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Open star cluster

The Muscleman Cluster

Also Stock 2

Open in OuranosCompare its size

An open cluster in Cassiopeia.

Measured

Distance
1,207 light-years
Size
about 28 light-years across (approximate)
Constellation
Cassiopeia
Position (J2000)
RA 2h 15m 24s, Dec +59.58°

How far, from the Sun

1,210 light-years. To cross it:

  • Light1,210 years
  • Voyager 1's speed21.4 million years
  • Driving at 100 km/h13 billion years

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

Facts

  • It lies near the Double Cluster on the sky but at a fraction of its distance.
  • Gaia picks out about 3,011 member stars (Hunt & Reffert 2023).

Where this comes from

  • Hunt & Reffert 2023, A&A 673, A114: Gaia DR3 cluster distance 370.2 pc (16th–84th percentile 370.1–370.3 pc)
  • 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.