Birth: May 13, 1940, Bad Urach, Germany Citizenship: German Marital Status: Married, three children Work Address: Landessternwarte Koenigstuhl D-69117 Heidelberg Germany e-mail: iappenze@lsw.uni-heidelberg.de
1959 - 1961 Physics, University of Tuebingen, Germany 1961 - 1966 Physics and Astronomy, University of Goettingen, Germany Febr. 1966 Dr. rer. nat., University of Goettingen June 1970 Habilitation, University of Goettingen
1964 - 1965 University of Chicago, Yerkes Observatory Technical Assistant 1966 - 1967 University of Chicago, Yerkes Observatory Research Associate 1967 - 1975 University of Goettingen Wiss.Assistent (1967-1970) Akad. Rat (1970 - 1975) Privatdozent (1970 - 1974) Apl. Prof. (1974 - 1975) 1972 University of Tokyo, Japan , JSPS Visiting Prof. (4 months) 1975 - 2005 University of Heidelberg Professor of Astronomy and Director, Landessternwarte Heidelberg-Koenigstuhl 1982/1983 University of Arizona, Tucson, USA, Visiting Scientist (4 months) 1998 - 2000 Max-Planck Institute for Astronomy, Acting Director Heidelberg, Germany 2002 Institut d'Astophysique, Paris Prix Gay-Lussac-Humboldt Awardee since 2005: Professor emeritus
1985 - 1986 Dean of the Faculty of Physics and Astronomy at Heidelberg University 1994 - 1997 General Secretary of the International Astronomical Union 2000 - 2003 Chairman of the Council of the University of Education (PH) Heidelberg PI or CO of various large national and international instrumentation and research projects.
Max Planck Institute for Astronomy (External Member since 1979) Heidelberg Academy of Sciences (since 2004) Astronomische Gesellschaft, European Astronomical Society (Founding Member), International Astronomical Union
Naming of Minor Planet 2373 "Immo" Prix Gay Lussac/Humboldt 2001 Karl Schwarzschild Medal of the Astronomische Gesellschaft 2015