55 Cnc · G8 V
55 Cnc b
Rank #3502 of the ranked catalogue · Discovered by Radial Velocity in 1996
HZ 0%measured
0.084
Earth-2.0 index
0.176
Earth Similarity Index
0%
Habitable-zone probability
13.90 R⊕
Radius
Planet
Mass263.978 M⊕measured
Bulk density0.540 g/cm³
Orbital period14.6516 days
Semi-major axis0.11800 au
Eccentricity0.003
Incident flux45.634 S⊕
Equilibrium temperature660.7 K
Maximum angular separation9.38 masReflected-light contrast 2.41e-6 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources6 · 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
Host55 Cnc
Spectral typeG8 V
Effective temperature5198 K
Radius0.980 R☉
Mass1.015 M☉
Distance12.6 pc / 41.0 ly
DiscoveryRadial Velocity, 1996