CoRoT-20

Planetary system · 2753.0 light-years away

CoRoT-20 is 2,753 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G2 V star; the first was found in 2011 by transit (CoRoT).

Fly there in 3D

Worth knowing

CoRoT-20 b goes round its star every 9.24 days, 10 times as often as Mercury goes round the Sun.

The star

Spectral typeG2 V
Surface temperature5,880 K
Mass1.14 solar masses
Radius1.02 solar radii
Luminosity1.479 times the Sun
Apparent magnitude14.63
Ageabout 0.1 billion years
Distance from the Sun2753.0 light-years (844.1 parsecs)
Position (J2000)RA 97.7204°, Dec 0.2269°
ConstellationMonoceros

Planets (2)

PlanetYearOrbitRadiusMassFound
CoRoT-20 b9.24 days0.0900 AU9.4156 R⊕1366.7 M⊕Transit, 2011
CoRoT-20 c4.6 years2.900 AU12.2 R⊕ estimated5403.1 M⊕ minimumRadial Velocity, 2018

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 5,880 K, 1.5 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.15 to 2.02 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 2,753 years ago, around 700 BC.

Nearest systems to it

Also found by CoRoT

Sources

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