84P/Giclas

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Updated on October 31, 2021

Returns and Appearances Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future 2027 Feb. 12 84P 2020 June 3 84P 2013 July 23 84P 2006 Aug. 7 84P 1999 Aug. 25 84P 1992 Sept.13 84P/1985 M1 1985 Oct. 1 84P/1978 R2 1978 Nov. 21 1972 Mar. 14 1965 June 30 1958 Sept.30 1951 Dec. 31 1945 Apr. 7 1938 July 13 84P/1931 R1 1931 Nov. 18

The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996. The perihelion dates of non-observed returns from 1938 to 1972 are calculated using the Minor Planet & Comet Ephemeris Service. The appearance in 1931 is printed on IAUC 6168.