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2016
Discovered
1.1
Earth Masses
218
Temperature (K)
Discovery Information
Discovery MethodRadial Velocity
Discovery Year2,016
Discovery FacilityEuropean Southern Observatory
Orbital Properties
Orbital Period11.1847 days
Semi-Major Axis0.0485 AU
Eccentricity0
Physical Properties
Mass (Jupiter)0.0033 MJ
Mass (Earth)1.055 M⊕
Eq. Temperature218 K
Insolation Flux0.641 S⊕
Planetary Extremes
Where Proxima Cen b sits on the spectrum of all known exoplanets.
Mass1.1 M⊕
FeatherweightColossus
Temperature218 K
FrozenInferno
Year Length11.2 days
LightningGlacial
Star Distance0.048 AU
ScorchedFrozen exile
Orbit Comparison
Earth: 365.25 days (1 AU)Proxima Cen b: 11.2 Earth days (0.048 AU)
Host Star: Proxima Cen
Spectral TypeM5.5 V
Effective Temperature2,900 K
Mass0.1221 M☉
Radius0.141 R☉
Size vs Sun7.09x smaller
Luminosity0.0015 L☉
Luminosity vs Sun662.2x dimmer
Distance (pc)1.3012 pc
Distance (ly)4.2 light-years
Star System View
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Other Planets in the Proxima Cen System
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