GJ 3988 · M4.5 V
GJ 3988 b
Rank #129 of the ranked catalogue · Discovered by Radial Velocity in 2023
HZ 0%M sin i
0.128
Earth-2.0 index
0.742
Earth Similarity Index
0%
Habitable-zone probability
1.74 R⊕
Radius
Planet
Mass3.690 M⊕M sin i
Bulk density3.850 g/cm³
Orbital period6.9442 days
Semi-major axis0.04050 au
Eccentricity0.000
Incident flux2.450 S⊕
Equilibrium temperature318.0 K
Maximum angular separation4.09 masReflected-light contrast 3.20e-7 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 coverage83%0% median composite-to-default difference over shared parameters.
Host star & system
HostGJ 3988
Spectral typeM4.5 V
Effective temperature3273 K
Radius0.197 R☉
Mass0.184 M☉
Distance9.9 pc / 32.3 ly
DiscoveryRadial Velocity, 2023