Kepler-9
Kepler-9 c
Rank #2258 of the ranked catalogue · Discovered by Transit in 2010
HZ 0%measured
0.094
Earth-2.0 index
0.226
Earth Similarity Index
0%
Habitable-zone probability
8.08 R⊕
Radius
Planet
Mass29.900 M⊕measured
Bulk density0.310 g/cm³
Orbital period38.9853 days
Semi-major axis0.22700 au
Eccentricity0.067
Incident flux18.903 S⊕
Equilibrium temperature530.0 K
Transit-time σ at 2030299.8 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.36 masReflected-light contrast 2.20e-7 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources4 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage83%0% median composite-to-default difference over shared parameters.
Host star & system
HostKepler-9
Spectral typeG
Effective temperature5774 K
Radius0.958 R☉
Mass1.022 M☉
Distance628.3 pc / 2049.1 ly
DiscoveryTransit, 2010