🛰️ SATELLITE · HISTORICAL RECORD
Geos C
Retired 1981Geos C (NORAD 7734, COSPAR 1975-027A) is a retired US satellite, withdrawn from service around 1 May 1981, launched on 9 Apr 1975 on the Geos C mission. It was operated by WFC as part of the Geos-C programme. The spacecraft was built by APL on the ANNA bus, with a mass of 340 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1975
launched
1981
retired
51
years on orbit
340
kg mass
Lifecycle
Launched9 Apr 1975 · on the Geos C mission
Operational1 May 1981 · entered service
Retired1 May 1981 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID7734
COSPAR1975-027A
TypeSatellite
OperatorWFC
Country / StateUS
ManufacturerAPL
BusANNA
Mass340 kg
ProgrammeGeos-C
CategoryGEOD
OrbitLEO (LEO/R)
Altitude821 × 855 km
Inclination115.0°
Frequently asked questions
What happened to Geos C?
Geos C was retired from service around 1 May 1981 after launching in 1975. It is no longer operational but remains catalogued.
Who operated and built Geos C?
Geos C was operated by WFC and built by APL (US).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.