HD 204941

Planetary system · 93.7 light-years away · also HD 204941, HIP 106353

HD 204941 is 93.7 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this K1/2V star; the first was found in 2011 by radial velocity (La Silla Observatory).

Fly there in 3D

Worth knowing

HD 204941 b takes 4.7 years to go round its star once.

HD 204941 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 typeK1/2V
Surface temperature5,026 K
Mass0.58 solar masses
Radius0.78 solar radii
Luminosity0.31 times the Sun
Apparent magnitude8.45
Ageabout 6.67 billion years
Distance from the Sun93.7 light-years (28.7 parsecs)
Position (J2000)RA 323.0967°, Dec -20.9580°
ConstellationCapricornus

The other star

HD 204941 B is a M0V star of magnitude 11.39, moving through space with it. In 2016 it was 56.1″ from HD 204941, at position angle 219° (Washington Double Star Catalog, 21324-2058 LDS6354): 1,611 AU on the sky at this distance. The true distance can only be larger.

Planets (1)

PlanetYearOrbitRadiusMassFound
HD 204941 b4.7 years2.550 AU10.1 R⊕ estimated73.101 M⊕ minimumRadial Velocity, 2011

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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