HD 221420 b is a gas giant exoplanet that orbits a G-type star. Its mass is 22.9 Jupiters, it takes 27.6 years to complete one orbit of its star, and is 10.15 AU from its star. Its discovery was announced in 2019.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2019
MASS
22.9 Jupiters
PLANET RADIUS
1.07 x Jupiter
(estimate)
ORBITAL RADIUS
10.15 AU
ORBITAL PERIOD
27.6 years
ECCENTRICITY
0.14
DETECTION METHOD