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Exoplanet HD 31221 b
Exoplanet HD 31221 b orbits star HD 31221 that lies 405 light years away from the Sun.
It weighs about 3814.884 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
405 light years
405 light years
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HD 31221 b
Exoplanet, gas giant
Star: HD 31221
Orbit around star: 4.66632 days
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Orbital period
Orbital period of exoplanet HD 31221 b around its star is 4.66632 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
Basic characteristic
Mass: 3814.884 M Earth
| 12.0040 M Jupiter
Exoplanet mass
Exoplanet HD 31221 b has 3814.884 Earth masses (or 12.0040 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
Size: 14.796 R Earth | 1.3 R Jupiter
Density: 6493 kg/m3 | 117.78 % Earth
Year of discovery: 2023 (transit)Advertisement
HD 31221 system structure
Exoplanet HD 31221 b orbits star HD 31221, which has bigger mass than Sun. It is the only known exoplanet orbiting this star
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HD 31221 | ||||||||
| HD 31221 b | n/a | 3814.9 M⊕ | 14.8 R⊕ | 4.7 days | |||||
Comparison
When comparing to the Solar system planets, HD 31221 b has % of mass of
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 69361.53 | 4680.84 | 3814.88 | 34680.76 | 12 | 40.07 | 261.29 | 221.8 |
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Size | 38.64 | 15.57 | 14.8 | 27.92 | 1.32 | 1.63 | 3.7 | 3.89 |
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Density | 1.2 | 1.24 | 1.18 | 1.59 | 5.22 | 9.32 | 5.16 | 3.76 |