IC 4499

IC 4499 is a loose globular cluster in the constellation Apus. It is located in the medium-far galactic halo.^[4] Its apparent magnitude is 9.76,^[1] and was thought to be 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.^[4] However, this was contradicted in 2011 by results that yielded a much older age of 12 billion years.^[5]

IC 4499
IC 4499, as seen through the Hubble Space Telescope
Observation data (J2000 epoch)
Class	XI[1]
Constellation	Apus
Right ascension	15h 00m 18.57s[2]
Declination	−82° 12′ 49.6″[2]
Distance	50,000 ly (15,000 pc)[1]
Apparent magnitude (V)	9.76[3]
Apparent dimensions (V)	7.6′ × 7.6′[1]
Physical characteristics
Metallicity	${\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}$ = −1.53[3] dex
Other designations	GCl 30[2]
See also: Globular cluster, List of globular clusters

As is typical for very old globular clusters, IC 4499 contains two generations of stars.^[6]