CONFIRMED EXOPLANET
·
Gas Giant
HD 99109 b
Orbits Host Star: HD 99109
(Type G8/K0 IV)
· Distance: 178.700 Light-Years (54.790 pc)
Planetary Radius
14.300 R⊕
Planetary Mass
139.845 M⊕
Surface Gravity
0.68 g / g⊕
Equilibrium Temp
239K (-34°C / -29°F)
Orbital Period
439.3 days
Discovery Year
2005 (Radial Velocity)
Habitability Assessment
☁️ Gaseous Envelope: With a radius exceeding 2.2 Earth radii, this world is modeled as a volatile-rich sub-Neptune or Jovian gas giant without a defined solid surface boundary.
Discovery Facility: W. M. Keck Observatory.
NASA EXOPLANET ARCHIVE COMPOSITE PARAMETERS