Finding Earth 2.0
HD 213240 · G0/1 V

HD 213240 b

Rank #278 of the ranked catalogue · Discovered by Radial Velocity in 2001

HZ 100%measured

0.121

Earth-2.0 index

0.507

Earth Similarity Index

100%

Habitable-zone probability

12.80 R⊕

Radius

Planet

Mass1655.886 M⊕measured
Bulk density4.340 g/cm³
Orbital period882.7000 days
Semi-major axis1.89000 au
Eccentricity0.420
Incident flux0.752 S⊕
Equilibrium temperature236.7 K
Maximum angular separation46.24 masReflected-light contrast 7.96e-9 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 coverage67%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 213240
Spectral typeG0/1 V
Effective temperature5979 K
Radius1.510 R☉
Mass1.570 M☉
Distance40.9 pc / 133.3 ly
DiscoveryRadial Velocity, 2001