TOI-1243 · M2.0 V
TOI-1243 b
Rank #393 of the ranked catalogue · Discovered by Transit in 2026
HZ 0%measured
0.117
Earth-2.0 index
0.453
Earth Similarity Index
0%
Habitable-zone probability
2.33 R⊕
Radius
Planet
Mass7.700 M⊕measured
Bulk density3.300 g/cm³
Orbital period4.6595 days
Semi-major axis— au
Eccentricity—
Incident flux17.266 S⊕
Equilibrium temperature518.2 K
Transit-time σ at 20304.4 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation1.01 masReflected-light contrast 4.92e-7 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources3 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage90%0% median composite-to-default difference over shared parameters.
Host star & system
HostTOI-1243
Spectral typeM2.0 V
Effective temperature3515 K
Radius0.511 R☉
Mass0.515 M☉
Distance43.2 pc / 140.9 ly
DiscoveryTransit, 2026