Supriya Ghosh (Editor)

IC 4499

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Class
  
XI

Right ascension
  
15 00 18.57

Distance
  
613 ly (188 pc)

Constellation
  
Apus

Declination
  
−82° 12′ 49.6″

Apparent magnitude (V)
  
9.76

IC 4499

IC 4499 is a loose globular cluster in the constellation Apus. It is located in the medium-far galactic halo. Its apparent magnitude is 9.76, and was thought to unusual because it appears to be 3-4 billion years younger than most other globular clusters in the Milky Way, as determined by metallicity measurements in 1995. However, this was contradicted in 2011 by results that yielded a much older age of 12 billion years.

References

IC 4499 Wikipedia