Finding Earth 2.0
HD 82943 · G2/3V

HD 82943 b

Rank #397 of the ranked catalogue · Discovered by Radial Velocity in 2003

HZ 5%measured

0.117

Earth-2.0 index

0.448

Earth Similarity Index

5%

Habitable-zone probability

13.50 R⊕

Radius

Planet

Mass534.250 M⊕measured
Bulk density1.190 g/cm³
Orbital period441.4700 days
Semi-major axis1.18306 au
Eccentricity0.162
Incident flux1.117 S⊕
Equilibrium temperature261.3 K
Maximum angular separation42.88 masReflected-light contrast 2.26e-8 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources4 · 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 82943
Spectral typeG2/3V
Effective temperature5935 K
Radius1.183 R☉
Mass1.080 M☉
Distance27.6 pc / 90.0 ly
DiscoveryRadial Velocity, 2003