JAXA
Japan Aerospace Exploration Agency — Space Tracking and Communications
Cabinet Office, Government of Japan
Japan's national space agency, separate from the Japan MoD UAP track already covered in this archive. JAXA operates Japan's space-domain awareness sensors and contributes to the international orbital-anomaly catalogue.
About the program
JAXA was established in October 2003 by merger of the Institute of Space and Astronautical Science, the National Aerospace Laboratory of Japan, and the National Space Development Agency. Its Space Situational Awareness (SSA) operation runs deep-space radar at Kamisaibara and optical telescopes at Bisei, both contributing to the international tracked-object catalogue.
JAXA's distinct UAP relevance is methodological rather than archival: it co-operates with the US Space Force on routine orbital-anomaly referral and, since 2020, has been part of the formal information-sharing arrangement under the US–Japan SSA Cooperation framework. Japan's MoD UAP track (covered separately in this archive) handles atmospheric UAP; JAXA handles orbital and deep-space tracking.
Public JAXA UAP material is limited. The agency's annual SSA reports include anonymised statistics on unattributed orbital tracks; specific case-level material has not been released. The institutional structure is informative even where the case files are not.
Landmark documents
Direct primary-source links. Where a backup mirror exists for a known link-rot risk, we name the host.
- Policy document · 2024
JAXA Space Situational Awareness Programme overview
The current public-facing description of JAXA's SSA capabilities, including the Kamisaibara and Bisei sensors and the international cooperation framework.
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