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Exoplanet TOI 561 b
Exoplanet TOI 561 b orbits star TOI 561 that lies 276 light years away from the Sun.
It weighs about 2.241 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
276 light years
276 light years
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TOI 561 b
Exoplanet, lava planet, ultra-short period
Star: TOI 561
Distance from the star: 0.0106 AU
Orbit around star: 0.446568 days
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Orbital period
Orbital period of exoplanet TOI 561 b around its star is 0.446568 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: 2.241 M Earth
Exoplanet mass
Exoplanet TOI 561 b has 2.241 Earth masses, or 0.15 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: 1.37 R Earth | 0.1 R Jupiter
Density: 4805 kg/m3 | 87.16 % Earth
Year of discovery: 2020 (transit)
Other designations of this exoplanet
TIC 377064495 b, 2MASS J09524454+0612589 b, TYC 243-1528-1 b, WISE J095244.47+061258.2 b, UCAC4 482-047857 b, GSC 00243-01528 b
TIC 377064495 b, 2MASS J09524454+0612589 b, TYC 243-1528-1 b, WISE J095244.47+061258.2 b, UCAC4 482-047857 b, GSC 00243-01528 b
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TOI 561 system structure
Exoplanet TOI 561 b orbits star TOI 561, which has lower mass than Sun. It is one of 4 known exoplanets orbiting this star.
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TOI 561 | ||||||||
| TOI 561 b | 0.01 AU | 2.2 M⊕ | 1.4 R⊕ | 0.4 days | |||||
| TOI 561 c | 0.09 AU | 6.6 M⊕ | 2.9 R⊕ | 10.8 days | |||||
| TOI 561 d | 0.16 AU | 12.2 M⊕ | 2.8 R⊕ | 25.7 days | |||||
| TOI 561 e | 0.33 AU | 13.6 M⊕ | 2.6 R⊕ | 77 days | |||||
Comparison
When comparing to the Solar system planets, TOI 561 b has 15 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 40.75 | 2.75 | 2.24 | 20.37 | 0.01 | 0.02 | 0.15 | 0.13 |
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Size | 3.58 | 1.44 | 1.37 | 2.58 | 0.12 | 0.15 | 0.34 | 0.36 |
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Density | 0.89 | 0.92 | 0.87 | 1.18 | 3.86 | 6.9 | 3.82 | 2.78 |
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Distance | 0.03 | 0.01 | 0.01 | 0.01 | 0 | 0 | 0 | 0 |
Habitability
Habitable zone of the star: 0.63 - 0.91 AU
The planet is too hot to sustain liquid water.
The planet has mass comparable to Earth.