🛰️ SATELLITE · HISTORICAL RECORD
I2P No. 506
Retired 1971I2P No. 506 (NORAD 4964, COSPAR 1971-015A) is a retired SU satellite, withdrawn from service around 25 Feb 1971, launched on 25 Feb 1971 on the I2P mission. It was operated by PKO as part of the IS 5V91T programme. The spacecraft was built by TSKBM/KB1 on the IS bus, with a mass of 1,400 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1971
launched
1971
retired
55
years on orbit
1,400
kg mass
Lifecycle
Launched25 Feb 1971 · on the I2P mission
Operational25 Feb 1971 · entered service
Retired25 Feb 1971 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID4964
COSPAR1971-015A
TypeSatellite
OperatorPKO
Country / StateSU
ManufacturerTSKBM/KB1
BusIS
Mass1,400 kg
ProgrammeIS 5V91T
CategoryWEAPON
OrbitLEO (LEO/I)
Altitude574 × 2,200 km
Inclination65.7°
Frequently asked questions
What happened to I2P No. 506?
I2P No. 506 was retired from service around 25 Feb 1971 after launching in 1971. It is no longer operational but remains catalogued.
Who operated and built I2P No. 506?
I2P No. 506 was operated by PKO and built by TSKBM/KB1 (SU).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.