K2-107

Planetary system · 2234.8 light-years away

K2-107 is 2,235 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this F9 IV star; the first was found in 2017 by transit (K2).

Fly there in 3D

Worth knowing

K2-107 b goes round its star every 3.31 days, 27 times as often as Mercury goes round the Sun.

The star

Spectral typeF9 IV
Surface temperature6,061 K
Mass1.3 solar masses
Radius1.81 solar radii
Luminosity2.914 times the Sun
Apparent magnitude13.012
Ageabout 4.25 billion years
Distance from the Sun2234.8 light-years (685.2 parsecs)
Position (J2000)RA 284.9854°, Dec -22.2934°
ConstellationSagittarius

Planets (1)

PlanetYearOrbitRadiusMassFound
K2-107 b3.31 days0.0475 AU15.98 R⊕266.98 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 6,061 K, 2.9 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.59 to 2.79 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 2,235 years ago, around 200 BC.

Nearest systems to it

Also found by K2

Sources

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