Arches Cluster: Keck I 10m (1996)

This picture was taken in 1996 using the 10 metre Keck telescope at Hawaii. It  presents the Arches Cluster, the densest known star cluster in the Milky Way. The cluster is located about 25 000 light years from Earth in the constellation of Sagattrius. The radius of the cluster is only about one light year, but it contains about 150 stars, all of which are larger and more massive than the Sun.


G. Serabyn (JPL), D. Shupe (Caltech) and D. Figer (STScI)

About the Image

NASA press release
NASA caption
Release date:9 March 2005, 20:00
Size:618 x 618 px

About the Object

Name:Arches Star Cluster
Type:Milky Way : Star : Grouping : Cluster
Distance:25000 light years
Category:Star Clusters

Image Formats

Large JPEG
64.1 KB
Screensize JPEG
88.3 KB


Position (RA):17 45 50.43
Position (Dec):-28° 49' 20.50"
Field of view:0.63 x 0.63 arcminutes
Orientation:North is 0.8° right of vertical

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