K2-352

Planetary system · 574.2 light-years away · also TYC 1405-1421-1

K2-352 is 574 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 5,791 K star; the first was found in 2021 by transit (K2).

Fly there in 3D

Worth knowing

K2-352 b goes round its star every 3.67 days, 24 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 temperature5,791 K
Mass0.98 solar masses
Radius0.95 solar radii
Luminosity0.8645 times the Sun
Apparent magnitude11.125
Distance from the Sun574.2 light-years (176.1 parsecs)
Position (J2000)RA 140.4451°, Dec 18.4696°
ConstellationCancer

Planets (3)

PlanetYearOrbitRadiusMassFound
K2-352 b3.67 days0.0462 AU from Kepler’s law1.37 R⊕2.45 M⊕ estimatedTransit, 2021
K2-352 c8.23 days0.0793 AU from Kepler’s law1.92 R⊕4.35 M⊕ estimatedTransit, 2021
K2-352 d14.9 days0.118 AU from Kepler’s law2.23 R⊕5.6 M⊕ estimatedTransit, 2021

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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