18D/Perrine-Mrkos

Japanese version
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Updated on September 19, 2009

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* Returns and Appearances

!Discovered *Appeared -Not observed #Appeared before discovery +Not observed before discovery .Returns in the future
.
2017 Feb. 26
-
2009 Apr. 17
-
2002 Sept.10
-
1995 Dec. 6
-
1989 Feb. 28
-
1982 May 16
-
1975 Aug. 2
* 18D
1968 Nov. 1
* 18D
1962 Feb. 12
* 18D/1955 U1
1955 Sept.27
-
1949 Apr. 5
-
1942 Sept.22
-
1936 Feb. 24
-
1929 July 26
-
1922 Dec. 23
-
1916 May 22
* 18D/1909 P1
1909 Nov. 1
-
1903 Apr. 22
! 18D/1896 X1
1896 Nov. 25

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The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996.
The perihelion dates of non-observed returns from 1903 to 1989 are calculated using the Minor Planet & Comet Ephemeris Service.

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Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.