HAT-P-31
HAT-P-31 b
Rank #4801 of the ranked catalogue · Discovered by Transit in 2011
HZ 0%measured
0.071
Earth-2.0 index
0.104
Earth Similarity Index
0%
Habitable-zone probability
12.22 R⊕
Radius
Planet
Mass721.474 M⊕measured
Bulk density2.180 g/cm³
Orbital period5.0054 days
Semi-major axis0.06100 au
Eccentricity0.250
Incident flux746.903 S⊕
Equilibrium temperature1328.9 K
Transit-time σ at 203093.3 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.18 masReflected-light contrast 6.96e-6 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources6 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage67%0% median composite-to-default difference over shared parameters.
Host star & system
HostHAT-P-31
Spectral typeF
Effective temperature6065 K
Radius1.390 R☉
Mass1.310 M☉
Distance344.1 pc / 1122.1 ly
DiscoveryTransit, 2011