Kepler-20

Kepler-20 is a star 922 light years away with 6 known planets. The first was found in 2011 and the latest in 2016. It has a companion star.

Open in 3D

Planets

PlanetOrbital periodDistance from starRadius (Earths)Mass (Earths)FoundMethod
Kepler-20 b3.696 days0.04565 AU1.7739.72011Transit
Kepler-20 e6.098 days0.0637 AU0.8212011Transit
Kepler-20 c10.85 days0.0936 AU2.89411.12011Transit
Kepler-20 f19.58 days0.1387 AU0.9522011Transit
Kepler-20 g34.94 days0.2055 AUat least 19.962016Radial Velocity
Kepler-20 d77.61 days0.3474 AU2.60613.42011Transit

"At least" is a minimum mass. Radial velocity can only measure mass times the sine of the orbit's tilt.

Star

Data from the NASA Exoplanet Archive, as of October 3, 2026. In the 3D view sizes and distances are compressed and every orbit is drawn in the same plane. Where each planet sits along its orbit is made up.