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Exoplanet HIP 9618 b
Exoplanet HIP 9618 b orbits star HIP 9618 that lies 219 light years away from the Sun.
It weighs about 10.0 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
219 light years
219 light years
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HIP 9618 b
Exoplanet, sub-neptune
Star: HIP 9618
Distance from the star: 0.1438 AU
Orbit around star: 20.77290 days
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Orbital period
Orbital period of exoplanet HIP 9618 b around its star is 20.77290 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
Eccentricity: 0.22Basic characteristic
Mass: 10.0 M Earth
Exoplanet mass
Exoplanet HIP 9618 b has 10.0 Earth masses, or 0.68 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: 3.9 R Earth | 0.3 R Jupiter
Density: 929 kg/m3 | 16.85 % Earth
Temperature: 663 K | 389.85 °C
Year of discovery: 2023
Other designations of this exoplanet
HD 12572 b, TOI-1471 b, TIC 306263608 b
HD 12572 b, TOI-1471 b, TIC 306263608 b
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HIP 9618 system structure
Exoplanet HIP 9618 b orbits star HIP 9618, which has bigger mass than Sun. It is one of 2 known exoplanets orbiting this star.
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|
HIP 9618 | ||||||||
| HIP 9618 b | 0.14 AU | 10 M⊕ | 3.9 R⊕ | 20.8 days | |||||
| HIP 9618 c | 0.27 AU | 18.3 M⊕ | 3.3 R⊕ | 52.6 days | |||||
Comparison
When comparing to the Solar system planets, HIP 9618 b has 68 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 181.82 | 12.27 | 10 | 90.91 | 0.03 | 0.11 | 0.68 | 0.58 |
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Size | 10.19 | 4.11 | 3.9 | 7.36 | 0.35 | 0.43 | 0.98 | 1.03 |
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Density | 0.17 | 0.18 | 0.17 | 0.23 | 0.75 | 1.33 | 0.74 | 0.54 |
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Distance | 0.37 | 0.2 | 0.14 | 0.09 | 0.03 | 0.02 | 0.01 | 0 |
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Temperature | 1.51 | 0.9 | 2.3 | 3.19 | 4.07 | 4.98 | 8.5 | 9.21 |
Habitability
Habitable zone of the star: 0.82 - 1.2 AU
The planet is too hot to sustain liquid water.
The planet is bigger than Earth and smaller than Neptune. Its average density 929 kg/m3 points to a hot gas planet.