Alt. Designations: NGC 6637
Object Type: Global Cluster
Constellation: Sagittarius
Distance: 29.7 kly
Right Ascension: 18h 31m 23.2s
Declination: -32° 20´ 51"
Visual Magnitude: 7.7
Apparent Dimension: 7.1´ Dia.
Best Month To View: Jun

Sagittarius is a constellation that literally swarms with interesting deep-sky objects. One of these is a globular cluster known as M69. It is one of the smaller and fainter globular clusters in the Messier catalog. In fact, Messier originally missed this object when he looked for it in 1764 but later found it with a better telescope in 1780. This cluster is believed to be about 55 light-years in diameter and is located some 27,000 light-years from Earth. It can just barely be seen on a dark night with a pair of 7x50 or 10x50 binoculars, as long the observer is not too far north.