Kepler-394

Planetary system · 3453.1 light-years away

Kepler-394 is 3,453 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 6,402 K star; the first was found in 2014 by transit (Kepler).

Fly there in 3D

Worth knowing

Kepler-394 d goes round its star every 5.61 days, 16 times as often as Mercury goes round the Sun.

The star

Surface temperature6,402 K
Mass0.87 solar masses
Radius1.132 solar radii
Luminosity1.131 times the Sun
Apparent magnitude14.948
Ageabout 0.25 billion years
Distance from the Sun3453.1 light-years (1058.7 parsecs)
Position (J2000)RA 296.3020°, Dec 50.6723°
ConstellationCygnus

Planets (3)

PlanetYearOrbitRadiusMassFound
Kepler-394 d5.61 days0.0590 AU1.5007 R⊕2.86 M⊕ estimatedTransit, 2021
Kepler-394 b8.01 days0.0830 AU1.6 R⊕3.19 M⊕ estimatedTransit, 2014
Kepler-394 c12.1 days0.110 AU1.66 R⊕3.39 M⊕ estimatedTransit, 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.

The planets, compared

For a star of 6,402 K, 1.1 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.97 to 1.69 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.

The light you see left 3,453 years ago, around 1400 BC.

Nearest systems to it

Also found by Kepler

Sources

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