39P/Oterma

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Updated on July 19, 2019

Returns and Appearances Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future 39P 2023 July 11 39P/2001 P3 2002 Dec. 22 1983 June 18 39P 1958 June 10 39P 1950 July 16 39P/1943 G1 1942 Aug. 21

The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996. The perihelion date in 1983 is printed on IAUC 7689.