K2-165

Planetary system · 439.0 light-years away · also TYC 281-875-1

K2-165 is 439 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 5,185 K star; the first was found in 2018 by transit (K2).

Fly there in 3D

Worth knowing

K2-165 b goes round its star every 2.35 days, 37 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 temperature5,185 K
Mass0.834847 solar masses
Radius0.803827 solar radii
Luminosity0.4268 times the Sun
Apparent magnitude11.332
Distance from the Sun439.0 light-years (134.6 parsecs)
Position (J2000)RA 184.9005°, Dec 0.9683°
ConstellationVirgo

Planets (3)

PlanetYearOrbitRadiusMassFound
K2-165 b2.35 days0.0326 AU from Kepler’s law1.2744 R⊕2.17 M⊕ estimatedTransit, 2018
K2-165 c4.38 days0.0493 AU from Kepler’s law1.5541 R⊕3.03 M⊕ estimatedTransit, 2018
K2-165 d14.1 days0.108 AU from Kepler’s law2.6481 R⊕7.5 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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