Finding Earth 2.0
HD 86728 · G1V

HD 86728 b

Rank #1978 of the ranked catalogue · Discovered by Radial Velocity in 2025

HZ 0%M sin i

0.096

Earth-2.0 index

0.331

Earth Similarity Index

0%

Habitable-zone probability

3.03 R⊕

Radius

Planet

Mass9.430 M⊕M sin i
Bulk density1.860 g/cm³
Orbital period31.1515 days
Semi-major axis0.19160 au
Eccentricity0.067
Incident flux37.183 S⊕
Equilibrium temperature627.7 K
Maximum angular separation12.84 masReflected-light contrast 4.34e-8 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 86728
Spectral typeG1V
Effective temperature5610 K
Radius1.237 R☉
Mass0.967 M☉
Distance14.9 pc / 48.7 ly
DiscoveryRadial Velocity, 2025