HD 164922

Planetary system · 71.8 light-years away · also HD 164922, HIP 88348

HD 164922 is 71.8 light-years from the Sun. The NASA Exoplanet Archive lists 4 planets around this G9 V star; the first was found in 2005 by radial velocity (W. M. Keck Observatory).

Fly there in 3D

Worth knowing

HD 164922 d goes round its star every 12.5 days, 7 times as often as Mercury goes round the Sun.

The star

Spectral typeG9 V
Surface temperature5,390 K
Mass0.926 solar masses
Radius0.946 solar radii
Luminosity0.71 times the Sun
Apparent magnitude7.01227
Ageabout 9.58 billion years
Distance from the Sun71.8 light-years (22.0 parsecs)
Position (J2000)RA 270.6305°, Dec 26.3104°
ConstellationHercules

Planets (4)

PlanetYearOrbitRadiusMassFound
HD 164922 d12.5 days0.103 AU1.83 R⊕ estimated4 M⊕ minimumRadial Velocity, 2020
HD 164922 e41.8 days0.229 AU3.23 R⊕ estimated10.52 M⊕ minimumRadial Velocity, 2021
HD 164922 c75.7 days0.341 AU3.66 R⊕ estimated13 M⊕ minimumRadial Velocity, 2016
HD 164922 b3.3 years2.160 AU13.3 R⊕ estimated116 M⊕ minimumRadial Velocity, 2005

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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