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Kepler-51 e is a Super-Earth exoplanet (a planet larger than Earth but smaller than Neptune) with a mass of 5.4 Earth masses. The planet completes one orbit around its star every 264.3 Earth days. It was discovered in 2024 using the transit timing variations method. It orbits the star Kepler-51, located approximately 784 parsecs (2557 light-years) from Earth.
2024
Discovered
5.4
Earth Masses
Discovery Information
Discovery MethodTransit Timing Variations
Discovery Year2,024
Discovery FacilityMultiple Observatories
Orbital Properties
Orbital Period264.284 days
Semi-Major Axis0.8166 AU
Eccentricity0.02
Physical Properties
Mass (Jupiter)0.017 MJ
Mass (Earth)5.4 M⊕
Planetary Extremes
Where Kepler-51 e sits on the spectrum of all known exoplanets.
Mass5.4 M⊕
FeatherweightColossus
Year Length264.3 days
LightningGlacial
Star Distance0.817 AU
ScorchedFrozen exile
Star System View
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Orbit Comparison
Earth: 365.25 days (1 AU)Kepler-51 e: 264.3 Earth days (0.817 AU)
Host Star: Kepler-51
Effective Temperature6,018 K
Mass1.04 M☉
Radius0.94 R☉
Size vs Sun1.06x smaller
Distance (pc)783.831 pc
Distance (ly)2556.5 light-years
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