HD 80606

Planetary system · 216.8 light-years away · also HD 80606, HIP 45982

HD 80606 is 217 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G5 star; the first was found in 2001 by radial velocity (Multiple Observatories).

Fly there in 3D

Worth knowing

HD 80606 b takes 111.4 days to go round its star once.

HD 80606 is one of 2 stars in its system: the other is drawn where the Washington Double Star Catalog measures it on the sky.

The star

Spectral typeG5
Surface temperature5,565 K
Mass1.05 solar masses
Radius1.05 solar radii
Luminosity0.9946 times the Sun
Apparent magnitude9.06
Ageabout 5.9 billion years
Distance from the Sun216.8 light-years (66.5 parsecs)
Position (J2000)RA 140.6570°, Dec 50.6038°
ConstellationUrsa Major

The other star

HD 80606 B is a G5 star of magnitude 9.17, moving through space with it. In 2019 it was 20.5″ from HD 80606, at position angle 89° (Washington Double Star Catalog, 09227+5036 STF1341): 1,363 AU on the sky at this distance. The true distance can only be larger.

Planets (1)

PlanetYearOrbitRadiusMassFound
HD 80606 b111.4 days0.460 AU11.568 R⊕1323.5 M⊕Radial Velocity, 2001

Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.

Sources

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