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Star with a known planet

16 Cyg B

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16 Cyg B, a G3 V star, has one confirmed planet.

Measured

Distance
about 68.9 light-years
Star's spectral type
G3 V
Confirmed planets
1

How far, from the Sun

About 68.9 light-years. To cross it:

  • Light68.9 years
  • Voyager 1's speed1.22 million years
  • Driving at 100 km/h744 million years

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

Facts

  • 16 Cyg B b has an equilibrium temperature between −50 and +50 °C.

How it was found

  • First planet found in 1996, by radial velocity (NASA Exoplanet Archive).

Its planets

  • 16 Cyg B b — 14 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 2 Earth years; about −44 °C, below freezing; found in 1996 by radial velocity.

The NASA Exoplanet Archive's page

Where this comes from

  • NASA Exoplanet Archive, Planetary Systems Composite Parameters (fetched 2026-11-02). Composite values: where a planet's size or mass was not measured, the archive estimates it from the other.
  • This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.

Every catalogue Ouranos draws is credited on the credits page.