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Ursa Major Moving Group

Ursa Major Moving Cluster,
Ursa Major Association, Collinder 285

Stellar association concentrated in Ursa Major

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Proper NamesUrsa Major Moving Group
Messier NumberNone
NGC/IC NumberNone
Other DesignationsCollinder 285
ConstellationMultiple, but centred in Ursa Major
Right Ascension10h00 to 13h00 (densest region)
Declination+20° to +60° (densest region)
Distance82 light years
25 parsecs
(core region)
Number of Stars14 core stars and c. 50 other associated stars
Brightest StarMerak
Optimum VisibilityApril (Usually visible from northern latitudes)
NotesStars associated with the Ursa Major Moving Group are to be found across the sky, especially northward of the Equator, though some are found as far south as Sculptor or Microscopium. The figures shown above refer to the more concentrated central regions of the moving group, with its heart in Ursa Major.

The stars of the Ursa Major Moving Group are spread across the sky, but the most concentrated region of the group is within the northern constellation of Ursa Major, from which it takes its name. Five of the stars of the well-known Plough (or Big Dipper) formation belong to the group, as seen in the southern part of this image. The red-orange star to the west is Dubhe or Alpha Ursae Majoris, and unlike the other bright Plough stars seen here, it does not belong to the moving group. Imagery provided by Aladin sky atlas

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