Finding Earth 2.0
HD 12661 · K0

HD 12661 c

Rank #1033 of the ranked catalogue · Discovered by Radial Velocity in 2002

HZ 0%measured

0.106

Earth-2.0 index

0.340

Earth Similarity Index

0%

Habitable-zone probability

13.20 R⊕

Radius

Planet

Mass899.454 M⊕measured
Bulk density2.150 g/cm³
Orbital period1708.0000 days
Semi-major axis2.81450 au
Eccentricity0.031
Incident flux0.146 S⊕
Equilibrium temperature157.1 K
Maximum angular separation74.36 masReflected-light contrast 3.82e-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 coverage67%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 12661
Spectral typeK0
Effective temperature5748 K
Radius1.110 R☉
Mass1.020 M☉
Distance37.8 pc / 123.4 ly
DiscoveryRadial Velocity, 2002