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Star with planets

Kepler-22

Also KOI-87

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A Sun-like star whose planet Kepler-22 b was the first Kepler found in its star's habitable zone.

Measured

Distance
644 light-years
Constellation
Cygnus
Position (J2000)
RA 19h 16m 52s, Dec +47.88°

How far, from the Sun

644 light-years. To cross it:

  • Light644 years
  • Voyager 1's speed11.4 million years
  • Driving at 100 km/h6.95 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-22 b is about 2.1 times Earth's radius (NASA Exoplanet Archive, as of October 2026).
  • Its distance comes from a Gaia parallax: the tiny yearly shift in its position as the Earth circles the Sun.

Where this comes from

  • Gaia DR3 parallax 5.0627 ± 0.0110 mas, Gaia DR3 2127941757262806656 (Gaia Collaboration 2023, A&A 674, A1)
  • This research has made use of the SIMBAD database, CDS, Strasbourg, France (Wenger et al. 2000, A&AS 143, 9).
  • This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier).

Every catalogue Ouranos draws is credited on the credits page.