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Exoplanet KOI-4777 b
Exoplanet KOI-4777 b orbits star KOI-4777 that lies 565 light years away from the Sun.
It weighs about 0.34 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
565 light years
565 light years
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KOI-4777 b
Exoplanet, ultra-short period
Star: KOI-4777
Distance from the star: 0.008 AU
Orbit around star: 0.412 days
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Orbital period
Orbital period of exoplanet KOI-4777 b around its star is 0.412 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: 0.34 M Earth
Exoplanet mass
Exoplanet KOI-4777 b has 0.34 Earth masses, or 0.42 times the mass of Venus.
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: 0.51 R Earth
Density: 14132 kg/m3 | 256.34 % Earth
Temperature: 1180 K | 906.85 °C
Year of discovery: 2017 (transit)
Other designations of this exoplanet
2MASS J19090291+4201563 b, KIC 6592335 b, TIC 158427808 b, Gaia DR2 2102436351673656704 b
2MASS J19090291+4201563 b, KIC 6592335 b, TIC 158427808 b, Gaia DR2 2102436351673656704 b
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KOI-4777 system structure
Exoplanet KOI-4777 b orbits star KOI-4777, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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KOI-4777 | ||||||||
| KOI-4777 b | 0.01 AU | 0.3 M⊕ | 0.5 R⊕ | 0.4 days | |||||
Comparison
When comparing to the Solar system planets, KOI-4777 b has 42 % of mass of Venus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 6.18 | 0.42 | 0.34 | 3.09 | 0 | 0 | 0.02 | 0.02 |
|
Size | 1.33 | 0.54 | 0.51 | 0.96 | 0.05 | 0.06 | 0.13 | 0.13 |
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Density | 2.62 | 2.7 | 2.56 | 3.47 | 11.36 | 20.29 | 11.24 | 8.18 |
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Distance | 0.02 | 0.01 | 0.01 | 0.01 | 0 | 0 | 0 | 0 |
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Temperature | 2.68 | 1.6 | 4.1 | 5.67 | 7.24 | 8.87 | 15.13 | 16.39 |
Habitability
Habitable zone of the star: 0.06 - 0.08 AU
The planet is too hot to sustain liquid water.
The planet has mass comparable to Earth.
News from this star system
11. 12 2021
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