K2-247

Planetary system · 841.9 light-years away

K2-247 is 842 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 4,667 K star; the first was found in 2018 by transit (K2).

Fly there in 3D

Worth knowing

K2-247 b goes round its star every 2.25 days, 39 times as often as Mercury goes round the Sun.

The star

Surface temperature4,667 K
Mass0.74 solar masses
Radius0.69 solar radii
Luminosity0.1314 times the Sun
Apparent magnitude14.857
Distance from the Sun841.9 light-years (258.1 parsecs)
Position (J2000)RA 188.8935°, Dec -10.0693°
ConstellationVirgo

Planets (2)

PlanetYearOrbitRadiusMassFound
K2-247 b2.25 days0.0304 AU2.12 R⊕5.14 M⊕ estimatedTransit, 2018
K2-247 c6.49 days0.0615 AU2.19 R⊕5.43 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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