Qatar-4

Planetary system · 1073.2 light-years away

Qatar-4 is 1,073 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this K1 V star; the first was found in 2017 by transit (Qatar).

Fly there in 3D

Worth knowing

Qatar-4 b goes round its star every 43.3 hours, 49 times as often as Mercury goes round the Sun.

The star

Spectral typeK1 V
Surface temperature5,215 K
Mass0.896 solar masses
Radius0.849 solar radii
Luminosity0.481 times the Sun
Apparent magnitude13.574
Ageabout 0.17 billion years
Distance from the Sun1073.2 light-years (329.0 parsecs)
Position (J2000)RA 4.8593°, Dec 44.0276°
ConstellationAndromeda

Planets (1)

PlanetYearOrbitRadiusMassFound
Qatar-4 b43.3 hours0.0280 AU12.722 R⊕1938.8 M⊕Transit, 2017

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 5,215 K, 0.48 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.68 to 1.22 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 1,073 years ago, around AD 950.

Nearest systems to it

Also found by Qatar

Sources

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