artist rendition
Artist's concept

HD 128311 b is a gas giant exoplanet that orbits an unknown-type star. Its mass is at least 1.769 Jupiter, it takes 453 days to complete one orbit of its star, and is 1.084 AU from its star. Its discovery was announced in 2002.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2002
MASS
at least 1.769 Jupiter
PLANET RADIUS
Unknown
ORBITAL RADIUS
1.084 AU
ORBITAL PERIOD
453 days
ECCENTRICITY
0.303
DETECTION METHOD
Radial Velocity