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2014
Discovered
4.16
Earth Radii
185
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,014
Discovery FacilityKepler
Orbital Properties
Orbital Period704.1984 days
Semi-Major Axis1.219 AU
Eccentricity0.041
Inclination89.965 deg
Physical Properties
Radius (Jupiter)0.371 RJ
Radius (Earth)4.16 R⊕
Eq. Temperature185 K
Planetary Extremes
Where Kepler-421 b sits on the spectrum of all known exoplanets.
Radius4.16 R⊕
TinyEnormous
Temperature185 K
FrozenInferno
Year Length1.9 yrs
LightningGlacial
Star Distance1.219 AU
ScorchedFrozen exile
Size Comparison
4.16x Earth's radius (0.37x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)Kepler-421 b: 1.9 Earth years (1.219 AU)
Host Star: Kepler-421
Spectral TypeG9/K0
Effective Temperature5,308 K
Mass0.794 M☉
Radius0.757 R☉
Size vs Sun1.32x smaller
Luminosity0.3999 L☉
Luminosity vs Sun2.5x dimmer
Metallicity [Fe/H]-0.25
Distance (pc)348.558 pc
Distance (ly)1136.8 light-years
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