🛰️ SATELLITE · HISTORICAL RECORD
OPS 4966
Retired 1982OPS 4966 (NORAD 7963, COSPAR 1975-055A) is a retired US satellite, withdrawn from service around 1 Jan 1982, launched on 18 Jun 1975 on the CANYON 6 mission. It is catalogued as CANYON 6. It was operated by NRO / SAFSP as part of the CANYON programme. The spacecraft was built by LMSC? on the CANYON Block 2 bus, with a mass of 350 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1975
launched
1982
retired
51
years on orbit
350
kg mass
Lifecycle
Launched18 Jun 1975 · on the CANYON 6 mission
Operational1 Jan 1982 · entered service
Retired1 Jan 1982 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID7963
COSPAR1975-055A
TypeSatellite
OperatorNRO / SAFSP
Country / StateUS
ManufacturerLMSC?
BusCANYON Block 2
Mass350 kg
ProgrammeCANYON
CategorySIG
OrbitGEO (GEO/NS)
Altitude30,200 × 40,800 km
Inclination9.0°
Frequently asked questions
What happened to OPS 4966?
OPS 4966 was retired from service around 1 Jan 1982 after launching in 1975. It is no longer operational but remains catalogued.
Who operated and built OPS 4966?
OPS 4966 was operated by NRO / SAFSP and built by LMSC? (US).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-10-22.