51 Peg · G5V
51 Peg b
Rank #5209 of the ranked catalogue · Discovered by Radial Velocity in 1995
HZ 0%measured
0.064
Earth-2.0 index
0.086
Earth Similarity Index
0%
Habitable-zone probability
14.10 R⊕
Radius
Planet
Mass193.875 M⊕measured
Bulk density0.380 g/cm³
Orbital period4.2308 days
Semi-major axis0.05200 au
Eccentricity0.006
Incident flux506.178 S⊕
Equilibrium temperature1205.7 K
Maximum angular separation3.36 masReflected-light contrast 1.28e-5 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
Host51 Peg
Spectral typeG5V
Effective temperature5761 K
Radius1.190 R☉
Mass1.070 M☉
Distance15.5 pc / 50.4 ly
DiscoveryRadial Velocity, 1995