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Exoplanet HD 191939 f
(Unconfirmed Exoplanet)
HD 191939 f is an unconfirmed exoplanet detected around star HD 191939. More observations are needed to confirm its existence.
Sun distance
174 light years
174 light years
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HD 191939 f
Exoplanet, gas giant
Star: HD 191939
Distance from the star: 4.8 AU
Orbit around star: 4450 days
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Orbital period
Orbital period of exoplanet HD 191939 f around its star is 4450 days (or 12.2 years).
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: 660 M Earth
| 2.0768 M Jupiter
Exoplanet mass
Exoplanet HD 191939 f has 660 Earth masses (or 2.0768 Jupiter masses).
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
TOI 1339 f, HIP 99175 f, TIC 269701147 f
TOI 1339 f, HIP 99175 f, TIC 269701147 f
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HD 191939 system structure
Exoplanet HD 191939 f orbits star HD 191939, which has lower mass than Sun. It is one of 6 known exoplanets orbiting this star.
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HD 191939 | ||||||||
| HD 191939 b | 0.08 AU | 10 M⊕ | 3.4 R⊕ | 8.9 days | |||||
| HD 191939 c | 0.17 AU | 8 M⊕ | 3.2 R⊕ | 28.6 days | |||||
| HD 191939 d | 0.21 AU | 2.8 M⊕ | 3 R⊕ | 38.4 days | |||||
| HD 191939 e | 0.4 AU | 112.2 M⊕ | 101.5 days | ||||||
| HD 191939 g | 0.81 AU | 15.5 M⊕ | 284 days | ||||||
| HD 191939 f unconfirmed |
4.8 AU | 660 M⊕ | 4450 days | ||||||
Comparison
When comparing to the Solar system planets, HD 191939 f has 2.08 times the mass of Jupiter and it orbits its star a little closer than Jupiter.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 12000 | 809.82 | 660 | 6000 | 2.08 | 6.93 | 45.21 | 38.37 |
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Distance | 12.31 | 6.64 | 4.8 | 3.15 | 0.92 | 0.5 | 0.25 | 0.16 |
Habitability
Habitable zone of the star: 0.87 - 1.2 AU
The planet is too cold to sustain liquid water on its surface. It is however possible that there is environment with higher temperatures on some of its potential moons.
The planet is probably a gas giant and has no surface, however life could still be possible on the potential moons orbiting it.