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Exoplanet TOI 277 b
Exoplanet TOI 277 b orbits star TOI 277 that lies 212 light years away from the Sun.
It weighs about 9.8 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
212 light years
212 light years
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TOI 277 b
Exoplanet, sub-neptune
Star: TOI 277
Distance from the star: 0.033 AU
Orbit around star: 3.994 days
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Orbital period
Orbital period of exoplanet TOI 277 b around its star is 3.994 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: 9.8 M Earth
Exoplanet mass
Exoplanet TOI 277 b has 9.8 Earth masses, or 0.67 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: 3.0949 R Earth | 0.3 R Jupiter
Density: 1823 kg/m3 | 33.07 % Earth
Temperature: 739.9 K | 466.75 °C
Year of discovery: 2019 (transit)
Other designations of this exoplanet
Gaia DR3 2353440974955205632 b, TIC 439456714 b
Gaia DR3 2353440974955205632 b, TIC 439456714 b
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Comparison
When comparing to the Solar system planets, TOI 277 b has 67 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 178.18 | 12.02 | 9.8 | 89.09 | 0.03 | 0.1 | 0.67 | 0.57 |
|
Size | 8.08 | 3.26 | 3.09 | 5.84 | 0.28 | 0.34 | 0.77 | 0.81 |
|
Density | 0.34 | 0.35 | 0.33 | 0.45 | 1.47 | 2.62 | 1.45 | 1.05 |
|
Distance | 0.08 | 0.05 | 0.03 | 0.02 | 0.01 | 0 | 0 | 0 |
|
Temperature | 1.68 | 1 | 2.57 | 3.56 | 4.54 | 5.56 | 9.49 | 10.28 |
Habitability
Habitable zone of the star: 0.1 - 0.15 AU
The planet is too hot to sustain liquid water.
The planet is bigger than Earth and smaller than Neptune. Its average density 1823 kg/m3 points to a hot gas planet.