SCIENCE ›

HD 39855 b is a Neptune-like exoplanet that orbits a G-type star. Its mass is 8.5 Earths, it takes 3.2 days to complete one orbit of its star, and is 0.041 AU from its star. Its discovery was announced in 2019.

PLANET TYPE
Neptune-like
DISCOVERY DATE
2019
MASS
8.5 Earths
PLANET RADIUS
0.254 x Jupiter
(estimate)
ORBITAL RADIUS
0.041 AU
ORBITAL PERIOD
3.2 days
ECCENTRICITY
0.14
DETECTION METHOD