Finding Earth 2.0
HD 41004 A · K1/K2 V

HD 41004 A b

Discovered by Radial Velocity in 2004

unknownM sin i

Earth-2.0 index

Earth Similarity Index

Habitable-zone probability

13.20 R⊕

Radius

Planet

Mass807.250 M⊕M sin i
Bulk density1.930 g/cm³
Orbital period963.0000 days
Semi-major axis— au
Eccentricity0.740
Incident flux— S⊕
Equilibrium temperature— K
Maximum angular separation51.13 masReflected-light contrast 8.59e-9 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources5 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage44%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 41004 A
Spectral typeK1/K2 V
Effective temperature5310 K
Radius0.850 R☉
Mass0.950 M☉
Distance36.7 pc / 119.7 ly
DiscoveryRadial Velocity, 2004