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Star with planets

Kepler-186

Also KOI-571 · KIC 8120608

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Kepler-186 — Artist's impression of Kepler-186f
Artist's impression, not a photograph.Artist's impression of Kepler-186f. Credit: NASA/Ames/SETI Institute/JPL-Caltech. Licence: Public domain (NASA). Source

A red dwarf with five known planets, including the first Earth-sized planet found in a habitable zone.

Measured

Distance
579 light-years
Constellation
Cygnus
Position (J2000)
RA 19h 54m 37s, Dec +43.95°

How far, from the Sun

579 light-years. To cross it:

  • Light579 years
  • Voyager 1's speed10.3 million years
  • Driving at 100 km/h6.25 billion years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Facts

  • Kepler-186f is about 1.17 times Earth's radius and orbits every 130 days.
  • Its star is a red dwarf with about 54% of the Sun's mass.

How it was found

  • Kepler-186f, announced in 2014, was the first Earth-sized planet found in another star's habitable zone.

Where this comes from

  • Gaia DR3 parallax 5.6336 ± 0.0169 mas, Gaia DR3 2079000330051813504 (Gaia Collaboration 2023, A&A 674, A1)

Every catalogue Ouranos draws is credited on the credits page.