CONFIRMED EXOPLANET
·
Sub-Neptune
GJ 581 b
Orbits Host Star: GJ 581
(Type M3.0 V)
· Distance: 20.500 Light-Years (6.298 pc)
Planetary Radius
4.790 R⊕
Planetary Mass
20.500 M⊕
Surface Gravity
0.89 g / g⊕
Equilibrium Temp
464K (+191°C / +376°F)
Orbital Period
5.369 days
Discovery Year
2005 (Radial Velocity)
Habitability Assessment
⚠️ Thermal Exclusions: High equilibrium temperature (464 K · +191°C / +376°F) places this world well interior to the runaway greenhouse threshold.
Discovery Facility: La Silla Observatory.
Other Worlds in the GJ 581 System (2)
NASA EXOPLANET ARCHIVE COMPOSITE PARAMETERS