MOA-2011-BLG-291L b is a Neptune-like exoplanet that orbits an unknown-type star. Its mass is 18 Earths, it takes 1.5 years to complete one orbit of its star, and is 0.69 AU from its star. Its discovery was announced in 2018.

PLANET TYPE
Neptune-like
DISCOVERY DATE
2018
MASS
18 Earths
PLANET RADIUS
0.396 x Jupiter
(estimate)
ORBITAL RADIUS
0.69 AU
ORBITAL PERIOD
1.5 years
ECCENTRICITY
0.0
DETECTION METHOD