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Exoplanet HD 18143 A b
Exoplanet HD 18143 A b orbits star HD 18143 A that lies 73 light years away from the Sun.
It weighs about 10.809 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
73 light years
73 light years
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HD 18143 A b
Exoplanet
Star: HD 18143 A
Distance from the star: 0.088 AU
Orbit around star: 10.3 days
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Orbital period
Orbital period of exoplanet HD 18143 A b around its star is 10.3 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: 0.224Basic characteristic
Mass: 10.809 M Earth
Exoplanet mass
Exoplanet HD 18143 A b has 10.809 Earth masses, or 0.74 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
Year of discovery: 2022 (radial velocity)
Other designations of this exoplanet
GJ 9105 b, LDS 883 b, STF 326 b, Gliese 9105 b
GJ 9105 b, LDS 883 b, STF 326 b, Gliese 9105 b
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HD 18143 system structure
Exoplanet HD 18143 A b orbits star HD 18143 A, which has lower mass than Sun. It is one of 2 known exoplanets orbiting this star.
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HD 18143 A | ||||||||
| HD 18143 A b | 0.09 AU | 10.8 M⊕ | 10.3 days | ||||||
| HD 18143 A c | 17.53 AU | 3178.4 M⊕ | 28982.4 days | ||||||
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HD 18143 B | ||||||||
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HD 18143 C | ||||||||
Comparison
When comparing to the Solar system planets, HD 18143 A b has 74 % 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 | 196.53 | 13.26 | 10.81 | 98.26 | 0.03 | 0.11 | 0.74 | 0.63 |
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Distance | 0.23 | 0.12 | 0.09 | 0.06 | 0.02 | 0.01 | 0 | 0 |
Habitability
Habitable zone of the star: 0.79 - 1.1 AU
The planet is too hot to sustain liquid water.