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Exoplanet WASP 18 b
Exoplanet WASP 18 b orbits star WASP 18 that lies 400 light years away from the Sun.
It weighs about 3274.442 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
400 light years
400 light years
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WASP 18 b
Exoplanet, gas giant, ultra-short period
Star: WASP 18
Distance from the star: 0.020206 AU
Orbit around star: 0.941454 days
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Orbital period
Orbital period of exoplanet WASP 18 b around its star is 0.941454 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: 0.0092Basic characteristic
Mass: 3274.442 M Earth
| 10.3035 M Jupiter
Exoplanet mass
Exoplanet WASP 18 b has 3274.442 Earth masses (or 10.3035 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: 12.397 R Earth | 1.1 R Jupiter
Density: 9476 kg/m3 | 171.88 % Earth
Year of discovery: 2009 (transit)
Other designations of this exoplanet
HD 10069 b, HIP 7562 b, PPM 306061 b, SAO 215585 b, 2MASS J15595095-2803422 b, Gaia DR2 4955371367334610048 b, TOI 185 b
HD 10069 b, HIP 7562 b, PPM 306061 b, SAO 215585 b, 2MASS J15595095-2803422 b, Gaia DR2 4955371367334610048 b, TOI 185 b
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Comparison
When comparing to the Solar system planets, WASP 18 b has 10.3 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 | 59535.31 | 4017.72 | 3274.44 | 29767.65 | 10.3 | 34.4 | 224.28 | 190.37 |
|
Size | 32.38 | 13.05 | 12.4 | 23.39 | 1.11 | 1.36 | 3.1 | 3.26 |
|
Density | 1.75 | 1.81 | 1.72 | 2.33 | 7.62 | 13.61 | 7.53 | 5.48 |
|
Distance | 0.05 | 0.03 | 0.02 | 0.01 | 0 | 0 | 0 | 0 |
Habitability
Habitable zone of the star: 1.5 - 2.2 AU
The planet is too hot to sustain liquid water.