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Exoplanet HD 191785 b
Exoplanet HD 191785 b orbits star HD 191785 that lies 67 light years away from the Sun.
It weighs about 2.12 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
67 light years
67 light years
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HD 191785 b
Exoplanet
Star: HD 191785
Distance from the star: 0.03608 AU
Orbit around star: 2.76369 days
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Orbital period
Orbital period of exoplanet HD 191785 b around its star is 2.76369 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: 2.12 M Earth
Exoplanet mass
Exoplanet HD 191785 b has 2.12 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
Temperature: 1201 K | 927.85 °C
Other designations of this exoplanet
TIC 87216634 b, TOI 5789 b, LHS 3529 b, BD+15 4074 b, G 143-34 b, GJ 783.2 A b, Gliese 783.2 A b, HIP 99452 b, 2MASS J20110609+1611162 b, TYC 1618-827-1 b, WISEA J201105.78+161121.0 b, Wolf 873 b, LFT 1531 b, TOI-5789 b, b
TIC 87216634 b, TOI 5789 b, LHS 3529 b, BD+15 4074 b, G 143-34 b, GJ 783.2 A b, Gliese 783.2 A b, HIP 99452 b, 2MASS J20110609+1611162 b, TYC 1618-827-1 b, WISEA J201105.78+161121.0 b, Wolf 873 b, LFT 1531 b, TOI-5789 b, b
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HD 191785 system structure
Exoplanet HD 191785 b orbits star HD 191785, which has lower mass than Sun. It is one of 4 known exoplanets orbiting this star.
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HD 191785 | ||||||||
| HD 191785 b | 0.04 AU | 2.1 M⊕ | 2.8 days | ||||||
| HD 191785 c | 0.1 AU | 5 M⊕ | 2.9 R⊕ | 12.9 days | |||||
| HD 191785 d | 0.18 AU | 4.3 M⊕ | 29.7 days | ||||||
| HD 191785 e | 0.29 AU | 11.6 M⊕ | 63 days | ||||||
Comparison
When comparing to the Solar system planets, HD 191785 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 | 38.55 | 2.6 | 2.12 | 19.27 | 0.01 | 0.02 | 0.15 | 0.12 |
|
Distance | 0.09 | 0.05 | 0.04 | 0.02 | 0.01 | 0 | 0 | 0 |
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Temperature | 2.73 | 1.63 | 4.17 | 5.77 | 7.37 | 9.03 | 15.4 | 16.68 |
Habitability
Habitable zone of the star: 0.85 - 1.2 AU
The planet is too hot to sustain liquid water.
The planet has mass comparable to Earth.