Xi Scorpii (ξ Sco) is part of a quintuple star system in the constellation Scorpius. It was assigned this designation by Bayer, although Ptolemy had catalogued the star in Libra. Flamsteed assigned it the designation 51 Librae, but this has fallen out of use since modern constellation boundaries assign the star to Scorpius.
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This article is an automated import of the Wikipedia article "Xi Scorpii", available at https://en.wikipedia.org/wiki/Xi_Scorpii . Text is licensed under CC BY-SA 4.0.