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Exoplanet Tau Ceti g
Exoplanet Tau Ceti g orbits star Tau Ceti that lies 12 light years away from the Sun.
It weighs about 1.75 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
12 light years
12 light years
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Tau Ceti g
Exoplanet
Star: Tau Ceti
Distance from the star: 0.133 AU
Orbit around star: 20 days
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Orbital period
Orbital period of exoplanet Tau Ceti g around its star is 20 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
Eccentricity: 0.06Basic characteristic
Mass: 1.75 M Earth
Exoplanet mass
Exoplanet Tau Ceti g has 1.75 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
Year of discovery: 2017 (radial velocity)
Other designations of this exoplanet
Gliese 71 g, GJ 71 g, 52 Cet g, BD−16° 295 g, FK5 59 g, HD 10700 g, HIP 8102 g, HIC 8102 g, HR 509 g, SAO 147986 g, LFT 159 g, LHS 146 g, LTT 935 g, * tau Cet g, τ Ceti g
Gliese 71 g, GJ 71 g, 52 Cet g, BD−16° 295 g, FK5 59 g, HD 10700 g, HIP 8102 g, HIC 8102 g, HR 509 g, SAO 147986 g, LFT 159 g, LHS 146 g, LTT 935 g, * tau Cet g, τ Ceti g
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Tau Ceti system structure
Exoplanet Tau Ceti g orbits star Tau Ceti, which has lower mass than Sun. It is one of 6 known exoplanets orbiting this star.
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Tau Ceti | ||||||||
| Tau Ceti b unconfirmed |
0.11 AU | 2 M⊕ | 14 days | ||||||
| Tau Ceti g | 0.13 AU | 1.8 M⊕ | 20 days | ||||||
| Tau Ceti c unconfirmed |
0.2 AU | 0 M⊕ | 35.4 days | ||||||
| Tau Ceti h | 0.24 AU | 1.8 M⊕ | 49.4 days | ||||||
| Tau Ceti e | 0.54 AU | 3.9 M⊕ | 162.8 days | ||||||
| Tau Ceti f | 1.33 AU | 3.9 M⊕ | 636.1 days | ||||||
| Tau Ceti asteroid belt | 10 AU | - | |||||||
Comparison
When comparing to the Solar system planets, Tau Ceti g has 1.75 times the mass of Earth and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 31.82 | 2.15 | 1.75 | 15.91 | 0.01 | 0.02 | 0.12 | 0.1 |
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Distance | 0.34 | 0.18 | 0.13 | 0.09 | 0.03 | 0.01 | 0.01 | 0 |
Habitability
Habitable zone of the star: 0.74 - 1.1 AU
The planet is too hot to sustain liquid water.
The planet has mass comparable to Earth.