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Exoplanet HD 23439 A b
(Unconfirmed Exoplanet)
HD 23439 A b is an unconfirmed exoplanet detected around star HD 23439 A. More observations are needed to confirm its existence.
Sun distance
78 light years
78 light years
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HD 23439 A b
Exoplanet
Star: HD 23439 A
Distance from the star: 0.2131 AU
Orbit around star: 45.68 days
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Orbital period
Orbital period of exoplanet HD 23439 A b around its star is 45.68 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: 0.5Basic characteristic
Mass: 9.219 M Earth
Exoplanet mass
Exoplanet HD 23439 A b has 9.219 Earth masses, or 0.63 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: 2020 (radial velocity)
Other designations of this exoplanet
*V580 Per b, GJ 1064 A b, GJ 9130 A b, Gliese 1064 A b, Gliese 9130 A b
*V580 Per b, GJ 1064 A b, GJ 9130 A b, Gliese 1064 A b, Gliese 9130 A b
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HD 23439 system structure
Exoplanet HD 23439 A b orbits star HD 23439 A, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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HD 23439 A | ||||||||
| HD 23439 A b unconfirmed |
0.21 AU | 9.2 M⊕ | 45.7 days | ||||||
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HD 23439 B | ||||||||
Comparison
When comparing to the Solar system planets, HD 23439 A b has 63 % 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 | 167.62 | 11.31 | 9.22 | 83.81 | 0.03 | 0.1 | 0.63 | 0.54 |
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Distance | 0.55 | 0.29 | 0.21 | 0.14 | 0.04 | 0.02 | 0.01 | 0.01 |
Habitability
Habitable zone of the star: 0.69 - 0.99 AU
The planet is too hot to sustain liquid water.