57P/du Toit-Neujmin-Delporte

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Updated on August 11, 2016

Returns and Appearances Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future 2021 Oct. 17 57P 2015 May 22 57P 2008 Dec. 25 57P 2002 July 31 57P 1996 Mar. 5 57P 1989 Oct. 18 57P 1983 June 1 1977 Jan. 28 57P/1970 N2 1970 Oct. 7 1964 July 13 1958 Aug. 14 1952 Oct. 2 1947 Feb. 20 57P/1941 O1 1941 July 21

The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996. The perihelion dates of non-observed returns from 1947 to 1977 are calculated using the Minor Planet & Comet Ephemeris Service.