🛰️ SATELLITE · HISTORICAL RECORD
Tsiklon No. 18L
Retired 1970Tsiklon No. 18L (NORAD 4369, COSPAR 1970-028A) is a retired SU satellite, withdrawn from service around 1 Jan 1970, launched on 11 Apr 1970 on the Tsiklon mission. It was operated by OKB10 as part of the Tsiklon A1 programme. The spacecraft was built by OKB10 on the KAUR-1 11F617 bus, with a mass of 775 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1970
launched
1970
retired
56
years on orbit
775
kg mass
Lifecycle
Launched11 Apr 1970 · on the Tsiklon mission
Operational1 Jan 1970 · entered service
Retired1 Jan 1970 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID4369
COSPAR1970-028A
TypeSatellite
OperatorOKB10
Country / StateSU
ManufacturerOKB10
BusKAUR-1 11F617
Mass775 kg
ProgrammeTsiklon A1
CategoryNAV
OrbitLEO (LEO/I)
Altitude752 × 760 km
Inclination74.0°
Frequently asked questions
What happened to Tsiklon No. 18L?
Tsiklon No. 18L was retired from service around 1 Jan 1970 after launching in 1970. It is no longer operational but remains catalogued.
Who operated and built Tsiklon No. 18L?
Tsiklon No. 18L was operated by OKB10 and built by OKB10 (SU).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.