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Messier Index/M25
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Messier 25 250pxSketch of the cluster J2000.0 IV,3,r 18h 31.6m −19° 15′ 2.0 kly 613 Pc 4.6 32.0′ 10 90 million years 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
Messier 25, SEDS Messier pages