Rüdiger Jehn, of German nationality, has a degree in mathematics. He works for the European Space Operations Centre in Darmstadt as manager of the Near-Earth Objects segment in the Space Safety Programme. He received his PhD in 1996 for his thesis "Modelling Debris Clouds". He was for many years a member of the Inter-Agency Space Debris Coordination Committee (IADC), where the major space-faring nations discuss how to mitigate the problem of space debris. Other work tasks include mission analysis for gamma ray telescopes and for solar-electric propulsion spacecraft to GEO, to the Moon and to asteroids. From 2000 to 2017 he was responsible for the mission analysis of BepiColombo, an ESA cornerstone mission to Mercury.
He is an ISU alumnus of the 1993 Huntsville class. Since 1994 he gives workshops at ISU on space debris and lectures on space situational awareness. He has published over 200 papers and reports, the “Classification of Geosynchronous Objects”, which is presented at UN COPUOS every year, being the most prominent one.