|Observation data (w:J2000 epoch)|
|Right ascension||20h 06m 04.75s|
|Declination||-21° 55′ 16.2″|
|Distance||67.5 kly (20.7 kpc)|
|Apparent magnitude (V)||+9.18|
|Apparent dimensions (V)||6′.8|
|Mass||kg ( M)|
|Other designations||M75, NGC 6864, GCl 116|
Messier 75 (also known as M75 or NGC 6864) is a w:globular cluster in the w:constellation Sagittarius. It was discovered by w:Pierre Méchain in w:1780 and included in w:Charles Messier's catalog of w:comet-like objects that same year.
M75 is at a distance of about 67,500 w:light years away from w:Earth and its apparent size on the sky translates to a true radius of some 67 w:light years. It is classified as class I, meaning it is one of the more densely concentrated globular clusters known. The w:absolute magnitude of M75 is about -8.5 or some 180,000 more luminous than the w:Sun.