HAT-P-18 · K2
HAT-P-18 b
Rank #4114 of the ranked catalogue · Discovered by Transit in 2010
HZ 0%measured
0.079
Earth-2.0 index
0.139
Earth Similarity Index
0%
Habitable-zone probability
11.15 R⊕
Radius
Planet
Mass62.610 M⊕measured
Bulk density0.250 g/cm³
Orbital period5.5080 days
Semi-major axis0.05590 au
Eccentricity0.084
Incident flux82.241 S⊕
Equilibrium temperature765.5 K
Transit-time σ at 203012.2 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.35 masReflected-light contrast 6.91e-6 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 coverage92%0% median composite-to-default difference over shared parameters.
Host star & system
HostHAT-P-18
Spectral typeK2
Effective temperature4803 K
Radius0.749 R☉
Mass0.770 M☉
Distance161.4 pc / 526.4 ly
DiscoveryTransit, 2010