(21686) Koschny = 1999 RB36 Discovered 1999 Sep. 11 by A. Knöfelat Drebach. Aerospace engineer Detlef Koschny (b.1962) is a member of the Rosetta Project Scientists' Team of the European Space Research and TechnologyCenter of the European Space Agency. He is also an active amateurastronomer and works on the subject of groundbased observations of meteors withintensified video cameras. |