HD 209458 b is a gas giant exoplanet that orbits a F-type star. Its mass is 0.73 Jupiters, it takes 3.5 days to complete one orbit of its star, and is 0.04707 AU from its star. Its discovery was announced in 1999.

PLANET TYPE
Gas Giant
DISCOVERY DATE
1999
MASS
0.73 Jupiters
PLANET RADIUS
1.39 x Jupiter
ORBITAL RADIUS
0.04707 AU
ORBITAL PERIOD
3.5 days
ECCENTRICITY
0.0
DETECTION METHOD