HD 74156

Planetary system · 187.9 light-years away · also HD 74156, HIP 42723

HD 74156 is 188 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G0 star; the first was found in 2003 by radial velocity (Haute-Provence Observatory).

Fly there in 3D

Worth knowing

HD 74156 b goes round its star every 51.6 days, 1.7 times as often as Mercury goes round the Sun.

The star

Spectral typeG0
Surface temperature6,068 K
Mass1.1 solar masses
Radius1.51058 solar radii
Luminosity2.516 times the Sun
Apparent magnitude7.61
Ageabout 3.7 billion years
Distance from the Sun187.9 light-years (57.6 parsecs)
Position (J2000)RA 130.6048°, Dec 4.5772°
ConstellationHydra

Planets (2)

PlanetYearOrbitRadiusMassFound
HD 74156 b51.6 days0.280 AU13.5 R⊕ estimated532.36 M⊕ minimumRadial Velocity, 2003
HD 74156 c6.7 years3.678 AU12.5 R⊕ estimated2754 M⊕Radial Velocity, 2003

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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