Subscribe with SteadyUSA 396, 397, 398, 566, 567, 568, 569 (USSF 51)
These are several US military satellites of unknown purpose.
No details are known so far. They have been launched by an Atlas-5(551) rocket with medium sized fairing.
It is not known if these satellites are all the same design or if they are different. At least one appears to be an ESPA type deployer satellite similar to the LDPE satellites.
In October 2025, two subsatellite called USA 566 and USA 567 were released from one of the three satellites.
Note: The USSF designations refer to the launch, not to the payload.
| Nation: | USA |
|---|---|
| Type / Application: | ? |
| Operator: | USSF |
| Contractors: | ? |
| Equipment: | ? |
| Configuration: | |
| Propulsion: | ? |
| Power: | |
| Lifetime: | |
| Mass: | |
| Orbit: |
| Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
|---|---|---|---|---|---|---|
| USA 396 (USSF 51) | 2024-134A | 30.07.2024 | CC LC-41 | Atlas-5(551) | with USA 397, USA 398, USA 566, USA 567, 568, 569 | |
| USA 397 (USSF 51) | 2024-134B | 30.07.2024 | CC LC-41 | Atlas-5(551) | with USA 396, USA 398, USA 566, USA 567, 568, 569 | |
| USA 398 (USSF 51) | 2024-134C | 30.07.2024 | CC LC-41 | Atlas-5(551) | with USA 396, USA 397, USA 566, USA 567, 568, 569 | |
| USA 566 (USSF 51) | 2024-134H | 30.07.2024 | CC LC-41 | Atlas-5(551) | with USA 396, USA 397, USA 398, USA 567, 568, 569 | |
| USA 567 (USSF 51) | 2024-134J | 30.07.2024 | CC LC-41 | Atlas-5(551) | with USA 396, USA 397, USA 398, USA 566, 568, 569 | |
| USA 568 (USSF 51) | 2024-134K | 30.07.2024 | CC LC-41 | Atlas-5(551) | with USA 396, USA 397, USA 398, USA 566, 567, 569 | |
| USA 569 (USSF 51) | 2024-134L | 30.07.2024 | CC LC-41 | Atlas-5(551) | with USA 396, USA 397, USA 398, USA 566, 567, 568 |
Launch Sites:
- CC = Cape Canaveral Space Force Station, Eastern Test Range, Cape Canaveral, Florida, USA
