In what year was 13P/Olbers discovered: 1811, 1812, 1815 or 1823?

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13P/Olbers is a periodic comet with an orbital period of 69 years, fitting the classical definition of a Halley-type comet (period between 20 and 200 years).

Learn more on Codexery: 13P/Olbers in Named Comets

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