Finding Earth 2.0
TOI-4034

TOI-4034 b

Rank #5538 of the ranked catalogue · Discovered by Transit in 2026

HZ 0%measured

0.055

Earth-2.0 index

0.051

Earth Similarity Index

0%

Habitable-zone probability

17.71 R⊕

Radius

Planet

Mass276.511 M⊕measured
Bulk density0.275 g/cm³
Orbital period1.8021 days
Semi-major axis0.03289 au
Eccentricity0.000
Incident flux1870.780 S⊕
Equilibrium temperature1671.7 K
Transit-time σ at 20301.9 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.04 masReflected-light contrast 5.03e-5 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 coverage92%0% median composite-to-default difference over shared parameters.

Host star & system

HostTOI-4034
Spectral typeG
Effective temperature5891 K
Radius1.830 R☉
Mass1.190 M☉
Distance745.1 pc / 2430.3 ly
DiscoveryTransit, 2026