US Space Force and Japan launch new satellites to boost surveillance across the Pacific and further beyond

The United States Space Force and Japan have successfully completed a satellite launch aimed at enhancing surveillance capabilities in the Pacific region and beyond. The mission, known as Mission Delta 2, saw the deployment of an American payload aboard Japan's Quasi-Zenith Satellite 7 (QZS-7), launched from Tanegashima Space Center. This marks the second and final launch under the Quasi-Zenith Satellite System-Hosted Payload program, which is a bilateral U.S.-Japan cooperative effort focused on national security.

The U.S. payload will be operated by the Space Combat Power's Mission Delta 2, a unit responsible for identifying and tracking objects in contested orbital terrain. Based at Peterson Space Force Base in Colorado, Mission Delta 2 maintains a presence at 11 locations worldwide. Once fully operational, the payload is expected to provide near-real-time data to the Space Surveillance Network, improving awareness of the geosynchronous orbit above the Indo-Pacific.

Both the U.S. and Japanese components of the program were designed and built by MIT Lincoln Laboratory, while the Japanese host satellites were developed by Mitsubishi Electric Corporation. The agreement to jointly execute the hosted-payload program was established in December 2020, showcasing the maturation of the U.S.-Japan alliance through shared access to orbital infrastructure.

Col. Bryon McClain, Space Force portfolio acquisition executive for Space Combat Power, emphasized the importance of the successful launch, stating that it underscores the strength and rapid modernization of the U.S.-Japan alliance. He added that merging capabilities in satellite communications aids in maintaining security in a contested space domain.

Mission Delta 2's deputy commander, Col. Gina Peterson, highlighted the program's role in addressing the threat posed by peer adversaries in space. Brig. Gen. Brian Denaro, commander of U.S. Space Forces Pacific, emphasized the alliance's significance as one of the country's greatest strategic advantages in the region. He noted that the program exemplifies how the two militaries can build interoperability from design through launch.

While the governments have not disclosed the cost of the two-satellite program or a timeline for full operational status of the second payload, Space Force officials view the launch primarily as an alliance milestone rather than a transformative technical breakthrough. The real test for the program will be its ability to produce usable, timely data that enhances the response of the U.S. and Japan to activity in geosynchronous orbit.