K2-33

Planetary system · 454.2 light-years away

K2-33 is 454 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this M3.3 star; the first was found in 2016 by transit (K2).

Fly there in 3D

Worth knowing

K2-33 b goes round its star every 5.42 days, 16 times as often as Mercury goes round the Sun.

The star

Spectral typeM3.3
Surface temperature3,540 K
Mass0.56 solar masses
Radius1.05 solar radii
Luminosity0.15 times the Sun
Apparent magnitude15.838
Ageabout 0.0093 billion years
Distance from the Sun454.2 light-years (139.3 parsecs)
Position (J2000)RA 242.5614°, Dec -19.3194°
ConstellationScorpius

Planets (1)

PlanetYearOrbitRadiusMassFound
K2-33 b5.42 days0.0409 AU5.04 R⊕1176 M⊕Transit, 2016

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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