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Exoplanet Alpha Arietis b
Exoplanet Alpha Arietis b orbits star Alpha Arietis that lies 66 light years away from the Sun.
It weighs about 572.233 Earth masses and orbits its star further than Earth orbits Sun.
Sun distance
66 light years
66 light years
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Alpha Arietis b
Exoplanet, gas giant
Star: Alpha Arietis
Distance from the star: 1.2 AU
Orbit around star: 380.8 days
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Orbital period
Orbital period of exoplanet Alpha Arietis b around its star is 380.8 days (or 1 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
Eccentricity: 0.25Basic characteristic
Mass: 572.233 M Earth
| 1.8006 M Jupiter
Exoplanet mass
Exoplanet Alpha Arietis b has 572.233 Earth masses (or 1.8006 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: 2011 (radial velocity)
Other designations of this exoplanet
Hemal b, Hamal b, Ras Hammel b, El Nath b, Arietis b, α Ari b, Alpha Arietis b, Alpha Ari b, 13 Arietis b, 13 Ari b, BD+22 306 b, FK5 74 b, GC 2538 b, GJ 84.3 b, GJ 9072 b, Gliese 9072 b, HD 12929 b, HIP 9884 b, HR 617 b, LTT 10711 b, NLTT 7032 b, PPM 91373 b, SAO 75151 b
Hemal b, Hamal b, Ras Hammel b, El Nath b, Arietis b, α Ari b, Alpha Arietis b, Alpha Ari b, 13 Arietis b, 13 Ari b, BD+22 306 b, FK5 74 b, GC 2538 b, GJ 84.3 b, GJ 9072 b, Gliese 9072 b, HD 12929 b, HIP 9884 b, HR 617 b, LTT 10711 b, NLTT 7032 b, PPM 91373 b, SAO 75151 b
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Alpha Arietis system structure
Exoplanet Alpha Arietis b orbits star Alpha Arietis, which has bigger mass than Sun. It is the only known exoplanet orbiting this star
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Alpha Arietis | ||||||||
| Alpha Arietis b | 1.2 AU | 572.2 M⊕ | 380.8 days | ||||||
Comparison
When comparing to the Solar system planets, Alpha Arietis b has 1.8 times the mass of Jupiter and it orbits its star between distances of Earth and Mars from the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 10404.24 | 702.13 | 572.23 | 5202.12 | 1.8 | 6.01 | 39.19 | 33.27 |
|
Distance | 3.08 | 1.66 | 1.2 | 0.79 | 0.23 | 0.13 | 0.06 | 0.04 |
Habitability
Habitable zone of the star: 16.8 - 24.3 AU
The planet is too hot to sustain liquid water.