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Exoplanet TOI 139 b
Exoplanet TOI 139 b orbits star TOI 139 that lies 138 light years away from the Sun.
It weighs about 6.6179 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
138 light years
138 light years
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TOI 139 b
Exoplanet, sub-neptune
Star: TOI 139
Orbit around star: 11.07085 days
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Orbital period
Orbital period of exoplanet TOI 139 b around its star is 11.07085 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: 6.6179 M Earth
Exoplanet mass
Exoplanet TOI 139 b has 6.6179 Earth masses, or 0.45 times the mass of Uranus.
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: 2.46 R Earth | 0.2 R Jupiter
Density: 2451 kg/m3 | 44.46 % Earth
Temperature: 561 K | 287.85 °C
Year of discovery: 2023 (transit)
Other designations of this exoplanet
Gaia DR3 6598814657249555328 b
Gaia DR3 6598814657249555328 b
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Comparison
When comparing to the Solar system planets, TOI 139 b has 45 % of mass of Uranus
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 120.33 | 8.12 | 6.62 | 60.16 | 0.02 | 0.07 | 0.45 | 0.38 |
|
Size | 6.42 | 2.59 | 2.46 | 4.64 | 0.22 | 0.27 | 0.62 | 0.65 |
|
Density | 0.45 | 0.47 | 0.44 | 0.6 | 1.97 | 3.52 | 1.95 | 1.42 |
|
Temperature | 1.28 | 0.76 | 1.95 | 2.7 | 3.44 | 4.22 | 7.19 | 7.79 |