Exoplanet Janssen

Janssen is an exoplanet in the Copernicus (55 Cancri A ) system, a K-class star 40.9 light years away in the constellation Cancer.

Exoplanet name:Janssen
Detection method:radial velocity
Distance:40.9 light-years
Mass (Earth ratio):0.02542
Radius (Earth ratio):0.17
Period:0.736539 days
Host star:Copernicus
Star designation:55 Cancri A
Star magnitude:13.5
Spectral class:K
Star mass (Sun ratio):0.91
Star temperature:5196 K