Kepler-21 · F6 IV
Kepler-21 b
Rank #4555 of the ranked catalogue · Discovered by Transit in 2012
HZ 0%measured
0.074
Earth-2.0 index
0.114
Earth Similarity Index
0%
Habitable-zone probability
1.64 R⊕
Radius
Planet
Mass7.500 M⊕measured
Bulk density9.300 g/cm³
Orbital period2.7858 days
Semi-major axis0.04340 au
Eccentricity0.000
Incident flux2749.000 S⊕
Equilibrium temperature1840.6 K
Transit-time σ at 203012.3 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.40 masReflected-light contrast 2.48e-7 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 coverage100%0% median composite-to-default difference over shared parameters.
Host star & system
HostKepler-21
Spectral typeF6 IV
Effective temperature6305 K
Radius1.902 R☉
Mass1.408 M☉
Distance108.5 pc / 354.0 ly
DiscoveryTransit, 2012