IC 4499 | |
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Observation data (J2000 epoch) | |
Class | XI |
Constellation | Apus |
Right ascension | 15h 00m 18.57s |
Declination | −82° 12′ 49.6″ |
Distance | 613 ly (188 pc) |
Apparent magnitude (V) | 9.76 |
Apparent dimensions (V) | 7.6′ × 7.6′ |
Physical characteristics | |
Metallicity | = -1.53dex |
Other designations | GCl 30 |
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.