Nu1 Sagittarii

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Nu1 Sagittarii (ν1 Sagittarii, abbreviated Nu1 Sgr, ν1 Sgr) is a triple star system about 1,100 light-years from Earth. The two resolved components are designated Nu1 Sagittarii A (officially named Ainalrami , the traditional name for the system), and B. Component A is itself a spectroscopic binary.

Excerpt from the Wikipedia article “Nu1 Sagittarii”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg), CC BY 3.0, via Wikimedia Commons.