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Exoplanet HD 28109 d
Exoplanet HD 28109 d orbits star HD 28109 that lies 459 light years away from the Sun.
It weighs about 5.786 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
459 light years
459 light years
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HD 28109 d
Exoplanet, sub-neptune
Star: HD 28109
Distance from the star: 0.411 AU
Orbit around star: 84.2899 days
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Orbital period
Orbital period of exoplanet HD 28109 d around its star is 84.2899 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
Basic characteristic
Mass: 5.786 M Earth
Exoplanet mass
Exoplanet HD 28109 d has 5.786 Earth masses, or 0.4 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: 3.11 R Earth | 0.3 R Jupiter
Density: 1061 kg/m3 | 19.25 % Earth
Temperature: 506 K | 232.85 °C
Year of discovery: 2022 (transit)
Other designations of this exoplanet
TIC 29781292 d, TOI-282 d, 2MASS J04205712-6806095 d, UCAC4 110-003794 d, WISE J042057.17-680609.5 d, Gaia DR2 4668163021600295552 d, HIP 20295 d, TYC 9154-01248-1 d
TIC 29781292 d, TOI-282 d, 2MASS J04205712-6806095 d, UCAC4 110-003794 d, WISE J042057.17-680609.5 d, Gaia DR2 4668163021600295552 d, HIP 20295 d, TYC 9154-01248-1 d
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HD 28109 system structure
Exoplanet HD 28109 d orbits star HD 28109, which has bigger mass than Sun. It is one of 3 known exoplanets orbiting this star.
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HD 28109 | ||||||||
| HD 28109 b | 0.14 AU | 6.2 M⊕ | 2.7 R⊕ | 22.9 days | |||||
| HD 28109 c | 0.31 AU | 9.2 M⊕ | 4.1 R⊕ | 56 days | |||||
| HD 28109 d | 0.41 AU | 5.8 M⊕ | 3.1 R⊕ | 84.3 days | |||||
Comparison
When comparing to the Solar system planets, HD 28109 d has 40 % of mass of Uranus and it orbits its star between distances of Mercury and Venus from the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 105.2 | 7.1 | 5.79 | 52.6 | 0.02 | 0.06 | 0.4 | 0.34 |
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Size | 8.12 | 3.27 | 3.11 | 5.87 | 0.28 | 0.34 | 0.78 | 0.82 |
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Density | 0.2 | 0.2 | 0.19 | 0.26 | 0.85 | 1.52 | 0.84 | 0.61 |
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Distance | 1.05 | 0.57 | 0.41 | 0.27 | 0.08 | 0.04 | 0.02 | 0.01 |
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Temperature | 1.15 | 0.69 | 1.76 | 2.43 | 3.1 | 3.8 | 6.49 | 7.03 |
Habitability
Habitable zone of the star: 1.7 - 2.4 AU
The planet is too hot to sustain liquid water.
The planet is bigger than Earth and smaller than Neptune. Its average density 1061 kg/m3 points to a hot gas planet.
News from this star system
23. 05 2022
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