HD 219666 · G5 V
HD 219666 b
Rank #4439 of the ranked catalogue · Discovered by Transit in 2018
HZ 0%measured
0.075
Earth-2.0 index
0.123
Earth Similarity Index
0%
Habitable-zone probability
4.90 R⊕
Radius
Planet
Mass17.600 M⊕measured
Bulk density0.870 g/cm³
Orbital period6.0345 days
Semi-major axis0.06356 au
Eccentricity0.050
Incident flux598.441 S⊕
Equilibrium temperature1257.2 K
Transit-time σ at 20303.3 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.68 masReflected-light contrast 1.03e-6 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 coverage75%0% median composite-to-default difference over shared parameters.
Host star & system
HostHD 219666
Spectral typeG5 V
Effective temperature5540 K
Radius1.059 R☉
Mass1.020 M☉
Distance94.2 pc / 307.1 ly
DiscoveryTransit, 2018