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Exoplanet HD 189733 A b
Exoplanet HD 189733 A b orbits star HD 189733 A that lies 64 light years away from the Sun.
It weighs about 361.778 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
64 light years
64 light years
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HD 189733 A b
Exoplanet, gas giant
Star: HD 189733 A
Distance from the star: 0.03099 AU
Orbit around star: 2.219 days
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Orbital period
Orbital period of exoplanet HD 189733 A b around its star is 2.219 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: 361.778 M Earth
| 1.1384 M Jupiter
Exoplanet mass
Exoplanet HD 189733 A b has 361.778 Earth masses (or 1.1384 Jupiter 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
Size: 12.756 R Earth | 1.1 R Jupiter
Density: 961 kg/m3 | 17.43 % Earth
Temperature: 1201 K | 927.85 °C
Year of discovery: 2005 (transit)
Other designations of this exoplanet
V452 Vulpeculae b, BD+22 3887 b, Gaia DR2 1827242816201846144 b, Gliese 4130 b, GJ 4130 b, HIP 98505 b, SAO 88060 b, LTT 15851 b, NLTT 48568 b, Wolf 864 b, TYC 2141-972-1 b, 2MASS J20004370+2242391 b
V452 Vulpeculae b, BD+22 3887 b, Gaia DR2 1827242816201846144 b, Gliese 4130 b, GJ 4130 b, HIP 98505 b, SAO 88060 b, LTT 15851 b, NLTT 48568 b, Wolf 864 b, TYC 2141-972-1 b, 2MASS J20004370+2242391 b
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HD 189733 system structure
Exoplanet HD 189733 A b orbits star HD 189733 A, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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HD 189733 A | ||||||||
| HD 189733 A b | 0.03 AU | 361.8 M⊕ | 12.8 R⊕ | 2.2 days | |||||
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HD 189733 B | 216 AU | |||||||
Comparison
When comparing to the Solar system planets, HD 189733 A b has 1.14 times the mass of Jupiter and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
|
Mass | 6577.78 | 443.9 | 361.78 | 3288.89 | 1.14 | 3.8 | 24.78 | 21.03 |
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Size | 33.31 | 13.43 | 12.76 | 24.07 | 1.14 | 1.4 | 3.19 | 3.36 |
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Density | 0.18 | 0.18 | 0.17 | 0.24 | 0.77 | 1.38 | 0.76 | 0.56 |
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Distance | 0.08 | 0.04 | 0.03 | 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: 0.71 - 1 AU
The planet is too hot to sustain liquid water.
News from this star system
12. 02 2022
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