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Exoplanet Gamma Cephei A b
Exoplanet Gamma Cephei A b orbits star Gamma Cephei A that lies 45 light years away from the Sun.
It weighs about 3525.589 Earth masses and orbits its star further than Earth orbits Sun.
Sun distance
45 light years
45 light years
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Gamma Cephei A b
Exoplanet, gas giant
Star: Gamma Cephei A
Distance from the star: 2.05 AU
Orbit around star: 903.3 days
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Orbital period
Orbital period of exoplanet Gamma Cephei A b around its star is 903.3 days (or 2.5 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: 3525.589 M Earth
| 11.0937 M Jupiter
Exoplanet mass
Exoplanet Gamma Cephei A b has 3525.589 Earth masses (or 11.0937 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
Year of discovery: 1988 (radial velocity)
Other designations of this exoplanet
Errai b, 35 Cep b, Gl 903 b, Gliese 903 b, HR 8974 b, BD +76°928 b, HD 222404 b, GCTP 5725.00 b, SAO 10818 b, FK5 893 b, HIC 116727 b, HIP 116727 b, IRAS 23372+7721 b, 2MASS J23392083+7737563 b, TIC 367912480 b, TYC 4606-3584-1 b
Errai b, 35 Cep b, Gl 903 b, Gliese 903 b, HR 8974 b, BD +76°928 b, HD 222404 b, GCTP 5725.00 b, SAO 10818 b, FK5 893 b, HIC 116727 b, HIP 116727 b, IRAS 23372+7721 b, 2MASS J23392083+7737563 b, TIC 367912480 b, TYC 4606-3584-1 b
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Gamma Cephei system structure
Exoplanet Gamma Cephei A b orbits star Gamma Cephei A, which has bigger mass than Sun. It is the only known exoplanet orbiting this star
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Gamma Cephei A | ||||||||
| Gamma Cephei A b | 2.05 AU | 3525.6 M⊕ | 903.3 days | ||||||
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Gamma Cephei B | ||||||||
Comparison
When comparing to the Solar system planets, Gamma Cephei A b has % of mass of and it orbits its star between distances of Mars and Jupiter from the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 64101.62 | 4325.88 | 3525.59 | 32050.81 | 11.09 | 37.03 | 241.48 | 204.98 |
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Distance | 5.26 | 2.84 | 2.05 | 1.35 | 0.39 | 0.21 | 0.11 | 0.07 |
Habitability
Habitable zone of the star: 3.8 - 5.5 AU
The planet's orbit is close to hotter edge of the habitable zone of its star.