CONFIRMED EXOPLANET · Gas Giant

HD 177830 b

Orbits Host Star: HD 177830 (Type K0) · Distance: 204.700 Light-Years (62.767 pc)

Planetary Radius

13.500 R⊕

Planetary Mass

537.133 M⊕

Surface Gravity

2.95 g / g⊕

Equilibrium Temp

400K (+127°C / +261°F)

Orbital Period

410.1 days

Discovery Year

1999 (Radial Velocity)

Habitability Assessment

⚠️ Thermal Exclusions: High equilibrium temperature (400 K · +127°C / +261°F) places this world well interior to the runaway greenhouse threshold.

Discovery Facility: W. M. Keck Observatory.

Other Worlds in the HD 177830 System (1)

HD 177830 c

Gas Giant · 110.9d

NASA EXOPLANET ARCHIVE COMPOSITE PARAMETERS

Inspect Raw NASA Archive Record ↗