Exoplanet Catalog
HD 40307 d
HD 40307 d is a Neptune-like exoplanet that orbits a K-type star. Its mass is 9.5 Earths, it takes 20.4 days to complete one orbit of its star, and is 0.1321 AU from its star. Its discovery was announced in 2009.
PLANET TYPE
Neptune-like
|
DISCOVERY DATE
2009
|
MASS
9.5 Earths
|
PLANET RADIUS
0.272 x Jupiter
(estimate) |
ORBITAL RADIUS
0.1321 AU
|
ORBITAL PERIOD
20.4 days
|
ECCENTRICITY
0.07
|
DETECTION METHOD
|