81 Cet · G5 III
81 Cet b
Rank #2246 of the ranked catalogue · Discovered by Radial Velocity in 2008
HZ 0%M sin i
0.094
Earth-2.0 index
0.302
Earth Similarity Index
0%
Habitable-zone probability
13.10 R⊕
Radius
Planet
Mass1051.059 M⊕M sin i
Bulk density2.570 g/cm³
Orbital period1005.5700 days
Semi-major axis2.10400 au
Eccentricity0.037
Incident flux13.007 S⊕
Equilibrium temperature482.7 K
Maximum angular separation20.78 masReflected-light contrast 6.73e-9 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 coverage67%0% median composite-to-default difference over shared parameters.
Host star & system
Host81 Cet
Spectral typeG5 III
Effective temperature4734 K
Radius11.210 R☉
Mass1.230 M☉
Distance101.3 pc / 330.3 ly
DiscoveryRadial Velocity, 2008