K2-185

Planetary system · 875.3 light-years away

K2-185 is 875 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,788 K star; the first was found in 2018 by transit (K2).

Fly there in 3D

Worth knowing

K2-185 b goes round its star every 10.6 days, 8 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 temperature5,788 K
Mass0.96 solar masses
Radius0.94 solar radii
Luminosity0.8123 times the Sun
Apparent magnitude12.235
Distance from the Sun875.3 light-years (268.4 parsecs)
Position (J2000)RA 130.2597°, Dec 14.6902°
ConstellationCancer

Planets (2)

PlanetYearOrbitRadiusMassFound
K2-185 b10.6 days0.0933 AU from Kepler’s law1.15 R⊕1.6 M⊕ estimatedTransit, 2018
K2-185 c52.7 days0.271 AU from Kepler’s law2.39 R⊕6.3 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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