🛰️ SATELLITE · HISTORICAL RECORD
Strela-1M Blok 12 No. 1
Retired 1976Strela-1M Blok 12 No. 1 (NORAD 7820, COSPAR 1975-045A) is a retired SU satellite, withdrawn from service around 1 Jan 1976, launched on 28 May 1975 on the Strela-1M mission. It was operated by GUKOSR as part of the Strela-1M programme. The spacecraft was built by OKB10 on the Strela-1 11F625 bus, with a mass of 60 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1975
launched
1976
retired
51
years on orbit
60
kg mass
Lifecycle
Launched28 May 1975 · on the Strela-1M mission
Operational1 Jan 1976 · entered service
Retired1 Jan 1976 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID7820
COSPAR1975-045A
TypeSatellite
OperatorGUKOSR
Country / StateSU
ManufacturerOKB10
BusStrela-1 11F625
Mass60 kg
ProgrammeStrela-1M
CategoryCOM
OrbitLEO (LEO/I)
Altitude1,404 × 1,471 km
Inclination74.0°
Frequently asked questions
What happened to Strela-1M Blok 12 No. 1?
Strela-1M Blok 12 No. 1 was retired from service around 1 Jan 1976 after launching in 1975. It is no longer operational but remains catalogued.
Who operated and built Strela-1M Blok 12 No. 1?
Strela-1M Blok 12 No. 1 was operated by GUKOSR and built by OKB10 (SU).
Launched together
Strela-1M Blok 12 No. 2Strela-1M Blok 12 No. 3Strela-1M Blok 12 No. 4Strela-1M Blok 12 No. 5Strela-1M Blok 12 No. 6Strela-1M Blok 12 No. 7Strela-1M Blok 12 No. 8
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.