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BB 2



The BB3 (Tracking Layer) is an experimental military satellite constellation developed by the SDA (Space Development Agency) which will provide global indications, warning, tracking, and targeting of advanced missile threats, including hypersonic missile systems.

Alternate Names

  • BB2

Facts in Brief

Launch Date: 2023-04-02
Launch Vehicle: Falcon 9 Full Thrust
Launch Site: Vandenberg AFB, United States

Funding Agency

  • Department of Defense (United States)


  • Surveillance and Other Military

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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