Past affiliation(s) within the IAU

• Past President of Executive Committee (1997-2000)
• Past President Elect of Executive Committee (1994-1997)
• Past Vice-President of Executive Committee (1985-1988)
• Past Vice-President of Executive Committee (1982-1985)
• Past Advisor of Executive Committee (2000-2003)
• Past Member of Division A Fundamental Astronomy
• Past Member of Division G Stars and Stellar Physics
• Past Member of Division H Interstellar Matter and Local Universe
• Past Member of Commission 27 Variable Stars (until 2015)
• Past Member of Commission 29 Stellar Spectra (until 2015)
• Past Member of Commission 30 Radial Velocities (until 2015)
• Past Member of Commission 37 Star Clusters & Associations (until 2015)
• Past Member of Commission 42 Close Binary Stars (until 2015)
• Past Member of Division IV Stars (until 2012)
• Past Member of Division V Variable Stars (until 2012)
• Past Member of Division VII Galactic System (until 2012)
• Past Member of Division IX Optical & Infrared Techniques (until 2012)
• Past Member of Special Nominating Committee (1997-2000)