A U.S. space domain awareness payload hosted on Japan's Quasi-Zenith Satellite 6 successfully launched on a Japanese H-3 launch vehicle from the Yoshinobu Launch Complex at the Japan Aerospace Exploration Agency’s Tanegashima Space Center in Japan on February 2. This is the first bilateral U.S. Japan cooperative space effort focused on national security, and the first of two launches as part of the JAXA Quasi-Zenith Satellite System Hosted Payload program.The satellite will be operated by Space Operations Command’s Mission Delta 2, which conducts Space Domain Awareness operations to identify, characterize, and exploit opportunities and mitigate vulnerabilities in the national security space terrain on behalf of the U.S. Space Force and U.S. Space Command. The satellite will deliver near real time data to the Space Surveillance Network bolstering the U.S. Department of Defense understanding of the Geosynchronous Orbit regime above the Indo-Pacific region.
The QZSS-HP program encompasses the integration, launch and operations of two U.S. payloads hosted on Japanese satellites. In preparation for launch, USSF and Massachusetts Institute of Technology Lincoln Laboratory teams have worked side-by-side with the NSPS and Mitsubishi Electric Corporation teams in Japan over the past two years to integrate and test the first hosted payload alongside its Japanese QZS-6 host.
The strategic partnership between the USSF and Japan's National Space Policy Secretariat originated through a December 2020 international agreement to jointly execute the Quasi-Zenith Satellite System-Hosted Payload program. The mission’s second payload aboard QZS-7 is on track for launch in early FY2026.