Messier Index/M25

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Messier 25
Sketch of the cluster
Observation data (J2000.0 epoch)
Right ascension18h 31.6m
Declination−19° 15′
Distance2.0 kly (613 Pc)
Apparent magnitude (V)4.6
Apparent dimensions (V)32.0′
Other designationsIC 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.

External links