Exoplanet · Kapteyn's Star
Kapteyn c
Orbit0.31 AU
Year121.5 days
Mass≥ 7 M⊕
Temperature~166 K (estimated)
It circles Kapteyn's Star once every 121.5 days, 0.31 AU out: about 1.2 times closer than Mercury is to the Sun.
Found in 2014 by the radial velocity method, which measures the star's wobble. That gives a minimum mass, so it could be heavier.
Sources
See it in 3D →13point8 is an independent educational project. Every fact links to its source; send corrections to [email protected]. Privacy