K2-268

Planetary system · 1069.1 light-years away

K2-268 is 1,069 light-years from the Sun. The NASA Exoplanet Archive lists 5 planets around this 5,106 K star; the first was found in 2018 by transit (K2).

Fly there in 3D

Worth knowing

K2-268 b goes round its star every 2.15 days, 41 times as often as Mercury goes round the Sun.

Where the archive gives only a period or only an orbit size, the other is worked out from Kepler’s third law with the star’s mass.

The star

Surface temperature5,106 K
Mass0.84 solar masses
Radius0.78 solar radii
Luminosity0.372 times the Sun
Apparent magnitude13.848
Distance from the Sun1069.1 light-years (327.8 parsecs)
Position (J2000)RA 133.7095°, Dec 11.8483°
ConstellationCancer

Planets (5)

PlanetYearOrbitRadiusMassFound
K2-268 d4.53 days0.0505 AU from Kepler’s law1.49 R⊕2.83 M⊕ estimatedTransit, 2021
K2-268 e6.13 days0.0619 AU from Kepler’s law1.33 R⊕2.33 M⊕ estimatedTransit, 2021
K2-268 f26.3 days0.163 AU from Kepler’s law2.23 R⊕5.6 M⊕ estimatedTransit, 2021
K2-268 b2.15 days0.0308 AU1.5 R⊕2.86 M⊕ estimatedTransit, 2018
K2-268 c9.33 days0.0819 AU2.69 R⊕7.7 M⊕ estimatedTransit, 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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