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USA-554
Undisclosed military satellite. USA-554 was launched on August 13, 2025 aboard a Vulcan Centaur VC4S from Cape Canaveral & Kennedy. Latest status in GCAT: in orbit.
COSPAR 2025-173BNORAD 65161United States
Identity
- Name in GCAT
- USA 554
- Common name
- USA-554
- Payload designation
- LDPE 5?
- Other names
- ESPAStar?
- International designator
- 2025-173B
- NORAD catalog number
- 65161
- GCAT identifier
- S65161
Mission
- Mission type
- Technology
- Use
- Defense
- Program
- LDPE
- Owner
- USSF
- Country
- United States
- Builder
- Northrop Grumman Space Systems Group (SSG)
- Platform (bus)
- LDPE?
Launch
- Date
- August 13, 2025 · 00:56 UTC
- Launch record
- 2025-173Success
- Rocket
- Vulcan Centaur VC4S
- Spaceport
- Cape Canaveral & Kennedy · pad SLC41
Orbit and fate
- Orbit class (GCAT)
- GEO/D
- Perigee
- 36,116 km
- Apogee
- 36,191 km
- Inclination
- 2.85°
- Status
- In orbit
- Last known active
- Aug 13, 2025
Size
- Mass
- 500 kg
- Dry mass
- 500 kg
- Length
- 2.0 m
- Diameter
- 2.00 m
- Span
- 5.0 m
Launched together
Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q135778080 (CC0).