HR 8799 · A5 V
HR 8799 d
Rank #3617 of the ranked catalogue · Discovered by Imaging in 2008
HZ 0% ⚠measured
0.083
Earth-2.0 index
0.173
Earth Similarity Index
0%
Habitable-zone probability
13.00 R⊕
Radius
Planet
Mass3000.000 M⊕measured
Bulk density7.500 g/cm³
Orbital period37000.0000 days
Semi-major axis24.00000 au
Eccentricity0.600
Incident flux0.009 S⊕
Equilibrium temperature77.2 K
Maximum angular separation581.90 masReflected-light contrast 5.09e-11 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources5 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage50%0% median composite-to-default difference over shared parameters.
Host star & system
HostHR 8799
Spectral typeA5 V
Effective temperature7205 K
Radius1.493 R☉
Mass1.500 M☉
Distance41.2 pc / 134.5 ly
DiscoveryImaging, 2008