Kepler-189

Planetary system · 1929.3 light-years away

Kepler-189 is 1,929 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,235 K star; the first was found in 2014 by transit (Kepler).

Fly there in 3D

Worth knowing

Kepler-189 b goes round its star every 10.4 days, 8 times as often as Mercury goes round the Sun.

The star

Surface temperature5,235 K
Mass0.803 solar masses
Radius0.75 solar radii
Luminosity0.3567 times the Sun
Apparent magnitude14.971
Ageabout 3.98 billion years
Distance from the Sun1929.3 light-years (591.5 parsecs)
Position (J2000)RA 287.5646°, Dec 44.3051°
ConstellationLyra

Planets (2)

PlanetYearOrbitRadiusMassFound
Kepler-189 b10.4 days0.0880 AU1.21 R⊕1.92 M⊕ estimatedTransit, 2014
Kepler-189 c20.1 days0.137 AU2.38 R⊕22.7 M⊕Transit, 2014

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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