Finding Earth 2.0
Kepler-399

Kepler-399 b

Rank #2313 of the ranked catalogue · Discovered by Transit in 2014

HZ 0%inferred

0.093

Earth-2.0 index

0.368

Earth Similarity Index

0%

Habitable-zone probability

0.96 R⊕

Radius

Planet

Mass0.840 M⊕inferred
Bulk density5.220 g/cm³
Orbital period14.4253 days
Semi-major axis0.10300 au
Eccentricity0.000
Incident flux35.630 S⊕
Equilibrium temperature621.0 K
Transit-time σ at 2030108.6 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.14 masReflected-light contrast 1.51e-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