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Exoplanet HD 307842 b
Exoplanet HD 307842 b orbits star HD 307842 that lies 211 light years away from the Sun.
It weighs about 9.67 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
211 light years
211 light years
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HD 307842 b
Exoplanet, super-earth
Star: HD 307842
Distance from the star: 0.038 AU
Orbit around star: 2.797034 days
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Orbital period
Orbital period of exoplanet HD 307842 b around its star is 2.797034 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: 9.67 M Earth
Exoplanet mass
Exoplanet HD 307842 b has 9.67 Earth masses, or 0.66 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: 1.93 R Earth | 0.2 R Jupiter
Density: 7416 kg/m3 | 134.52 % Earth
Year of discovery: 2023 (transit)
Other designations of this exoplanet
TOI 784 b, TIC 460984940 b
TOI 784 b, TIC 460984940 b
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HD 307842 system structure
Exoplanet HD 307842 b orbits star HD 307842, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
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|
HD 307842 | ||||||||
| HD 307842 b | 0.04 AU | 9.7 M⊕ | 1.9 R⊕ | 2.8 days | |||||
| HD 307842 c unconfirmed |
0.22 AU | 21.9 M⊕ | 42 days | ||||||
Comparison
When comparing to the Solar system planets, HD 307842 b has 66 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 175.82 | 11.87 | 9.67 | 87.91 | 0.03 | 0.1 | 0.66 | 0.56 |
|
Size | 5.04 | 2.03 | 1.93 | 3.64 | 0.17 | 0.21 | 0.48 | 0.51 |
|
Density | 1.37 | 1.42 | 1.35 | 1.82 | 5.96 | 10.65 | 5.9 | 4.29 |
|
Distance | 0.1 | 0.05 | 0.04 | 0.02 | 0.01 | 0 | 0 | 0 |
Habitability
Habitable zone of the star: 0.85 - 1.2 AU
The planet is too hot to sustain liquid water.