(21617) Johnhagen = 1999 JO119
John Thomas Hagen (b. 1988) was awarded second place in the 2005
Intel International Science and Engineering Fair for his space science
project. He attends the Ayersville High School, Defiance, Ohio, U.S.A.
A complete set of naming citations of the numbered minor planets is available in the Dictionary of Minor Planet Names, edited by Lutz Schmadel.