets discovered so far have orbital periods of less than one year...
More about Orbital period in StellarGuide
Basic characteristic
Mass: 4.196 M Earth
Exoplanet mass
Exoplanet Gliese 3138 b has 4.196 Earth masses, or 0.29 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
Year of discovery: 2017 (radial velocity)
Other designations of this exoplanet
GJ 3138 b, BD-17 400 b, LHS 1346 b, HIC 10037 b, HIP 10037 b, LFT 183 b, L 728-10 b, LTT 1117 b, NLTT 7162 b, 2MASS J02091086-1620229 b, TIC 290172418 b, TYC 5859-1512-1 b
GJ 3138 b, BD-17 400 b, LHS 1346 b, HIC 10037 b, HIP 10037 b, LFT 183 b, L 728-10 b, LTT 1117 b, NLTT 7162 b, 2MASS J02091086-1620229 b, TIC 290172418 b, TYC 5859-1512-1 b
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Gliese 3138 system structure
Exoplanet Gliese 3138 b orbits star Gliese 3138, which has lower mass than Sun. It is one of 3 known exoplanets orbiting this star.
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Gliese 3138 | ||||||||
| Gliese 3138 c | 0.02 AU | 1.8 M⊕ | 1.2 days | ||||||
| Gliese 3138 b | 0.06 AU | 4.2 M⊕ | 6 days | ||||||
| Gliese 3138 d | 0.7 AU | 10.5 M⊕ | 257.8 days | ||||||
Comparison
When comparing to the Solar system planets, Gliese 3138 b has 29 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 76.29 | 5.15 | 4.2 | 38.15 | 0.01 | 0.04 | 0.29 | 0.24 |
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Distance | 0.15 | 0.08 | 0.06 | 0.04 | 0.01 | 0.01 | 0 | 0 |
Habitability
Habitable zone of the star: 0.23 - 0.33 AU
The planet is too hot to sustain liquid water.