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NGC 3220 is a spiral galaxy located in the constellation Ursa Major. It was discovered by the German-born British astronomer William Herschel on 8 April 1793.
The galaxy was also observed by the American astronomer Lewis Swift on 8 August 1890 and was subsequently listed in the Index Catalogue as IC 604.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).