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Exoplanet WASP 121 b
Exoplanet WASP 121 b orbits star WASP 121 that lies 858 light years away from the Sun.
It weighs about 356.056 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
858 light years
858 light years
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WASP 121 b
Exoplanet, gas giant
Star: WASP 121
Distance from the star: 0.02545 AU
Orbit around star: 1.274925 days
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Orbital period
Orbital period of exoplanet WASP 121 b around its star is 1.274925 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: 0.02Basic characteristic
Mass: 356.056 M Earth
| 1.1204 M Jupiter
Exoplanet mass
Exoplanet WASP 121 b has 356.056 Earth masses (or 1.1204 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: 19.795 R Earth | 1.8 R Jupiter
Density: 253 kg/m3 | 4.59 % Earth
Temperature: 2602 K | 2328.85 °C
Year of discovery: 2015 (transit)
Other designations of this exoplanet
TYC 7630-352-1 b, Gaia 5565050251402363648 b, 2MASS J07102406-3905506 b, 1SWASP J071024.05-390550.5 b, CD-38 3220 b, TIC 22529346 b, TOI-495 b, Gaia EDR3 5565050255701441664 b
TYC 7630-352-1 b, Gaia 5565050251402363648 b, 2MASS J07102406-3905506 b, 1SWASP J071024.05-390550.5 b, CD-38 3220 b, TIC 22529346 b, TOI-495 b, Gaia EDR3 5565050255701441664 b
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WASP 121 system structure
Exoplanet WASP 121 b orbits star WASP 121, which has bigger mass than Sun. It is the only known exoplanet orbiting this star
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WASP 121 | ||||||||
| WASP 121 b | 0.03 AU | 356.1 M⊕ | 19.8 R⊕ | 1.3 days | |||||
Comparison
When comparing to the Solar system planets, WASP 121 b has 1.12 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 | 6473.75 | 436.88 | 356.06 | 3236.87 | 1.12 | 3.74 | 24.39 | 20.7 |
|
Size | 51.7 | 20.84 | 19.8 | 37.35 | 1.77 | 2.18 | 4.95 | 5.21 |
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Density | 0.05 | 0.05 | 0.05 | 0.06 | 0.2 | 0.36 | 0.2 | 0.15 |
|
Distance | 0.07 | 0.04 | 0.03 | 0.02 | 0 | 0 | 0 | 0 |
|
Temperature | 5.91 | 3.53 | 9.03 | 12.51 | 15.96 | 19.56 | 33.36 | 36.14 |
Habitability
Habitable zone of the star: 2 - 2.8 AU
The planet orbits too close to its star and is exposed to extreme temperatures and radiation prohibiting life as we know it.
News from this star system
08. 08 2019
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