273P/Pons–Gambart, also called Comet Pons-Gambart, is a periodic comet in a retrograde orbit first discovered on 21 June 1827 by Jean-Louis Pons and Jean-Félix Adolphe Gambart. It has a 186-year orbit and it fits the classical definition of a Halley-type comet (20 years < period < 200 years). Its last perihelion was in December 2012 and will next come to perihelion around August 2191.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).