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Exoplanet TOI-4311 b
Exoplanet TOI-4311 b orbits star TOI-4311 that lies 440 light years away from the Sun.
It weighs about 4.5 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
440 light years
440 light years
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TOI-4311 b
Exoplanet, super-earth, ultra-short period
Star: TOI-4311
Distance from the star: 0.01817 AU
Orbit around star: 0.990273 days
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Orbital period
Orbital period of exoplanet TOI-4311 b around its star is 0.990273 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: 4.5 M Earth
Exoplanet mass
Exoplanet TOI-4311 b has 4.5 Earth masses, or 0.31 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: 1.376 R Earth | 0.1 R Jupiter
Density: 9523 kg/m3 | 172.74 % Earth
Temperature: 1664 K | 1390.85 °C
Year of discovery: 2026 (transit)
Other designations of this exoplanet
TOI-4311 b, 2MASS J02464430-3110468 b, Gaia DR3 5064693746900436736 b, TIC 122617317 b, LP 886-41 b
TOI-4311 b, 2MASS J02464430-3110468 b, Gaia DR3 5064693746900436736 b, TIC 122617317 b, LP 886-41 b
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TOI-4311 system structure
Exoplanet TOI-4311 b orbits star TOI-4311, which has lower mass than Sun. It is one of 3 known exoplanets orbiting this star.
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TOI-4311 | ||||||||
| TOI-4311 b | 0.02 AU | 4.5 M⊕ | 1.4 R⊕ | 1 days | |||||
| TOI-4311 c | 0.11 AU | 13.6 M⊕ | 2.5 R⊕ | 15.1 days | |||||
| TOI-4311 d unconfirmed |
0.21 AU | 26.4 M⊕ | 38.9 days | ||||||
Comparison
When comparing to the Solar system planets, TOI-4311 b has 31 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 81.82 | 5.52 | 4.5 | 40.91 | 0.01 | 0.05 | 0.31 | 0.26 |
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Size | 3.59 | 1.45 | 1.38 | 2.6 | 0.12 | 0.15 | 0.34 | 0.36 |
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Density | 1.76 | 1.82 | 1.73 | 2.34 | 7.65 | 13.67 | 7.57 | 5.51 |
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Distance | 0.05 | 0.03 | 0.02 | 0.01 | 0 | 0 | 0 | 0 |
|
Temperature | 3.78 | 2.26 | 5.78 | 8 | 10.21 | 12.51 | 21.33 | 23.11 |
Habitability
Habitable zone of the star: 0.6 - 0.86 AU
The planet orbits too close to its star and is exposed to extreme temperatures and radiation prohibiting life as we know it.