Andromeda
Log inJoin

Stellar stream

Acheron

Open in Ouranos

A river of stars — what is left of a cluster or small galaxy the Milky Way pulled apart.

Measured

Distance
about 11,687 light-years

How far, from the Sun

About 11,700 light-years. To cross it:

  • Light11,700 years
  • Voyager 1's speed208 million years
  • Driving at 100 km/h126 billion years

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

Facts

  • About 7,700 light-years long, 12,000 light-years away on average.
  • Traced by Grillmair2009.

Where this comes from

  • Stellar streams: galstreams (Mateu 2023, MNRAS 520, 5225), Copyright (c) 2017, Cecilia Mateu, BSD 3-Clause licence, and the papers each track comes from.

Every catalogue Ouranos draws is credited on the credits page.