Finding Earth 2.0
HD 18143 · K2

HD 18143 c

Rank #4936 of the ranked catalogue · Discovered by Radial Velocity in 2022

HZ 0%measured

0.069

Earth-2.0 index

0.106

Earth Similarity Index

0%

Habitable-zone probability

12.50 R⊕

Radius

Planet

Mass3177.648 M⊕measured
Bulk density8.940 g/cm³
Orbital period28982.4176 days
Semi-major axis17.53000 au
Eccentricity0.194
Incident flux0.002 S⊕
Equilibrium temperature50.8 K
Maximum angular separation778.27 masReflected-light contrast 8.83e-11 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources5 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage50%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 18143
Spectral typeK2
Effective temperature5078 K
Radius0.870 R☉
Mass0.850 M☉
Distance22.5 pc / 73.5 ly
DiscoveryRadial Velocity, 2022