HD 128311 · K0
HD 128311 b
Rank #1350 of the ranked catalogue · Discovered by Radial Velocity in 2002
HZ 0%M sin i
0.102
Earth-2.0 index
0.357
Earth Similarity Index
0%
Habitable-zone probability
13.50 R⊕
Radius
Planet
Mass562.241 M⊕M sin i
Bulk density1.260 g/cm³
Orbital period453.0190 days
Semi-major axis1.08400 au
Eccentricity0.303
Incident flux0.262 S⊕
Equilibrium temperature181.9 K
Maximum angular separation66.38 masReflected-light contrast 2.69e-8 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 coverage58%0% median composite-to-default difference over shared parameters.
Host star & system
HostHD 128311
Spectral typeK0
Effective temperature4965 K
Radius0.760 R☉
Mass0.828 M☉
Distance16.3 pc / 53.3 ly
DiscoveryRadial Velocity, 2002