stars
exoplanets
news
Exoplanet K2-139 b
Exoplanet K2-139 b orbits star K2-139 that lies 499 light years away from the Sun.
It weighs about 108.088 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
499 light years
499 light years
Loading may take a moment.
K2-139 b
Exoplanet
Star: K2-139
Distance from the star: 0.176 AU
Orbit around star: 28.38267 days
+
Orbital period
Orbital period of exoplanet K2-139 b around its star is 28.38267 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: 108.088 M Earth
| 0.3401 M Jupiter
Exoplanet mass
Exoplanet K2-139 b has 108.088 Earth masses (or 0.3401 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: 9.191 R Earth | 0.8 R Jupiter
Density: 768 kg/m3 | 13.93 % Earth
Year of discovery: 2024 (transit)Advertisement
Comparison
When comparing to the Solar system planets, K2-139 b has 1.14 times the mass of Saturn and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 1965.24 | 132.62 | 108.09 | 982.62 | 0.34 | 1.14 | 7.4 | 6.28 |
|
Size | 24 | 9.67 | 9.19 | 17.34 | 0.82 | 1.01 | 2.3 | 2.42 |
|
Density | 0.14 | 0.15 | 0.14 | 0.19 | 0.62 | 1.1 | 0.61 | 0.44 |
|
Distance | 0.45 | 0.24 | 0.18 | 0.12 | 0.03 | 0.02 | 0.01 | 0.01 |
Habitability
Habitable zone of the star: 128.3 - 184.8 AU
The planet is too hot to sustain liquid water.