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physical object > natural object > celestial body > collection of stars > association > OB association

OB association comparison table

Subject	is part of	is an instance of	has synonym	has definition	has distance
Carina OB 2	Carina	OB association		A rich association of OB stars near η Carinae.
h and Chi Persei	Perseus	naked eye object	double cluster in Perseus	A double stellar association. It contains many young O and B stars and also many M supergiants.	2 kpc
Perseus OB2		OB association		A young association of OB stars.	350 pc
Scorpius OB1	Scorpius	OB association		An extremely young association of OB stars.	2 kpc

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