Barnard's star · M3.5-4 V
Barnard c
Rank #190 of the ranked catalogue · Discovered by Radial Velocity in 2025
HZ 0%M sin i
0.124
Earth-2.0 index
0.679
Earth Similarity Index
0%
Habitable-zone probability
0.74 R⊕
Radius
Planet
Mass0.335 M⊕M sin i
Bulk density4.490 g/cm³
Orbital period4.1244 days
Semi-major axis0.02740 au
Eccentricity0.080
Incident flux4.729 S⊕
Equilibrium temperature374.8 K
Maximum angular separation15.00 masReflected-light contrast 1.28e-7 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 coverage75%0% median composite-to-default difference over shared parameters.
Host star & system
HostBarnard's star
Spectral typeM3.5-4 V
Effective temperature3195 K
Radius0.185 R☉
Mass0.162 M☉
Distance1.8 pc / 6.0 ly
DiscoveryRadial Velocity, 2025