HIP 56998 · K4/5V
HD 101581 b
Rank #1741 of the ranked catalogue · Discovered by Transit in 2025
HZ 0%inferred
0.098
Earth-2.0 index
0.369
Earth Similarity Index
0%
Habitable-zone probability
0.96 R⊕
Radius
Planet
Mass0.827 M⊕inferred
Bulk density5.200 g/cm³
Orbital period4.4657 days
Semi-major axis0.04600 au
Eccentricity—
Incident flux80.000 S⊕
Equilibrium temperature760.2 K
Transit-time σ at 2030256.7 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation3.60 masReflected-light contrast 7.50e-8 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 coverage82%0% median composite-to-default difference over shared parameters.
Host star & system
HostHIP 56998
Spectral typeK4/5V
Effective temperature4675 K
Radius0.630 R☉
Mass0.653 M☉
Distance12.8 pc / 41.7 ly
DiscoveryTransit, 2025