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Messier 13
Messier 13 Hercules Cluster
Credit: NASA, ESA

M13 (NGC 6205) - Hercules Cluster

Messier 13 (NGC 6205), also known as the Hercules Cluster, is a globular cluster located in the constellation Hercules, in the Galactic Center of the Milky Way Galaxy in the Local Group of galaxies. M13 is 22,000 light years away from Earth.

M13 is best viewed during mid-summer, is magnitude 5.8, and can be viewed with naked eye (barely). M13 is 20' in apparent size. For reference, the full moon is 30' (arc minutes) in size.

      1. Name:
      2. Hercules Cluster
      1. Type:
      2. globular cluster
      1. NGC or IC:
      2. NGC 6205
      1. Magnitude:
      2. 5.8
      1. Viewing:
      2. naked eye (barely)
      1. Size:
      2. 20'
      1. Distance (light years):
      2. 22,000 LY
      1. RA:
      2. 16h 41.7m
      1. Dec:
      2. 36 28'
      1. Season:
      2. mid-summer
      1. Milky Way location:
      2. Galactic Center
      1. Galaxy group:
      2. Local Group
      1. Contains:
      2. 300,000 stars

    * The naked eye can see up to magnitude 8 objects under ideal dark sky conditions.