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Exoplanet Epsilon Eridani b
Exoplanet Epsilon Eridani b orbits star Epsilon Eridani that lies 11 light years away from the Sun.
It weighs about 247.967 Earth masses and orbits its star further than Earth orbits Sun.
Sun distance
11 light years
11 light years
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Epsilon Eridani b
Exoplanet, gas giant
Star: Epsilon Eridani
Distance from the star: 3.48 AU
Orbit around star: 2775 days
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Orbital period
Orbital period of exoplanet Epsilon Eridani b around its star is 2775 days (or 7.6 years).
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: 247.967 M Earth
| 0.7803 M Jupiter
Exoplanet mass
Exoplanet Epsilon Eridani b has 247.967 Earth masses (or 0.7803 Jupiter masses).
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: 175 K | -98.15 °C
Year of discovery: 2000 (radial velocity)
Other designations of this exoplanet
Ran b, Gliese 144 b, 18 Eridani b, BD -09°697 b, GCTP 742.00 b, HD 22049 b, HIP 16537 b, HR 1084 b, LHS 1557 b, SAO 130564 b, WDS 03330-0928 b, eps Eri b
Ran b, Gliese 144 b, 18 Eridani b, BD -09°697 b, GCTP 742.00 b, HD 22049 b, HIP 16537 b, HR 1084 b, LHS 1557 b, SAO 130564 b, WDS 03330-0928 b, eps Eri b
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Epsilon Eridani system structure
Exoplanet Epsilon Eridani b orbits star Epsilon Eridani, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
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Epsilon Eridani | ||||||||
| Epsilon Eridani asteroid belt | 2 AU | 1 R⊕ | - | ||||||
| Epsilon Eridani b | 3.48 AU | 248 M⊕ | 2775 days | ||||||
| Epsilon Eridani asteroid belt | 14 AU | 12 R⊕ | - | ||||||
| Epsilon Eridani c unconfirmed |
40 AU | 31.8 M⊕ | 102270 days | ||||||
| Epsilon Eridani Main belt | 70 AU | 10 R⊕ | - | ||||||
Comparison
When comparing to the Solar system planets, Epsilon Eridani b has 78 % of mass of Jupiter and it orbits its star a little closer than Jupiter.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 4508.49 | 304.25 | 247.97 | 2254.25 | 0.78 | 2.6 | 16.98 | 14.42 |
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Distance | 8.92 | 4.81 | 3.48 | 2.28 | 0.67 | 0.36 | 0.18 | 0.12 |
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Temperature | 0.4 | 0.24 | 0.61 | 0.84 | 1.07 | 1.32 | 2.24 | 2.43 |
Habitability
Habitable zone of the star: 0.7 - 1 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.
The planet is probably a gas giant and has no surface, however life could still be possible on the potential moons orbiting it.