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Exoplanet Gliese 555 b
Exoplanet Gliese 555 b orbits star Gliese 555 that lies 20 light years away from the Sun.
It weighs about 5.46 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
20 light years
20 light years
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Gliese 555 b
Exoplanet
Star: Gliese 555
Distance from the star: 0.1417 AU
Orbit around star: 36.116 days
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Orbital period
Orbital period of exoplanet Gliese 555 b around its star is 36.116 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
Eccentricity: 0.079Basic characteristic
Mass: 5.46 M Earth
Exoplanet mass
Exoplanet Gliese 555 b has 5.46 Earth masses, or 0.37 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
Temperature: 234 K | -39.15 °C
Year of discovery: 2023
Other designations of this exoplanet
Wolf 1481 b, HN Lib b, BD-11 3759 b, HIP 71253 b, Ci 20 870 b, LFT 1120 b, LHS 2945 b, LPM 532 b, LTT 5759 b, GJ 555 b
Wolf 1481 b, HN Lib b, BD-11 3759 b, HIP 71253 b, Ci 20 870 b, LFT 1120 b, LHS 2945 b, LPM 532 b, LTT 5759 b, GJ 555 b
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Gliese 555 system structure
Exoplanet Gliese 555 b orbits star Gliese 555, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
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Gliese 555 | ||||||||
| Gliese 555 b | 0.14 AU | 5.5 M⊕ | 36.1 days | ||||||
| Gliese 555 c | 0.3 AU | 9.7 M⊕ | 113.5 days | ||||||
Comparison
When comparing to the Solar system planets, Gliese 555 b has 37 % 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 | 99.27 | 6.7 | 5.46 | 49.64 | 0.02 | 0.06 | 0.37 | 0.32 |
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Distance | 0.36 | 0.2 | 0.14 | 0.09 | 0.03 | 0.01 | 0.01 | 0 |
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Temperature | 0.53 | 0.32 | 0.81 | 1.13 | 1.44 | 1.76 | 3 | 3.25 |
Habitability
Habitable zone of the star: 0.07 - 0.1 AU
The planet seems to be close to the outer edge of the habitable zone. It is probably very cold, but environment with higher temperatures might be possible.