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A Mitsubishi Heavy Industries H3 rocket will launch the eighth Michibiki (QZS 7) navigation satellite for JAXA into geostationary orbit. The mission is designated as H3F9. Michibiki 7 will join Japan's Quasi-Zenith Satellite System, which operates from inclined, elliptical geosynchronous orbits to provide optimal high-elevation visibility in urban canyons and mountainous areas across the Asia-Pacific region. It will also host two U.S. optical sensors (SACHI) developed by MIT Lincoln Laboratory, which will augment the Space Force’s space domain awareness capabilities for the US Space Systems Command. The H3 launcher will fly as 22S variant with two main engines, two SRB-3 solid strap-on boosters and a short fairing. - Michibiki 5 is built on Mitsubishi Electric's DS2000 bus and has a launch mass of ~4.9 tonnes, a power generation of 2.7kW and a design life of more than 15 years. QZSS provides the Centimeter Level Augmentation Service for real-time positioning with 6-12 cm horizontal accuracy, and the Satellite Report for Disaster and Crisis Management for emergency communications. The four-satellite constellation has been operational since November 2018 and is expanding toward a seven-spacecraft system. The system transmits GPS-interoperable signals on L1, L2, and L5 frequencies. - Delayed from late 2025.
📍 Yoshinobu Launch Complex 2 - Tanegashima Space Center, Japan, 〒891-3703 Kagoshima, Kumage District, Minamitane, Kukinaga, 麻津