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Exoplanet HD 28471 e
(Unconfirmed Exoplanet)
HD 28471 e is an unconfirmed exoplanet detected around star HD 28471. More observations are needed to confirm its existence.
Sun distance
143 light years
143 light years
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HD 28471 e
Exoplanet
Star: HD 28471
Distance from the star: 2.54 AU
Orbit around star: 1495.57 days
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Orbital period
Orbital period of exoplanet HD 28471 e around its star is 1495.57 days (or 4.1 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
Eccentricity: 0.005Basic characteristic
Mass: 118.261 M Earth
| 0.3721 M Jupiter
Exoplanet mass
Exoplanet HD 28471 e has 118.261 Earth masses (or 0.3721 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: 2025 (radial velocity)Advertisement
HD 28471 system structure
Exoplanet HD 28471 e orbits star HD 28471, which has lower mass than Sun. It is one of 4 known exoplanets orbiting this star.
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HD 28471 | ||||||||
| HD 28471 b | 0.04 AU | 3.7 M⊕ | 3.2 days | ||||||
| HD 28471 c | 0.07 AU | 5.7 M⊕ | 6.1 days | ||||||
| HD 28471 d | 0.1 AU | 4.9 M⊕ | 11.7 days | ||||||
| HD 28471 e unconfirmed |
2.54 AU | 118.3 M⊕ | 1495.6 days | ||||||
Comparison
When comparing to the Solar system planets, HD 28471 e has 1.24 times the mass of Saturn and it orbits its star a little closer than Jupiter.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 2150.2 | 145.11 | 118.26 | 1075.1 | 0.37 | 1.24 | 8.1 | 6.88 |
|
Distance | 6.51 | 3.51 | 2.54 | 1.67 | 0.49 | 0.27 | 0.13 | 0.08 |
Habitability
Habitable zone of the star: 1.2 - 1.7 AU
The planet seems to be close to the outer edge of the habitable zone. It is probably very cold, but environment with higher temperatures might be possible.
The planet is probably a gas giant and has no surface, however life could still be possible on the potential moons orbiting it.