TOI-2257 · M3
TOI-2257 b
Rank #41 of the ranked catalogue · Discovered by Transit in 2021
HZ 100%inferred
0.234
Earth-2.0 index
0.752
Earth Similarity Index
100%
Habitable-zone probability
2.19 R⊕
Radius
Planet
Mass5.450 M⊕inferred
Bulk density2.840 g/cm³
Orbital period35.1893 days
Semi-major axis0.14500 au
Eccentricity0.496
Incident flux0.670 S⊕
Equilibrium temperature230.0 K
Transit-time σ at 203012.9 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation2.51 masReflected-light contrast 3.97e-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 coverage75%0% median composite-to-default difference over shared parameters.
Host star & system
HostTOI-2257
Spectral typeM3
Effective temperature3430 K
Radius0.313 R☉
Mass0.328 M☉
Distance57.8 pc / 188.5 ly
DiscoveryTransit, 2021