Finding Earth 2.0
HD 217107 · G

HD 217107 b

Rank #4429 of the ranked catalogue · Discovered by Radial Velocity in 1998

HZ 0%measured

0.075

Earth-2.0 index

0.128

Earth Similarity Index

0%

Habitable-zone probability

13.60 R⊕

Radius

Planet

Mass459.580 M⊕measured
Bulk density1.000 g/cm³
Orbital period7.1270 days
Semi-major axis0.07359 au
Eccentricity0.128
Incident flux231.155 S⊕
Equilibrium temperature991.2 K
Maximum angular separation3.67 masReflected-light contrast 5.93e-6 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources6 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage58%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 217107
Spectral typeG
Effective temperature5622 K
Radius1.224 R☉
Mass1.045 M☉
Distance20.1 pc / 65.4 ly
DiscoveryRadial Velocity, 1998