Messier Index/M25

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Messier 25
M25 48 06.jpgSketch of the cluster
Observation data (J2000.0 epoch)
Right ascension 18h 31.6m
Declination −19° 15′
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.

External links