K2-261

Planetary system · 695.6 light-years away · also TYC 255-257-1

K2-261 is 696 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G7 IV/V star; the first was found in 2018 by transit (K2).

Fly there in 3D

Worth knowing

K2-261 b goes round its star every 11.6 days, 8 times as often as Mercury goes round the Sun.

The star

Spectral typeG7 IV/V
Surface temperature5,490 K
Mass1.107 solar masses
Radius1.663 solar radii
Luminosity2.259 times the Sun
Apparent magnitude10.612
Ageabout 8.8 billion years
Distance from the Sun695.6 light-years (213.3 parsecs)
Position (J2000)RA 163.0323°, Dec 0.4932°
ConstellationLeo

Planets (1)

PlanetYearOrbitRadiusMassFound
K2-261 b11.6 days0.109 AU9.2698 R⊕68.969 M⊕Transit, 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.

Sources

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