Finding Earth 2.0
HAT-P-42

HAT-P-42 b

Rank #5084 of the ranked catalogue · Discovered by Transit in 2012

HZ 0%measured

0.066

Earth-2.0 index

0.085

Earth Similarity Index

0%

Habitable-zone probability

14.35 R⊕

Radius

Planet

Mass331.801 M⊕measured
Bulk density0.610 g/cm³
Orbital period4.6419 days
Semi-major axis0.05750 au
Eccentricity0.000
Incident flux684.097 S⊕
Equilibrium temperature1300.0 K
Transit-time σ at 203065.0 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.14 masReflected-light contrast 1.08e-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-42
Spectral typeG
Effective temperature5743 K
Radius1.530 R☉
Mass1.178 M☉
Distance405.2 pc / 1321.7 ly
DiscoveryTransit, 2012