NGC 6528

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NGC 6528
NGC 6528 hst 11664 51 R814G555B390 9453 62 R814G606B.png
The globular cluster NGC 6528
Credit: HST
Observation data (J2000 epoch)
Right ascension 18h 04m 49.61s[1]
Declination−30° 03′ 20.8″[1]
Distance25.8 kly
(7.9 kpc)[1]
Apparent magnitude (V)10.65[1]
Physical characteristics
Radius8.3' x 8.3'[2]
Metallicity = -0.11[3] dex
Other designationsGCl 84, ESO 456-48, VDBH 257[1]
See also: Globular cluster, List of globular clusters

NGC 6528 is a globular cluster in the constellation Sagittarius, and is listed in the New General Catalogue. It has an apparent magnitude of about 11 and a diameter of about 16 arcminutes, and its Shapley-Sawyer Concentration Class is V, containing stars of 16th magnitude and dimmer.[2] Dreyer described it as "pF, cS, R", meaning poor and faint, considerably small and round.

NGC 6528 is located southwest of NGC 6522, another globular cluster. Both are located in Baade's Window, a relatively clear area in the galactic equator.

The globular cluster was discovered in 1784 by the astronomer William Herschel with his 18-inch telescopes.



  1. ^ a b c d e "NGC 6528". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 January 2017.
  2. ^ a b "NGC 6528". Retrieved 8 January 2016.
  3. ^ "A Galactic Globular Clusters Database: NGC 6528". Retrieved 8 January 2017.