🛰️ SATELLITE · HISTORICAL RECORD
OV1-21P/FW4S
Retired 1971OV1-21P/FW4S (NORAD 5397, COSPAR 1971-067B) is a retired US satellite, withdrawn from service around 6 Sep 1971, launched on 7 Aug 1971 on the OAR-901 mission. It was operated by STP as part of the OV1 P programme. The spacecraft was built by GDC on the OV1P bus, with a mass of 359 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1971
launched
1971
retired
55
years on orbit
359
kg mass
Lifecycle
Launched7 Aug 1971 · on the OAR-901 mission
Operational6 Sep 1971 · entered service
Retired6 Sep 1971 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID5397
COSPAR1971-067B
TypeSatellite
OperatorSTP
Country / StateUS
ManufacturerGDC
BusOV1P
Mass359 kg
ProgrammeOV1 P
CategorySCI
OrbitLEO (LEO/P)
Altitude787 × 915 km
Inclination87.6°
Frequently asked questions
What happened to OV1-21P/FW4S?
OV1-21P/FW4S was retired from service around 6 Sep 1971 after launching in 1971. It is no longer operational but remains catalogued.
Who operated and built OV1-21P/FW4S?
OV1-21P/FW4S was operated by STP and built by GDC (US).
Launched together
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.