Finding Earth 2.0
Kepler-399

Kepler-399 c

Rank #1728 of the ranked catalogue · Discovered by Transit in 2014

HZ 0%inferred

0.098

Earth-2.0 index

0.434

Earth Similarity Index

0%

Habitable-zone probability

1.43 R⊕

Radius

Planet

Mass2.630 M⊕inferred
Bulk density4.940 g/cm³
Orbital period26.6757 days
Semi-major axis0.15500 au
Eccentricity0.000
Incident flux15.690 S⊕
Equilibrium temperature505.9 K
Transit-time σ at 203069.7 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.21 masReflected-light contrast 1.48e-8 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources6 · 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

HostKepler-399
Spectral typeG
Effective temperature5502 K
Radius0.680 R☉
Mass0.902 M☉
Distance740.5 pc / 2415.3 ly
DiscoveryTransit, 2014