K2-18 · M2.5 V
K2-18 c
Rank #580 of the ranked catalogue · Discovered by Radial Velocity in 2017
HZ 0%M sin i
0.112
Earth-2.0 index
0.513
Earth Similarity Index
0%
Habitable-zone probability
2.65 R⊕
Radius
Planet
Mass7.510 M⊕M sin i
Bulk density2.220 g/cm³
Orbital period8.9620 days
Semi-major axis0.06000 au
Eccentricity0.470
Incident flux7.028 S⊕
Equilibrium temperature413.9 K
Maximum angular separation1.58 masReflected-light contrast 3.39e-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
HostK2-18
Spectral typeM2.5 V
Effective temperature3457 K
Radius0.411 R☉
Mass0.359 M☉
Distance38.0 pc / 124.0 ly
DiscoveryRadial Velocity, 2017