Finding Earth 2.0
HAT-P-2 · F8

HAT-P-2 c

Discovered by Radial Velocity in 2023

unknownmeasured

Earth-2.0 index

Earth Similarity Index

Habitable-zone probability

12.40 R⊕

Radius

Planet

Mass3400.764 M⊕measured
Bulk density9.800 g/cm³
Orbital period8500.0000 days
Semi-major axis— au
Eccentricity0.370
Incident flux— S⊕
Equilibrium temperature— K
Maximum angular separation70.16 masReflected-light contrast 3.32e-10 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources8 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage56%0% median composite-to-default difference over shared parameters.

Host star & system

HostHAT-P-2
Spectral typeF8
Effective temperature6412 K
Radius1.416 R☉
Mass1.330 M☉
Distance127.8 pc / 416.7 ly
DiscoveryRadial Velocity, 2023