K2-128
K2-128 b
Rank #1851 of the ranked catalogue · Discovered by Transit in 2017
HZ 0%inferred
0.097
Earth-2.0 index
0.362
Earth Similarity Index
0%
Habitable-zone probability
1.42 R⊕
Radius
Planet
Mass2.600 M⊕inferred
Bulk density4.990 g/cm³
Orbital period5.6758 days
Semi-major axis0.05600 au
Eccentricity0.230
Incident flux68.800 S⊕
Equilibrium temperature732.1 K
Transit-time σ at 2030550.9 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.49 masReflected-light contrast 1.12e-7 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources5 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage75%0% median composite-to-default difference over shared parameters.
Host star & system
HostK2-128
Spectral typeK
Effective temperature4470 K
Radius0.778 R☉
Mass0.711 M☉
Distance114.6 pc / 373.9 ly
DiscoveryTransit, 2017