HD 20868 · K3/4 IV
HD 20868 b
Rank #1593 of the ranked catalogue · Discovered by Radial Velocity in 2008
HZ 76%M sin i
0.100
Earth-2.0 index
0.350
Earth Similarity Index
76%
Habitable-zone probability
13.70 R⊕
Radius
Planet
Mass397.288 M⊕M sin i
Bulk density0.849 g/cm³
Orbital period380.8500 days
Semi-major axis0.95000 au
Eccentricity0.750
Incident flux0.328 S⊕
Equilibrium temperature192.3 K
Maximum angular separation19.91 masReflected-light contrast 3.61e-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 20868
Spectral typeK3/4 IV
Effective temperature4802 K
Radius0.760 R☉
Mass0.390 M☉
Distance47.7 pc / 155.6 ly
DiscoveryRadial Velocity, 2008