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Exoplanet HIP 29442 b
Exoplanet HIP 29442 b orbits star HIP 29442 that lies 222 light years away from the Sun.
It weighs about 9.6 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
222 light years
222 light years
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HIP 29442 b
Exoplanet, sub-neptune
Star: HIP 29442
Distance from the star: 0.1070 AU
Orbit around star: 13.63083 days
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Orbital period
Orbital period of exoplanet HIP 29442 b around its star is 13.63083 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: 9.6 M Earth
Exoplanet mass
Exoplanet HIP 29442 b has 9.6 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: 3.48 R Earth | 0.3 R Jupiter
Density: 1256 kg/m3 | 22.78 % Earth
Temperature: 777 K | 503.85 °C
Year of discovery: 2023 (transit)
Other designations of this exoplanet
TOI-469 b
TOI-469 b
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HIP 29442 system structure
Exoplanet HIP 29442 b orbits star HIP 29442, which has lower mass than Sun. It is one of 3 known exoplanets orbiting this star.
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HIP 29442 | ||||||||
| HIP 29442 c | 0.04 AU | 4.5 M⊕ | 1.6 R⊕ | 3.5 days | |||||
| HIP 29442 d | 0.06 AU | 5.1 M⊕ | 1.4 R⊕ | 6.4 days | |||||
| HIP 29442 b | 0.11 AU | 9.6 M⊕ | 3.5 R⊕ | 13.6 days | |||||
Comparison
When comparing to the Solar system planets, HIP 29442 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 | 174.55 | 11.78 | 9.6 | 87.27 | 0.03 | 0.1 | 0.66 | 0.56 |
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Size | 9.09 | 3.66 | 3.48 | 6.57 | 0.31 | 0.38 | 0.87 | 0.92 |
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Density | 0.23 | 0.24 | 0.23 | 0.31 | 1.01 | 1.8 | 1 | 0.73 |
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Distance | 0.27 | 0.15 | 0.11 | 0.07 | 0.02 | 0.01 | 0.01 | 0 |
|
Temperature | 1.77 | 1.05 | 2.7 | 3.74 | 4.77 | 5.84 | 9.96 | 10.79 |
Habitability
Habitable zone of the star: 1 - 1.5 AU
The planet is too hot to sustain liquid water.
The planet is bigger than Earth and smaller than Neptune. Its average density 1256 kg/m3 points to a hot gas planet.