Finding Earth 2.0
HD 100508 · K1 IV

HD 100508 b

Rank #3503 of the ranked catalogue · Discovered by Radial Velocity in 2026

HZ 0%measured

0.084

Earth-2.0 index

0.189

Earth Similarity Index

0%

Habitable-zone probability

13.70 R⊕

Radius

Planet

Mass381.394 M⊕measured
Bulk density0.815 g/cm³
Orbital period5681.0000 days
Semi-major axis6.11000 au
Eccentricity0.420
Incident flux0.022 S⊕
Equilibrium temperature97.4 K
Maximum angular separation186.54 masReflected-light contrast 8.73e-10 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 coverage58%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 100508
Spectral typeK1 IV
Effective temperature5419 K
Radius1.018 R☉
Mass0.940 M☉
Distance32.8 pc / 106.8 ly
DiscoveryRadial Velocity, 2026