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Exoplanet HD 207897 b
Exoplanet HD 207897 b orbits star HD 207897 that lies 92 light years away from the Sun.
It weighs about 15.895 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
92 light years
92 light years
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HD 207897 b
Exoplanet, super-earth
Star: HD 207897
Distance from the star: 0.1173 AU
Orbit around star: 16.20170 days
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Orbital period
Orbital period of exoplanet HD 207897 b around its star is 16.20170 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: 15.895 M Earth
Exoplanet mass
Exoplanet HD 207897 b has 15.895 Earth masses, or 0.92 times the mass of Neptune.
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: 2.34 R Earth | 0.2 R Jupiter
Density: 6840 kg/m3 | 124.07 % Earth
Temperature: 632.3 K | 359.15 °C
Year of discovery: 2021 (transit)
Other designations of this exoplanet
G 261-47 b, G 265-42 b, HIC 107038 b, HIP 107038 b, LSPM J2140+8420 b, LTT 16367 b, NLTT 52064 b, 2MASS J21404490+8420005 b, TIC 264678534 b, TOI-1611 b, TYC 4649-124-1 b, WISEA J214047.16+842001.1 b, Gaia DR2 2300641567596591488 b
G 261-47 b, G 265-42 b, HIC 107038 b, HIP 107038 b, LSPM J2140+8420 b, LTT 16367 b, NLTT 52064 b, 2MASS J21404490+8420005 b, TIC 264678534 b, TOI-1611 b, TYC 4649-124-1 b, WISEA J214047.16+842001.1 b, Gaia DR2 2300641567596591488 b
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HD 207897 system structure
Exoplanet HD 207897 b orbits star HD 207897, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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HD 207897 | ||||||||
| HD 207897 b | 0.12 AU | 15.9 M⊕ | 2.3 R⊕ | 16.2 days | |||||
Comparison
When comparing to the Solar system planets, HD 207897 b has 92 % of mass of Neptune and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 289 | 19.5 | 15.9 | 144.5 | 0.05 | 0.17 | 1.09 | 0.92 |
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Size | 6.11 | 2.46 | 2.34 | 4.42 | 0.21 | 0.26 | 0.59 | 0.62 |
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Density | 1.27 | 1.31 | 1.24 | 1.68 | 5.5 | 9.82 | 5.44 | 3.96 |
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Distance | 0.3 | 0.16 | 0.12 | 0.08 | 0.02 | 0.01 | 0.01 | 0 |
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Temperature | 1.44 | 0.86 | 2.2 | 3.04 | 3.88 | 4.75 | 8.11 | 8.78 |
Habitability
Habitable zone of the star: 0.73 - 1 AU
The planet is too hot to sustain liquid water.