HD 50554

Planetary system · 101.7 light-years away · also HD 50554, HIP 33212

HD 50554 is 102 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this F8 V star; the first was found in 2002 by radial velocity (Lick Observatory).

Fly there in 3D

Worth knowing

HD 50554 c goes round its star every 5.97 days, 15 times as often as Mercury goes round the Sun.

The star

Spectral typeF8 V
Surface temperature6,050 K
Mass1.1 solar masses
Radius1.02 solar radii
Luminosity1.498 times the Sun
Apparent magnitude6.8561
Ageabout 2.16 billion years
Distance from the Sun101.7 light-years (31.2 parsecs)
Position (J2000)RA 103.6783°, Dec 24.2451°
ConstellationGemini

Planets (3)

PlanetYearOrbitRadiusMassFound
HD 50554 c5.97 days0.0652 AU1.31 R⊕5.3 M⊕Transit, 2026
HD 50554 d28.1 days0.183 AU1.41 R⊕10.4 M⊕Transit, 2026
HD 50554 b3.4 years2.339 AU12.8 R⊕ estimated1859.3 M⊕Radial Velocity, 2002

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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