K2-31

Planetary system · 360.5 light-years away

K2-31 is 360 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G7 V star; the first was found in 2016 by transit (K2).

Fly there in 3D

Worth knowing

K2-31 b goes round its star every 30.2 hours, 70 times as often as Mercury goes round the Sun.

K2-31 is one of 2 stars in its system. The position of the other star is not catalogued, so only K2-31 and its planets are drawn.

The star

Spectral typeG7 V
Surface temperature5,280 K
Mass0.91 solar masses
Radius0.78 solar radii
Luminosity0.7757 times the Sun
Apparent magnitude10.802
Distance from the Sun360.5 light-years (110.5 parsecs)
Position (J2000)RA 245.4406°, Dec -23.5483°
ConstellationScorpius

Planets (1)

PlanetYearOrbitRadiusMassFound
K2-31 b30.2 hours0.0220 AU11.882 R⊕563.83 M⊕Transit, 2016

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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