Discovered
Appeared
Not observed
Appeared before discovery
Not observed before discovery
Returns in the future
2038 May 4
1976 Jan. 3
20D/1913 S1
1913 Nov. 26
20D/1852 O1
1852 Oct. 13
The perihelion dates in the past appearances are printed on Catalog of Cometary Orbits 1996.
The perihelion date in 1976 is calculated using the Minor Planet & Comet Ephemeris Service.
Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.