artist rendition
Artist's concept

HAT-P-9 b is a gas giant exoplanet that orbits a F-type star. Its mass is 0.78 Jupiters, it takes 3.9 days to complete one orbit of its star, and is 0.053 AU from its star. Its discovery was announced in 2008.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2008
MASS
0.78 Jupiters
PLANET RADIUS
1.4 x Jupiter
ORBITAL RADIUS
0.053 AU
ORBITAL PERIOD
3.9 days
ECCENTRICITY
0.0
DETECTION METHOD
Transit