NGC 6231 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.
Apparent magnitude (V): 2.6
Declination: −41° 48′
Constellation: Scorpius
Distance: 5,600±400 ly (1,700±130 parsec)
Estimated age: 2–7 million years
110 f/6 ED scope QHY268c OSC - 200min in 4min subs captured 7/6/25 processed SIRIL and PS