Finding Earth 2.0
HD 81040 · G2/G3

HD 81040 b

Rank #626 of the ranked catalogue · Discovered by Radial Velocity in 2005

HZ 0%measured

0.112

Earth-2.0 index

0.395

Earth Similarity Index

0%

Habitable-zone probability

12.60 R⊕

Radius

Planet

Mass2301.078 M⊕measured
Bulk density6.320 g/cm³
Orbital period1002.7000 days
Semi-major axis1.94600 au
Eccentricity0.525
Incident flux0.221 S⊕
Equilibrium temperature174.3 K
Maximum angular separation56.51 masReflected-light contrast 7.28e-9 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 coverage50%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 81040
Spectral typeG2/G3
Effective temperature5755 K
Radius0.910 R☉
Mass0.990 M☉
Distance34.4 pc / 112.3 ly
DiscoveryRadial Velocity, 2005