HD 203387

Planetary system · 201.4 light-years away · also HD 203387

HD 203387 is 201 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,174 K star; the first was found in 2022 by radial velocity (Multiple Observatories).

Fly there in 3D

Worth knowing

HD 203387 c takes 6.8 years to go round its star once.

The star

Surface temperature5,174 K
Mass2.817 solar masses
Radius10.5852 solar radii
Luminosity72.44 times the Sun
Apparent magnitude4.28
Distance from the Sun201.4 light-years (61.7 parsecs)
Position (J2000)RA 320.5618°, Dec -16.8345°
ConstellationCapricornus

Planets (2)

PlanetYearOrbitRadiusMassFound
HD 203387 b512.5 days1.771 AU13.1 R⊕ estimated1106 M⊕ minimumRadial Velocity, 2022
HD 203387 c6.8 years5.067 AU12.6 R⊕ estimated2378.9 M⊕Radial Velocity, 2022

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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