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Exoplanet HD 149026 b
Exoplanet HD 149026 b orbits star HD 149026 that lies 249 light years away from the Sun.
It weighs about 113.811 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
249 light years
249 light years
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HD 149026 b
Exoplanet
Star: HD 149026
Distance from the star: 0.0436 AU
Orbit around star: 2.875888 days
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Orbital period
Orbital period of exoplanet HD 149026 b around its star is 2.875888 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: 113.811 M Earth
| 0.3581 M Jupiter
Exoplanet mass
Exoplanet HD 149026 b has 113.811 Earth masses (or 0.3581 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
Size: 8.104 R Earth | 0.7 R Jupiter
Density: 1179 kg/m3 | 21.39 % Earth
Temperature: 1694 K | 1420.85 °C
Year of discovery: 2005 (transit)
Other designations of this exoplanet
TOI 2024 b, TOI-2024 b
TOI 2024 b, TOI-2024 b
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HD 149026 system structure
Exoplanet HD 149026 b orbits star HD 149026, which has bigger mass than Sun. It is the only known exoplanet orbiting this star
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HD 149026 | ||||||||
| HD 149026 b | 0.04 AU | 113.8 M⊕ | 8.1 R⊕ | 2.9 days | |||||
Comparison
When comparing to the Solar system planets, HD 149026 b has 1.2 times the mass of Saturn and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 2069.29 | 139.65 | 113.81 | 1034.65 | 0.36 | 1.2 | 7.8 | 6.62 |
|
Size | 21.16 | 8.53 | 8.1 | 15.29 | 0.72 | 0.89 | 2.03 | 2.13 |
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Density | 0.22 | 0.22 | 0.21 | 0.29 | 0.95 | 1.69 | 0.94 | 0.68 |
|
Distance | 0.11 | 0.06 | 0.04 | 0.03 | 0.01 | 0 | 0 | 0 |
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Temperature | 3.85 | 2.3 | 5.88 | 8.14 | 10.39 | 12.74 | 21.72 | 23.53 |
Habitability
Habitable zone of the star: 1.8 - 2.6 AU
The planet orbits too close to its star and is exposed to extreme temperatures and radiation prohibiting life as we know it.