Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  IC 4628  ·  NGC 6231  ·  NGC 6242  ·  NGC 6268  ·  The star ζ1 Sco  ·  The star ζ2 Sco
NGC6231 in Scorpius, Brendan Studds
NGC6231 in Scorpius
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NGC6231 in Scorpius

NGC6231 in Scorpius, Brendan Studds
NGC6231 in Scorpius
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NGC6231 in Scorpius

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Description

NGC 6231 (also known as Caldwell 76) is an open cluster in the southern sky located half a degrees north of Zeta Scorpii. NGC 6231 is part of a swath of young, bluish stars in the constellation Scorpius known as the Scorpius OB1 association.

This cluster is estimated about 2–7 million years old, and is approaching the Solar System at 22 km/s. The cluster and association lie in the neighboring Sagittarius Arm of the Milky Way. Zeta1 Scorpii (spectral type O8 and magnitude 4.71) is the brightest star in the association, and one of the most radiant stars known in the galaxy.

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NGC6231 in Scorpius, Brendan Studds

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Southern Hemisphere Astro