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Exoplanet 55 Cancri A e
Exoplanet 55 Cancri A e orbits star 55 Cancri A that lies 41 light years away from the Sun.
It weighs about 8.591 Earth masses and orbits its star much closer than Earth orbits Sun.
Sun distance
41 light years
41 light years
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55 Cancri A e
Exoplanet, lava planet, ultra-short period
Star: 55 Cancri A
Distance from the star: 0.015439 AU
Orbit around star: 0.736547 days
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Orbital period
Orbital period of exoplanet 55 Cancri A e around its star is 0.736547 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: 0.028Basic characteristic
Mass: 8.591 M Earth
Exoplanet mass
Exoplanet 55 Cancri A e has 8.591 Earth masses, or 0.59 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: 1.906 R Earth | 0.2 R Jupiter
Density: 6841 kg/m3 | 124.09 % Earth
Year of discovery: 2004 (transit)
Other designations of this exoplanet
Copernicus e, LHS 2062 e, LDS 6219A e, GJ 324 A e, Gliese 324 e, HD 75732 e, Rho1 Cancri e, 55 Cnc e, BD+28°1660 e, HIC 43587 e, HIP 43587 e, HR 3522 e, SAO 80585 e, rho01 Cnc e, LFT 609 e, LTT 12310 e, NLTT 20414 e, TIC 332064670 e, TOI-1773 e, TYC 1949-2012-1 e, WISEA J085235.41+281948.5 e
Copernicus e, LHS 2062 e, LDS 6219A e, GJ 324 A e, Gliese 324 e, HD 75732 e, Rho1 Cancri e, 55 Cnc e, BD+28°1660 e, HIC 43587 e, HIP 43587 e, HR 3522 e, SAO 80585 e, rho01 Cnc e, LFT 609 e, LTT 12310 e, NLTT 20414 e, TIC 332064670 e, TOI-1773 e, TYC 1949-2012-1 e, WISEA J085235.41+281948.5 e
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55 Cancri system structure
Exoplanet 55 Cancri A e orbits star 55 Cancri A, which has bigger mass than Sun. It is one of 5 known exoplanets orbiting this star.
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55 Cancri A | ||||||||
| 55 Cancri A e | 0.02 AU | 8.6 M⊕ | 1.9 R⊕ | 0.7 days | |||||
| 55 Cancri A b | 0.11 AU | 262.3 M⊕ | 14.7 days | ||||||
| 55 Cancri A c | 0.24 AU | 54.3 M⊕ | 44.4 days | ||||||
| 55 Cancri A f | 0.78 AU | 49.3 M⊕ | 260 days | ||||||
| 55 Cancri A d | 5.45 AU | 1227.1 M⊕ | 4867 days | ||||||
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55 Cancri B | ||||||||
| 55 Cancri B b | 0.04 AU | 3.5 M⊕ | 6.8 days | ||||||
| 55 Cancri B c | 0.13 AU | 5.3 M⊕ | 33.7 days | ||||||
Comparison
When comparing to the Solar system planets, 55 Cancri A e has 59 % of mass of Uranus and it orbits its star closer than Mercury orbits the Sun.
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 156.2 | 10.54 | 8.59 | 78.1 | 0.03 | 0.09 | 0.59 | 0.5 |
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Size | 4.98 | 2.01 | 1.91 | 3.6 | 0.17 | 0.21 | 0.48 | 0.5 |
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Density | 1.27 | 1.31 | 1.24 | 1.68 | 5.5 | 9.82 | 5.44 | 3.96 |
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Distance | 0.04 | 0.02 | 0.02 | 0.01 | 0 | 0 | 0 | 0 |
Habitability
Habitable zone of the star: 0.99 - 1.4 AU
The planet is too hot to sustain liquid water.
News from this star system
11. 12 2022
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