420P/Hill

Japanese version
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 Updated on April 29, 2021

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* Returns and Appearances

!Discovered *Appeared -Not observed #Appeared before discovery +Not observed before discovery .Returns in the future
* 420P/2021 E1
2022 May 22
! 420P/2009 Q1
2009 July 4
+
1996 Sept. 16

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