Finding Earth 2.0
HD 217958

HD 217958 b

Rank #2424 of the ranked catalogue · Discovered by Radial Velocity in 2022

HZ 0%measured

0.092

Earth-2.0 index

0.249

Earth Similarity Index

0%

Habitable-zone probability

14.20 R⊕

Radius

Planet

Mass166.542 M⊕measured
Bulk density0.320 g/cm³
Orbital period2560.1977 days
Semi-major axis3.75800 au
Eccentricity0.156
Incident flux0.139 S⊕
Equilibrium temperature155.2 K
Maximum angular separation60.81 masReflected-light contrast 2.48e-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 coverage50%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 217958
Spectral typeG
Effective temperature5931 K
Radius1.326 R☉
Mass1.080 M☉
Distance61.8 pc / 201.6 ly
DiscoveryRadial Velocity, 2022