HD 40307 · K2.5 V
HD 40307 d
Discovered by Radial Velocity in 2009
HZ 0%upper limit
—
Earth-2.0 index
—
Earth Similarity Index
0%
Habitable-zone probability
— R⊕
Radius
Planet
Mass1775.389 M⊕upper limit
Bulk density—
Orbital period20.4320 days
Semi-major axis0.13210 au
Eccentricity0.070
Incident flux13.158 S⊕
Equilibrium temperature484.1 K
Maximum angular separation10.21 mas
Composite parameter sources5 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage70%0% median composite-to-default difference over shared parameters.
Host star & system
HostHD 40307
Spectral typeK2.5 V
Effective temperature4956 K
Radius0.717 R☉
Mass0.770 M☉
Distance12.9 pc / 42.2 ly
DiscoveryRadial Velocity, 2009