CONFIRMED EXOPLANET
·
Sub-Neptune
GJ 436 b
Orbits Host Star: GJ 436
(Type M2.5 V)
· Distance: 31.800 Light-Years (9.753 pc)
Planetary Radius
4.170 R⊕
Planetary Mass
22.100 M⊕
Surface Gravity
1.27 g / g⊕
Equilibrium Temp
686K (+413°C / +775°F)
Orbital Period
2.644 days
Discovery Year
2004 (Radial Velocity)
Habitability Assessment
⚠️ Thermal Exclusions: High equilibrium temperature (686 K · +413°C / +775°F) places this world well interior to the runaway greenhouse threshold.
Discovery Facility: W. M. Keck Observatory.
NASA EXOPLANET ARCHIVE COMPOSITE PARAMETERS