WASP-138
WASP-138 b
Rank #5093 of the ranked catalogue · Discovered by Transit in 2016
HZ 0%measured
0.066
Earth-2.0 index
0.085
Earth Similarity Index
0%
Habitable-zone probability
12.22 R⊕
Radius
Planet
Mass387.753 M⊕measured
Bulk density1.200 g/cm³
Orbital period3.6344 days
Semi-major axis0.04940 au
Eccentricity—
Incident flux1133.730 S⊕
Equilibrium temperature1475.0 K
Transit-time σ at 203010.3 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.12 masReflected-light contrast 1.06e-5 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 coverage91%0% median composite-to-default difference over shared parameters.
Host star & system
HostWASP-138
Spectral typeF
Effective temperature6272 K
Radius1.360 R☉
Mass1.220 M☉
Distance414.2 pc / 1351.0 ly
DiscoveryTransit, 2016