80P/Peters-Hartley

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Total 6,336 html files since Dec. 4, 1995 Updated on April 11, 2007

Returns and Appearances Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future 2014 Nov. 10 2006 Sept. 25 80P 1998 Aug. 11 80P 1990 June 23 80P/1982 N1 1982 May 8 1974 Apr. 5 1966 Feb. 23 1958 Jan. 19 1950 Jan. 7 1941 Dec. 8 1933 Nov. 12 1925 Nov. 18 1917 Oct. 30 1909 Oct. 10 1901 Nov. 5 1893 Nov. 4 1885 Nov. 3 1877 Dec. 21 1870 Jan. 12 1862 Feb. 1 1854 Apr. 15 80P/1846 M1 1846 June 3

The apparition in 2006 is observed by Michael Jager & Gerald Rhemann. printed on Forum.sci.hr. The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996. The perihelion dates of non-observed returns from 1854 to 1974 are calculated by Kenji Muraoka.