- 2005/04 - 現在 Institute of Space and Astronautical Science
- 2012/03 - 2018/12 Korea Astronomy and Space Science Institute(KASI) Distinguished fellow
- 2012/04 - 2015/12 Institute of Astronomy and Astrophysics, academia Sinica Distibguished fellow
- 2008/04 - 2012/03 Seoul National University Department of Astronomy Visiting fellow
- 1996/04 - 2005/03 宇宙科学研究所 教授
- 2001/04 - 2003/09 Institute of Space and Astronautical Science Deputy Director General
- 2001 - Professor, Ditector of Project Coordination, ISAS
- 1988/03 - 1996/03 School of Science, Nagoya University Department of physics Professor
- 1996 - Professor, The Institute of Space and Astronautical
- 1978/05 - 1988/02 School of Science, Nagoya University Department of physics Associate Professor
- 1988 - Professor, Faculty of Science, Nagoya Unv.
- 1969/04 - 1978/04 School of Science, Nagoya University Department of physics Research Associate
- 1978 - Assistant Professor, Faculty of Science, Nagoya Unv.
- 1969 - Research Associate, Faculty of Science, Nagoya Unv.
- Science
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日本天文学会
, The Physical Society of Japan
, Astronomical Society of Japan
, International Astronomical Union