CLASSIFIED
BB 1
US Military Mesh Communications (SDA Tranche 0 Transport Layer) · US Space Development Agency
Right now
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BB 1, the final satellite of the April 2023 SDA Tranche 0 Transport Layer launch, completed the ten-satellite mesh network demonstration that validated the core technology now underpinning the much larger operational Tranche 1 constellation — 126 satellites and counting.
Its orbit
- Orbit
- Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
- Altitude
- 479–493 mi (770–793 km)
- Inclination
- 81.0°
- One orbit
- 100.3 minutes14.4 orbits a day
- NORAD ID
- 56171
- Int’l designator
- 2023-050K
- Launched
- 2023
Orbital elements from CelesTrak, as of 22 Sep 2026.
More classified
- BB 2US Military Mesh Communications (SDA Tranche 0 Transport Layer)
- BB3US Military Mesh Communications (SDA Tranche 0 Transport Layer)
- BB4Military Technology Demonstrator (SDA Tranche 0)
- BLACKJACK ACES-1US Military Technology Demonstrator (Scaled-Down Constellation)
- BLACKJACK ACES-2US Military Technology Demonstrator
- BLACKJACK ACES-3US Military Technology Demonstrator (Scaled-Down Constellation)