artist rendition
Artist's concept

2MASS J21402931+1625183 A b is a gas giant exoplanet that orbits a M-type star. Its mass is 20.95 Jupiter and it takes 20.1 years to complete one orbit of its star. Its discovery was announced in 2009.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2009
MASS
20.95 Jupiter
PLANET RADIUS
0.92 x Jupiter
ORBITAL RADIUS
Unknown
ORBITAL PERIOD
20.1 years
ECCENTRICITY
0.26
DETECTION METHOD
Imaging