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Exoplanet Vega b
(Unconfirmed Exoplanet)
Vega b is an unconfirmed exoplanet detected around star Vega. More observations are needed to confirm its existence.
Sun distance
25 light years
25 light years
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Vega b
Exoplanet
Star: Vega
Distance from the star: 0.04555 AU
Orbit around star: 2.42977 days
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Orbital period
Orbital period of exoplanet Vega b around its star is 2.42977 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: 0.25Basic characteristic
Mass: 21.9 M Earth
Exoplanet mass
Exoplanet Vega b has 21.9 Earth masses, or 1.27 times the mass of Neptune.
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: 2021
Other designations of this exoplanet
Alpha Lyrae b, Lucida Lyrae b, Gliese 721 b, GJ 721 b, Wega b, α Lyrae b, 3 Lyrae b, BD+38°3238 b, GCTP 4293.00 b, HD 172167 b, HIC 91262 b, HIP 91262 b, HR 7001 b, LTT 15486 b, SAO 67174 b
Alpha Lyrae b, Lucida Lyrae b, Gliese 721 b, GJ 721 b, Wega b, α Lyrae b, 3 Lyrae b, BD+38°3238 b, GCTP 4293.00 b, HD 172167 b, HIC 91262 b, HIP 91262 b, HR 7001 b, LTT 15486 b, SAO 67174 b
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Vega system structure
Exoplanet Vega b orbits star Vega, which has bigger mass than Sun. It is the only known exoplanet orbiting this star
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Vega | ||||||||
| Vega b unconfirmed |
0.05 AU | 21.9 M⊕ | 2.4 days | ||||||
| Vega Inner disk | 37 AU | 74 R⊕ | - | ||||||
| Vega Outer disk | 124 AU | 92 R⊕ | - | ||||||
Comparison
When comparing to the Solar system planets, Vega b has 1.27 times the mass of Neptune and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 398.18 | 26.87 | 21.9 | 199.09 | 0.07 | 0.23 | 1.5 | 1.27 |
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Distance | 0.12 | 0.06 | 0.05 | 0.03 | 0.01 | 0 | 0 | 0 |
Habitability
Habitable zone of the star: 7.3 - 10.5 AU
The planet is too hot to sustain liquid water.
News from this star system
11. 03 2021
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