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Exoplanet K2-157 b
Exoplanet K2-157 b orbits star K2-157 that lies 946 light years away from the Sun.
It weighs about 362.414 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
946 light years
946 light years
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K2-157 b
Exoplanet, gas giant, ultra-short period
Star: K2-157
Distance from the star: 0.00962 AU
Orbit around star: 0.365257 days
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Orbital period
Orbital period of exoplanet K2-157 b around its star is 0.365257 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: 362.414 M Earth
| 1.1404 M Jupiter
Exoplanet mass
Exoplanet K2-157 b has 362.414 Earth masses (or 1.1404 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: 11.825 R Earth | 1.1 R Jupiter
Density: 1208 kg/m3 | 21.91 % Earth
Temperature: 2432 K | 2158.85 °C
Year of discovery: 2018 (transit)
Other designations of this exoplanet
EPIC 201130233 b, TIC 349445372 b, UCAC4 422-055378 b, Gaia DR3 3596333042162818304 b
EPIC 201130233 b, TIC 349445372 b, UCAC4 422-055378 b, Gaia DR3 3596333042162818304 b
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Comparison
When comparing to the Solar system planets, K2-157 b has 1.14 times the mass of Jupiter and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 6589.35 | 444.68 | 362.41 | 3294.67 | 1.14 | 3.81 | 24.82 | 21.07 |
|
Size | 30.88 | 12.45 | 11.83 | 22.31 | 1.05 | 1.3 | 2.96 | 3.11 |
|
Density | 0.22 | 0.23 | 0.22 | 0.3 | 0.97 | 1.73 | 0.96 | 0.7 |
|
Distance | 0.02 | 0.01 | 0.01 | 0.01 | 0 | 0 | 0 | 0 |
|
Temperature | 5.53 | 3.3 | 8.44 | 11.69 | 14.92 | 18.29 | 31.18 | 33.78 |
Habitability
Habitable zone of the star: 0.81 - 1.2 AU
The planet orbits too close to its star and is exposed to extreme temperatures and radiation prohibiting life as we know it.