CONFIRMED EXOPLANET
·
Terrestrial
★ TEMPERATE HABITABLE ZONE
Proxima Cen b
Orbits Host Star: Proxima Cen
(Type M5.5 V)
· Distance: 4.200 Light-Years (1.301 pc)
Planetary Radius
1.020 R⊕
Planetary Mass
1.055 M⊕
Surface Gravity
1.01 g / g⊕
Equilibrium Temp
218K (-55°C)
Orbital Period
11.185 days
Discovery Year
2016 (Radial Velocity)
Habitability Assessment
✓ Classified as a Temperate Habitable Zone Candidate.
With an estimated equilibrium temperature of 218 K (-55°C) and a radius of 1.020 R⊕, Proxima Cen b falls within the conservative empirical boundary where a solid rocky surface could sustain liquid surface water under suitable atmospheric greenhouse conditions.
Discovery Facility: European Southern Observatory.
Other Worlds in the Proxima Cen System (1)
NASA EXOPLANET ARCHIVE COMPOSITE PARAMETERS