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Upper Scorpius Association

Antares Cluster, Collinder 302

Proper NamesUpper Scorpius Association, Antares Cluster
Messier NumberNone
NGC/IC NumberNone
Other DesignationsCollinder 302
Right Ascension16h 26m 6s
Declination-26° 14' 0"
Distance420 light years
129 parsecs
MagnitudeApparent: +1.00
Absolute: -5.69
DiameterApparent: 8° 20'
Actual: c. 60 light years
Optimum VisibilityJune

The Upper Scorpius Association is a grouping of several hundred stars clustered around Antares (the bright red-orange star near the centre of this image), and so sometimes known as the Antares Cluster. It forms part of the more extensive Scorpius-Centaurus Association, the nearest OB association (association of O-type and B-type stars) to the Sun at an estimated distance of more than four hundred light years. Imagery provided by Aladin sky atlas