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Open star cluster

The Coma Star Cluster

Also Melotte 111 · Collinder 256

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A sparse open cluster of stars in the constellation Coma Berenices.

Measured

Distance
283 light-years
Size
about 36 light-years across (approximate)
Constellation
Coma Berenices
Position (J2000)
RA 12h 22m 30s, Dec +25.85°

How far, from the Sun

283 light-years. To cross it:

  • Light283 years
  • Voyager 1's speed5.03 million years
  • Driving at 100 km/h3.05 billion years

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

Facts

  • Its stars spread over roughly 8 degrees of sky.
  • It is one of the nearest open clusters to the Sun.
  • The name Coma Berenices means Berenice's Hair, after Queen Berenice II of Egypt.

Where this comes from

  • van Leeuwen 2009, Hipparcos (86.7 pc)

Every catalogue Ouranos draws is credited on the credits page.