51 Pegasi b is a gas giant exoplanet that orbits a G-type star. Its mass is 0.46 Jupiters, it takes 4.2 days to complete one orbit of its star, and is 0.0527 AU from its star. Its discovery was announced in 1995.

PLANET TYPE
Gas Giant
DISCOVERY DATE
1995
MASS
0.46 Jupiters
PLANET RADIUS
1.27 x Jupiter
(estimate)
ORBITAL RADIUS
0.0527 AU
ORBITAL PERIOD
4.2 days
ECCENTRICITY
0.01
DETECTION METHOD