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Exoplanet G 2-21 b
Exoplanet G 2-21 b orbits star G 2-21 that lies 93 light years away from the Sun.
It weighs about 4.9 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
93 light years
93 light years
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G 2-21 b
Exoplanet, super-earth
Star: G 2-21
Orbit around star: 5.879577 days
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Orbital period
Orbital period of exoplanet G 2-21 b around its star is 5.879577 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: 4.9 M Earth
Exoplanet mass
Exoplanet G 2-21 b has 4.9 Earth masses, or 0.34 times the mass of Uranus.
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: 1.77 R Earth | 0.2 R Jupiter
Density: 4872 kg/m3 | 88.37 % Earth
Temperature: 511 K | 237.85 °C
Year of discovery: 2026 (transit)
Other designations of this exoplanet
TOI-4529 b, Karmn J01078 128 b, TIC 384888319 b
TOI-4529 b, Karmn J01078 128 b, TIC 384888319 b
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Comparison
When comparing to the Solar system planets, G 2-21 b has 34 % of mass of Uranus
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 89.09 | 6.01 | 4.9 | 44.55 | 0.02 | 0.05 | 0.34 | 0.28 |
|
Size | 4.62 | 1.86 | 1.77 | 3.34 | 0.16 | 0.19 | 0.44 | 0.47 |
|
Density | 0.9 | 0.93 | 0.88 | 1.2 | 3.92 | 6.99 | 3.87 | 2.82 |
|
Temperature | 1.16 | 0.69 | 1.77 | 2.46 | 3.13 | 3.84 | 6.55 | 7.1 |