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Exoplanet Luytens Star b
Exoplanet Luytens Star b orbits star Luytens Star that lies 12 light years away from the Sun.
It weighs about 2.2 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
12 light years
12 light years
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Luytens Star b
Exoplanet, super-earth
Star: Luytens Star
Distance from the star: 0.090 AU
Orbit around star: 18.65 days
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Orbital period
Orbital period of exoplanet Luytens Star b around its star is 18.65 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: 0.10Basic characteristic
Mass: 2.2 M Earth
Exoplanet mass
Exoplanet Luytens Star b has 2.2 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: 1.4 R Earth | 0.1 R Jupiter
Density: 4420 kg/m3 | 80.17 % Earth
Temperature: 259 K | -14.15 °C
Year of discovery: 2017 (radial velocity)
Other designations of this exoplanet
Gliese 273 b, GJ 273 b, GCTP1755 b, BD +05°1668 b, G 089-019 b, LHS 33 b, LTT 12021 b, LFT 527 b, Vys 17 b, HIC 36208 b, HIP 36208 b
Gliese 273 b, GJ 273 b, GCTP1755 b, BD +05°1668 b, G 089-019 b, LHS 33 b, LTT 12021 b, LFT 527 b, Vys 17 b, HIC 36208 b, HIP 36208 b
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Luytens Star system structure
Exoplanet Luytens Star b orbits star Luytens Star, which has lower mass than Sun. It is one of 4 known exoplanets orbiting this star.
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|
Luytens Star | ||||||||
| Luytens Star c | 0.04 AU | 1.2 M⊕ | 4.7 days | ||||||
| Luytens Star b | 0.09 AU (HZ) | 2.2 M⊕ | 1.4 R⊕ | 18.7 days | |||||
| Luytens Star d | 0.71 AU | 10.8 M⊕ | 413.9 days | ||||||
| Luytens Star e | 0.85 AU | 9.3 M⊕ | 542 days | ||||||
Comparison
When comparing to the Solar system planets, Luytens Star 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 | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 40 | 2.7 | 2.2 | 20 | 0.01 | 0.02 | 0.15 | 0.13 |
|
Size | 3.66 | 1.47 | 1.4 | 2.64 | 0.12 | 0.15 | 0.35 | 0.37 |
|
Density | 0.82 | 0.84 | 0.8 | 1.09 | 3.55 | 6.35 | 3.51 | 2.56 |
|
Distance | 0.23 | 0.12 | 0.09 | 0.06 | 0.02 | 0.01 | 0 | 0 |
|
Temperature | 0.59 | 0.35 | 0.9 | 1.25 | 1.59 | 1.95 | 3.32 | 3.6 |
Habitability
Habitable zone of the star: 0.09 - 0.12 AU
The planet is orbiting inside the habitable zone of its star.
The planet has mass comparable to Earth.