🛰️ SATELLITE · HISTORICAL RECORD
DMSP Block 5C F-1
Retired 1974DMSP Block 5C F-1 (NORAD 7411, COSPAR 1974-063A) is a retired US satellite, withdrawn from service around 22 Nov 1974, launched on 9 Aug 1974 on the DMSP Block 5C F-1 mission. It was operated by SAMSO as part of the DMSP 5C programme. The spacecraft was built by RCA on the DMSP Block 5C bus, with a mass of 195 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1974
launched
1974
retired
52
years on orbit
195
kg mass
Lifecycle
Launched9 Aug 1974 · on the DMSP Block 5C F-1 mission
Operational22 Nov 1974 · entered service
Retired22 Nov 1974 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID7411
COSPAR1974-063A
TypeSatellite
OperatorSAMSO
Country / StateUS
ManufacturerRCA
BusDMSP Block 5C
Mass195 kg
ProgrammeDMSP 5C
CategoryMET
OrbitLEO (LEO/S)
Altitude803 × 875 km
Inclination98.9°
Frequently asked questions
What happened to DMSP Block 5C F-1?
DMSP Block 5C F-1 was retired from service around 22 Nov 1974 after launching in 1974. It is no longer operational but remains catalogued.
Who operated and built DMSP Block 5C F-1?
DMSP Block 5C F-1 was operated by SAMSO and built by RCA (US).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.