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Star with 2 known planets

KOI-134

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KOI-134, an F9V star, has 2 confirmed planets.

Measured

Distance
about 3,781 light-years
Star's spectral type
F9V
Confirmed planets
2

How far, from the Sun

About 3,780 light-years. To cross it:

  • Light3,780 years
  • Voyager 1's speed67.2 million years
  • Driving at 100 km/h40.8 billion years

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

How it was found

  • First planet found in 2025, by transit timing variations and transit (NASA Exoplanet Archive).

Its planets

  • KOI-134 c — 9.9 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 34 days; about 530 °C, hotter than boiling water; found in 2025 by transit timing variations.
  • KOI-134 b — 12 times Earth's width, a giant, Jupiter-sized or more; its year lasts 67 days; about 390 °C, hotter than boiling water; found in 2025 by transit.

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.