stars
exoplanets
news
Exoplanet K2-137 b
Exoplanet K2-137 b orbits star K2-137 that lies 323 light years away from the Sun.
It weighs about 1.5 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
323 light years
323 light years
Loading may take a moment.
K2-137 b
Exoplanet, gas giant, ultra-short period
Star: K2-137
Distance from the star: 0.0058 AU
Orbit around star: 0.179715 days
+
Orbital period
Orbital period of exoplanet K2-137 b around its star is 0.179715 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: 1.5 M Earth
Exoplanet mass
Exoplanet K2-137 b has 1.5 Earth 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: 0.89 R Earth | 0.1 R Jupiter
Density: 11731 kg/m3 | 212.79 % Earth
Temperature: 1471 K | 1197.85 °C
Year of discovery: 2017 (transit)
Other designations of this exoplanet
EPIC 228813918 b, 2MASS J12272899-0611428 b, TIC 98720702 b, Gaia DR2 3583729340372873344 b, UCAC 420-056244 b
EPIC 228813918 b, 2MASS J12272899-0611428 b, TIC 98720702 b, Gaia DR2 3583729340372873344 b, UCAC 420-056244 b
Advertisement
Comparison
When comparing to the Solar system planets, K2-137 b has 1.5 times the mass of Earth and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 27.27 | 1.84 | 1.5 | 13.64 | 0 | 0.02 | 0.1 | 0.09 |
|
Size | 2.32 | 0.94 | 0.89 | 1.68 | 0.08 | 0.1 | 0.22 | 0.23 |
|
Density | 2.17 | 2.24 | 2.13 | 2.88 | 9.43 | 16.84 | 9.33 | 6.79 |
|
Distance | 0.01 | 0.01 | 0.01 | 0 | 0 | 0 | 0 | 0 |
|
Temperature | 3.34 | 2 | 5.11 | 7.07 | 9.02 | 11.06 | 18.86 | 20.43 |
Habitability
Habitable zone of the star: 0.17 - 0.24 AU
The planet orbits too close to its star and is exposed to extreme temperatures and radiation prohibiting life as we know it.
The planet has mass comparable to Earth.