Kapteyn · M2.0V
Kapteyn c
Rank #489 of the ranked catalogue · Discovered by Radial Velocity in 2014
HZ 5%M sin i
0.114
Earth-2.0 index
0.540
Earth Similarity Index
5%
Habitable-zone probability
2.54 R⊕
Radius
Planet
Mass7.000 M⊕M sin i
Bulk density2.350 g/cm³
Orbital period121.5400 days
Semi-major axis0.31100 au
Eccentricity0.230
Incident flux0.167 S⊕
Equilibrium temperature162.4 K
Maximum angular separation79.07 masReflected-light contrast 1.16e-8 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources3 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage67%0% median composite-to-default difference over shared parameters.
Host star & system
HostKapteyn
Spectral typeM2.0V
Effective temperature3550 K
Radius0.291 R☉
Mass0.281 M☉
Distance3.9 pc / 12.8 ly
DiscoveryRadial Velocity, 2014