🛰️ SATELLITE · HISTORICAL RECORD
USA 347
Retired 2023USA 347 (NORAD 57837, COSPAR 2023-140B) is a retired US satellite, withdrawn from service around 10 Sep 2023, launched on 10 Sep 2023 on the SILENT BARKER mission. It is catalogued as SILENT BARKER 2. It was operated by NRO / USSF SSC as part of the SILENT BARKER programme. The spacecraft was built by UNKUS on the SILENTBARKER bus, with a mass of 1,200 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
2023
launched
2023
retired
3
years on orbit
1,200
kg mass
Lifecycle
Launched10 Sep 2023 · on the SILENT BARKER mission
Operational10 Sep 2023 · entered service
Retired10 Sep 2023 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID57837
COSPAR2023-140B
TypeSatellite
OperatorNRO / USSF SSC
Country / StateUS
ManufacturerUNKUS
BusSILENTBARKER
Mass1,200 kg (1,000 kg dry)
ProgrammeSILENT BARKER
CategoryEW*
OrbitGEO (GEO/ID)
Altitude36,214 × 36,234 km
Inclination12.0°
Frequently asked questions
What happened to USA 347?
USA 347 was retired from service around 10 Sep 2023 after launching in 2023. It is no longer operational but remains catalogued.
Who operated and built USA 347?
USA 347 was operated by NRO / USSF SSC and built by UNKUS (US).
Launched together
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-10-21.