Discovered
Appeared
Not observed
Appeared before discovery
Not observed before discovery
Returns in the future
2033 Feb. 2
2024 Sept. 14
2016 Mar. 28
2007 Sept.22
1999 Apr. 5
1990 Dec. 25
1982 Dec. 21
1974 Dec. 23
1967 Apr. 19
1960 Mar. 15
1953 Feb. 13
1946 Jan. 8
1938 Nov. 29
1931 Dec. 18
1925 May 18
D/1918 W1
1918 Sept.30
The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996.
The perihelion dates since 1925 are calculated by Kazuo Kinoshita (http://www9.ocn.ne.jp/~comet/pcmt/j18w1.htm).
Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.