CONFIRMED EXOPLANET
·
Gas Giant
HD 40307 d
Orbits Host Star: HD 40307
(Type K2.5 V)
· Distance: 42.200 Light-Years (12.936 pc)
Planetary Radius
—
Planetary Mass
1775.389 M⊕
Surface Gravity
—
Equilibrium Temp
541K (+268°C / +514°F)
Orbital Period
20.432 days
Discovery Year
2009 (Radial Velocity)
Habitability Assessment
⚠️ Thermal Exclusions: High equilibrium temperature (541 K · +268°C / +514°F) places this world well interior to the runaway greenhouse threshold.
Discovery Facility: La Silla Observatory.
Other Worlds in the HD 40307 System (4)
NASA EXOPLANET ARCHIVE COMPOSITE PARAMETERS