Kyokko — Japanese artificial satellite launched in 1978

Design and characteristics

Precise technical specifications of Kyokko are documented in contemporary mission records, but like many small satellites of its era it would have included basic subsystems such as power, attitude control, telemetry and a scientific or engineering payload. These components allowed teams to test instruments and operations in the space environment while developing experience in satellite design and mission operations.

Development and launch

The project was organized by the Institute of Space and Astronautical Science within the University of Tokyo, an early center for Japanese space science. Kyokko was successfully put into orbit on the stated launch date, marking a milestone in the institute's experimental satellite program.

Purpose and importance

Kyokko contributed to the broader objectives of Japan's space activities by providing flight heritage for instrumentation and operational methods. It is an example of university-driven missions that helped train engineers and scientists, supported space-related research, and informed subsequent national programs.

Context and legacy

Kyokko belongs to a generation of satellites that advanced Japan's independent capabilities in space science. The work of the Institute of Space and Astronautical Science later became part of national efforts when institutions merged and cooperated on larger projects. For general information on satellites and orbital missions see resources on satellite technology.

Further information

Primary historical and technical material on Kyokko can be found in archived mission summaries and institutional records; these are often maintained by the original developer institutions and research archives. For institutional context consult entries relating to ISAS and the University of Tokyo.

• Typical subsystems: power, communications, attitude control, payload
• Launched: 4 February 1978
• Developer: Institute of Space and Astronautical Science