The Kappa series represented Japan's first large post-war indigenously-developed sounding rockets. They led eventually to the Lambda and Mu solid rocket satellite launchers.

Manufacturer: ISAS.

1958 July 1 - Launch Vehicle: Kappa.

• Kappa-6tw rocket reaches 30 miles. Nation: Japan. Japanese Kappa-6tw two-stage rocket flown to 30-mile altitude over Michikawa Rocket Center, Japan. References: 17.

• Emme, Eugene M, Aeronautics and Astronautics: An American Chronology of Science and Technology in the Exploration of Space 1915-1960, NASA, 1961. Accessed at: http://www.hq.nasa.gov/office/pao/History/timeline.html.