XO-5

Planetary system · 900.9 light-years away

XO-5 is 901 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G8 V star; the first was found in 2008 by transit (XO).

Fly there in 3D

Worth knowing

XO-5 b goes round its star every 4.19 days, 21 times as often as Mercury goes round the Sun.

The star

Spectral typeG8 V
Surface temperature5,430 K
Mass1.04 solar masses
Radius1.13 solar radii
Luminosity0.871 times the Sun
Apparent magnitude12.198
Ageabout 8.5 billion years
Distance from the Sun900.9 light-years (276.2 parsecs)
Position (J2000)RA 116.7164°, Dec 39.0945°
ConstellationLynx

Planets (1)

PlanetYearOrbitRadiusMassFound
XO-5 b4.19 days0.0515 AU12.78 R⊕378.2 M⊕Transit, 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 5,430 K, 0.87 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.91 to 1.61 AU. None of its 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 901 years ago, around 1130.

Nearest systems to it

Also found by XO

Sources

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