Finding Earth 2.0
HD 216520 · K2

HD 216520 b

Rank #803 of the ranked catalogue · Discovered by Radial Velocity in 2020

HZ 0%M sin i

0.109

Earth-2.0 index

0.452

Earth Similarity Index

0%

Habitable-zone probability

3.18 R⊕

Radius

Planet

Mass10.260 M⊕M sin i
Bulk density1.750 g/cm³
Orbital period35.4500 days
Semi-major axis0.19800 au
Eccentricity0.090
Incident flux9.009 S⊕
Equilibrium temperature440.4 K
Maximum angular separation10.13 masReflected-light contrast 4.48e-8 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 216520
Spectral typeK2
Effective temperature5103 K
Radius0.760 R☉
Mass0.820 M☉
Distance19.6 pc / 63.8 ly
DiscoveryRadial Velocity, 2020