HD 128717
HD 128717 b
Rank #2476 of the ranked catalogue · Discovered by Astrometry in 2025
HZ 0%measured
0.092
Earth-2.0 index
0.245
Earth Similarity Index
0%
Habitable-zone probability
12.10 R⊕
Radius
Planet
Mass6293.002 M⊕measured
Bulk density19.500 g/cm³
Orbital period3420.0000 days
Semi-major axis4.85000 au
Eccentricity0.850
Incident flux0.089 S⊕
Equilibrium temperature138.9 K
Maximum angular separation65.86 masReflected-light contrast 1.08e-9 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 coverage67%0% median composite-to-default difference over shared parameters.
Host star & system
HostHD 128717
Spectral typeF
Effective temperature6210 K
Radius1.248 R☉
Mass1.212 M☉
Distance73.6 pc / 240.2 ly
DiscoveryAstrometry, 2025