Finding Earth 2.0
HD 143811 A

HD 143811 AB b

Rank #4948 of the ranked catalogue · Discovered by Imaging in 2025

HZ 0%measured

0.069

Earth-2.0 index

0.095

Earth Similarity Index

0%

Habitable-zone probability

15.69 R⊕

Radius

Planet

Mass1938.753 M⊕measured
Bulk density2.760 g/cm³
Orbital period117000.0000 days
Semi-major axis63.00000 au
Eccentricity0.190
Incident flux0.001 S⊕
Equilibrium temperature46.3 K
Maximum angular separation461.17 masReflected-light contrast 1.08e-11 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources4 · 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

HostHD 143811 A
Spectral typeF
Effective temperature6791 K
Radius1.684 R☉
Mass1.320 M☉
Distance136.6 pc / 445.6 ly
DiscoveryImaging, 2025