Finding Earth 2.0
HAT-P-12 · K4

HAT-P-12 b

Rank #4339 of the ranked catalogue · Discovered by Transit in 2009

HZ 0%measured

0.076

Earth-2.0 index

0.132

Earth Similarity Index

0%

Habitable-zone probability

10.75 R⊕

Radius

Planet

Mass67.059 M⊕measured
Bulk density0.319 g/cm³
Orbital period3.2131 days
Semi-major axis0.03840 au
Eccentricity0.000
Incident flux118.075 S⊕
Equilibrium temperature837.9 K
Transit-time σ at 20307.6 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.27 masReflected-light contrast 1.36e-5 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-12
Spectral typeK4
Effective temperature4650 K
Radius0.701 R☉
Mass0.733 M☉
Distance142.8 pc / 465.6 ly
DiscoveryTransit, 2009