K2-258
K2-258 b
Rank #3137 of the ranked catalogue · Discovered by Transit in 2018
HZ 0%inferred
0.087
Earth-2.0 index
0.269
Earth Similarity Index
0%
Habitable-zone probability
3.00 R⊕
Radius
Planet
Mass9.270 M⊕inferred
Bulk density1.890 g/cm³
Orbital period19.0921 days
Semi-major axis0.14900 au
Eccentricity—
Incident flux84.299 S⊕
Equilibrium temperature770.2 K
Transit-time σ at 20302342.7 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.23 masReflected-light contrast 7.04e-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 coverage73%0% median composite-to-default difference over shared parameters.
Host star & system
HostK2-258
Spectral typeF
Effective temperature6351 K
Radius1.310 R☉
Mass1.210 M☉
Distance661.9 pc / 2158.7 ly
DiscoveryTransit, 2018