Kepler-18
Kepler-18 d
Rank #3275 of the ranked catalogue · Discovered by Transit in 2011
HZ 0%measured
0.086
Earth-2.0 index
0.177
Earth Similarity Index
0%
Habitable-zone probability
6.98 R⊕
Radius
Planet
Mass16.400 M⊕measured
Bulk density0.270 g/cm³
Orbital period14.8589 days
Semi-major axis0.11720 au
Eccentricity0.000
Incident flux51.922 S⊕
Equilibrium temperature682.3 K
Transit-time σ at 203028.5 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.27 masReflected-light contrast 6.16e-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-18
Spectral typeG
Effective temperature5345 K
Radius1.108 R☉
Mass0.972 M☉
Distance433.0 pc / 1412.4 ly
DiscoveryTransit, 2011