Also known as D/1819 W1, 2003 WY25
289P/Blanpain, formerly D/1819 W1 (Blanpain) is a short-period comet with an orbital period of 5.2 years. It was discovered by Jean-Jacques Blanpain on November 28, 1819 but was considered lost until it was recovered in 2013. It was last observed in 2020.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).