Akebono (known as EXOS-D before launch) is a satellite to study aurora and Earth's magnetosphere environment. It was developed by Institute of Space and Astronautical Science and launched by M-3SII rocket on February 22, 1989.
As of March 2009, it is still operational after 20 years from launch.
- 松岡彩子 (2009-03-25). "打ち上げ20周年を迎えた 磁気圏観測衛星「あけぼの」の成果と現状" (in Japanese). Retrieved 2009-03-28.
 See also
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