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Exoplanet HD 97658 b
Exoplanet HD 97658 b orbits star HD 97658 that lies 70 light years away from the Sun.
It weighs about 8.3 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
70 light years
70 light years
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HD 97658 b
Exoplanet, super-earth
Star: HD 97658
Distance from the star: 0.08 AU
Orbit around star: 9.4897 days
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Orbital period
Orbital period of exoplanet HD 97658 b around its star is 9.4897 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: 0.03Basic characteristic
Mass: 8.3 M Earth
Exoplanet mass
Exoplanet HD 97658 b has 8.3 Earth masses, or 0.57 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: 2.12 R Earth | 0.2 R Jupiter
Density: 4803 kg/m3 | 87.12 % Earth
Temperature: 681 K | 407.85 °C
Year of discovery: 2010 (transit)Advertisement
HD 97658 system structure
Exoplanet HD 97658 b orbits star HD 97658, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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HD 97658 | ||||||||
| HD 97658 b | 0.08 AU | 8.3 M⊕ | 2.1 R⊕ | 9.5 days | |||||
Comparison
When comparing to the Solar system planets, HD 97658 b has 57 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 150.91 | 10.18 | 8.3 | 75.45 | 0.03 | 0.09 | 0.57 | 0.48 |
|
Size | 5.54 | 2.23 | 2.12 | 4 | 0.19 | 0.23 | 0.53 | 0.56 |
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Density | 0.89 | 0.92 | 0.87 | 1.18 | 3.86 | 6.9 | 3.82 | 2.78 |
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Distance | 0.21 | 0.11 | 0.08 | 0.05 | 0.02 | 0.01 | 0 | 0 |
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Temperature | 1.55 | 0.92 | 2.36 | 3.27 | 4.18 | 5.12 | 8.73 | 9.46 |
Habitability
Habitable zone of the star: 0.73 - 1.1 AU
The planet is too hot to sustain liquid water.