Finding Earth 2.0
alf Ari · K2III

alf Ari b

Rank #4385 of the ranked catalogue · Discovered by Radial Velocity in 2010

HZ 0%M sin i

0.075

Earth-2.0 index

0.191

Earth Similarity Index

0%

Habitable-zone probability

13.40 R⊕

Radius

Planet

Mass572.070 M⊕M sin i
Bulk density1.310 g/cm³
Orbital period380.8000 days
Semi-major axis1.20000 au
Eccentricity0.250
Incident flux59.654 S⊕
Equilibrium temperature706.4 K
Maximum angular separation59.38 masReflected-light contrast 2.16e-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

Hostalf Ari
Spectral typeK2III
Effective temperature4553 K
Radius13.900 R☉
Mass1.500 M☉
Distance20.2 pc / 65.9 ly
DiscoveryRadial Velocity, 2010