CONFIRMED EXOPLANET
·
Gas Giant
HAT-P-21 b
Orbits Host Star: HAT-P-21
(Type G3)
· Distance: 904.400 Light-Years (277.278 pc)
Planetary Radius
12.442 R⊕
Planetary Mass
1547.832 M⊕
Surface Gravity
10 g / g⊕
Equilibrium Temp
1367K (+1094°C / +2001°F)
Orbital Period
4.124 days
Discovery Year
2010 (Transit)
Habitability Assessment
⚠️ Thermal Exclusions: High equilibrium temperature (1367 K · +1094°C / +2001°F) places this world well interior to the runaway greenhouse threshold.
Discovery Facility: HATNet.
NASA EXOPLANET ARCHIVE COMPOSITE PARAMETERS