|Sketch of the cluster|
|Observation data (J2000.0 epoch)|
|Right ascension||18h 31.6m|
|Distance||2.0 kly (613 Pc)|
|Apparent magnitude (V)||4.6|
|Apparent dimensions (V)||32.0′|
|Other designations||IC 4725|
Open Cluster M25 (also known as Messier Object 25 or IC 4725) is an w:open cluster in the w:constellation Sagittarius. It was discovered by w:Philippe Loys de Chéseaux in w:1745 and included in w:Charles Messier's list in w:1764.
M25 is at a distance of about 2,000 w:light-years away from w:Earth. The spatial dimension of this cluster is about 19 w:light years across. A Delta Cephei type w:variable star designated U Sagittarii is a member of this cluster.