K2-282

Planetary system · 1618.7 light-years away

K2-282 is 1,619 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,499 K star; the first was found in 2018 by transit (K2).

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Worth knowing

EPIC 220554210 c goes round its star every 16.9 hours, 125 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 temperature5,499 K
Mass0.94 solar masses
Radius1 solar radii
Luminosity0.6101 times the Sun
Apparent magnitude14.21
Distance from the Sun1618.7 light-years (496.3 parsecs)
Position (J2000)RA 13.4322°, Dec 7.9953°
ConstellationPisces

Planets (2)

PlanetYearOrbitRadiusMassFound
EPIC 220554210 c16.9 hours0.0152 AU from Kepler’s law1.6 R⊕3.19 M⊕ estimatedTransit, 2019
K2-282 b4.17 days0.0499 AU2.5 R⊕6.8 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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