TOI-209
TOI-209 b
Rank #3542 of the ranked catalogue · Discovered by Transit in 2026
HZ 0%inferred
0.084
Earth-2.0 index
0.267
Earth Similarity Index
0%
Habitable-zone probability
2.39 R⊕
Radius
Planet
Mass6.320 M⊕inferred
Bulk density2.530 g/cm³
Orbital period4.3794 days
Semi-major axis— au
Eccentricity—
Incident flux120.936 S⊕
Equilibrium temperature843.0 K
Transit-time σ at 203019.6 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.43 masReflected-light contrast 4.17e-7 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
HostTOI-209
Spectral typeK
Effective temperature4807 K
Radius0.743 R☉
Mass0.810 M☉
Distance113.4 pc / 369.8 ly
DiscoveryTransit, 2026