Past affiliation(s) within the IAU

• Past President of Division V Variable Stars (1994-1997)
• Past President of Commission 42 Close Binary Stars (1991-1994)
• Past President of Commission 44 Space & High Energy Astrophysics (1985-1988)
• Past Vice-President of Commission 42 Close Binary Stars (1988-1991)
• Past Vice-President of Commission 44 Space & High Energy Astrophysics (1982-1985)
• Past Vice-Chair of Inter-Division IX-X-XI WG Astronomy from the Moon (2008-2009)
• Past Advisor of Division V Variable Stars (1997-2000)
• Past Organizing Committee Member of Division V Variable Stars (1997-2000)
• Past Organizing Committee Member of Division V Variable Stars (1994-1997)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1994-1997)
• Past Organizing Committee Member of Commission 44 Space & High Energy Astrophysics (1988-1991)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1985-1988)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1982-1985)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1979-1982)
• Past Organizing Committee Member of Commission 44 Space & High Energy Astrophysics (1979-1982)
• Past Organizing Committee Member of Commission 42 Close Binary Stars (1976-1979)
• Past Organizing Committee Member of Commission 44 Space & High Energy Astrophysics (1976-1979)
• Past Member of Division D High Energy Phenomena and Fundamental Physics (until 2017)
• Past Member of Division G Stars and Stellar Physics (until 2017)
• Past Member of Division H Interstellar Matter and Local Universe (until 2017)
• Past Member of Commission 34 Interstellar Matter (until 2015)
• Past Member of Commission 36 Theory of Stellar Atmospheres (until 2015)
• Past Member of Commission 42 Close Binary Stars (until 2015)
• Past Member of Commission 44 Space & High Energy Astrophysics (until 2015)
• Past Member of Division IV Stars (until 2012)
• Past Member of Division V Variable Stars (until 2012)
• Past Member of Division VI Interstellar Matter (until 2012)
• Past Member of Division XI Space & High Energy Astrophysics (until 2012)