HD 183263

Planetary system · 176.8 light-years away · also HD 183263, HIP 95740

HD 183263 is 177 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G2 IV star; the first was found in 2004 by radial velocity (W. M. Keck Observatory).

Fly there in 3D

Worth knowing

HD 183263 c takes 12.8 years to go round its star once.

The star

Spectral typeG2 IV
Surface temperature5,948 K
Mass1.06 solar masses
Radius1.23 solar radii
Luminosity1.779 times the Sun
Apparent magnitude7.86
Ageabout 8.13 billion years
Distance from the Sun176.8 light-years (54.2 parsecs)
Position (J2000)RA 292.1023°, Dec 8.3579°
ConstellationAquila

Planets (2)

PlanetYearOrbitRadiusMassFound
HD 183263 b624.9 days1.460 AU13.1 R⊕ estimated1103.2 M⊕ minimumRadial Velocity, 2004
HD 183263 c12.8 years5.585 AU12.5 R⊕ estimated2959 M⊕Radial Velocity, 2008

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.

The planets, compared

For a star of 5,948 K, 1.8 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.25 to 2.20 AU. 1 of its 2 known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.

The light you see left 177 years ago, around 1850.

Nearest systems to it

Also found by W. M. Keck Observatory

Sources

Privacy