Finding Earth 2.0
HD 199509 · G3V

HD 199509 b

Rank #1663 of the ranked catalogue · Discovered by Radial Velocity in 2022

HZ 0%M sin i

0.099

Earth-2.0 index

0.356

Earth Similarity Index

0%

Habitable-zone probability

7.43 R⊕

Radius

Planet

Mass43.225 M⊕M sin i
Bulk density0.579 g/cm³
Orbital period99.6217 days
Semi-major axis0.42600 au
Eccentricity0.373
Incident flux4.539 S⊕
Equilibrium temperature371.0 K
Maximum angular separation17.53 masReflected-light contrast 5.28e-8 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources5 · 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 199509
Spectral typeG3V
Effective temperature5796 K
Radius0.920 R☉
Mass1.040 M☉
Distance24.3 pc / 79.3 ly
DiscoveryRadial Velocity, 2022