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Kepler-687 b is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 3.5 times the radius of Earth. The planet completes one orbit around its star every 20.5 Earth days. It was discovered in 2016 using the transit method. It orbits the star Kepler-687, located approximately 634 parsecs (2067 light-years) from Earth.
2016
Discovered
3.52
Earth Radii
Discovery Information
Discovery MethodTransit
Discovery Year2,016
Discovery FacilityKepler
Orbital Properties
Orbital Period20.5059 days
Semi-Major Axis0.1344 AU
Physical Properties
Radius (Jupiter)0.314 RJ
Radius (Earth)3.52 R⊕
Planetary Extremes
Where Kepler-687 b sits on the spectrum of all known exoplanets.
Radius3.52 R⊕
TinyEnormous
Year Length20.5 days
LightningGlacial
Star Distance0.134 AU
ScorchedFrozen exile
Star System View
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Size Comparison
3.52x Earth's radius (0.31x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)Kepler-687 b: 20.5 Earth days (0.134 AU)
Host Star: Kepler-687
Effective Temperature4,841 K
Mass0.77 M☉
Radius0.73 R☉
Size vs Sun1.37x smaller
Metallicity [Fe/H]-0.04
Distance (pc)633.66 pc
Distance (ly)2066.7 light-years
Planets in the Kepler-687 System
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