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Exoplanet Gliese 1289 b
Exoplanet Gliese 1289 b orbits star Gliese 1289 that lies 27 light years away from the Sun.
It weighs about 6.272 Earth masses and orbits its star closer than Earth orbits Sun.
Sun distance
27 light years
27 light years
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Gliese 1289 b
Exoplanet
Star: Gliese 1289
Distance from the star: 0.27 AU
Orbit around star: 111.74 days
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Orbital period
Orbital period of exoplanet Gliese 1289 b around its star is 111.74 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: 6.272 M Earth
Exoplanet mass
Exoplanet Gliese 1289 b has 6.272 Earth masses, or 0.43 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
Temperature: 150 K | -123.15 °C
Year of discovery: 2024 (radial velocity)
Other designations of this exoplanet
G 130-4 b, LHS 4003 b, 2MASS J23430628+3632132 b, NLTT 57748 b, G 190-43 b, GJ 1289 b, TIC 352593978 b, WISEA J234307.14+363211.5 b
G 130-4 b, LHS 4003 b, 2MASS J23430628+3632132 b, NLTT 57748 b, G 190-43 b, GJ 1289 b, TIC 352593978 b, WISEA J234307.14+363211.5 b
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Gliese 1289 system structure
Exoplanet Gliese 1289 b orbits star Gliese 1289, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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Gliese 1289 | ||||||||
| Gliese 1289 b | 0.27 AU | 6.3 M⊕ | 111.7 days | ||||||
Comparison
When comparing to the Solar system planets, Gliese 1289 b has 43 % 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 | 114.04 | 7.7 | 6.27 | 57.02 | 0.02 | 0.07 | 0.43 | 0.36 |
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Distance | 0.69 | 0.37 | 0.27 | 0.18 | 0.05 | 0.03 | 0.01 | 0.01 |
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Temperature | 0.34 | 0.2 | 0.52 | 0.72 | 0.92 | 1.13 | 1.92 | 2.08 |
Habitability
Habitable zone of the star: 0.05 - 0.07 AU
The planet is too cold to sustain liquid water on its surface. It is however possible that there is environment with higher temperatures on some of its potential moons.