OGLE-2017-BLG-1691L

Measured

Distance

about 23,777 light-years

Confirmed planets

1

How far, from the Sun

About 23,800 light-years. To cross it:

• Light23,800 years
• Voyager 1's speed422 million years
• Driving at 100 km/h257 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 2022, by microlensing (NASA Exoplanet Archive).

Its planets

• OGLE-2017-BLG-1691L b — 3.9 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; found in 2022 by microlensing.

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.