🛰️ SATELLITE · HISTORICAL RECORD
OV1-4S
Retired 1966OV1-4S (NORAD 2121, COSPAR 1966-025A) is a retired US satellite, withdrawn from service around 1 Jan 1966, launched on 30 Mar 1966 on the OV1-4S mission. It was operated by OAR as part of the OV1 X programme. The spacecraft was built by GDC on the OV1 bus, with a mass of 87 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1966
launched
1966
retired
60
years on orbit
87
kg mass
Lifecycle
Launched30 Mar 1966 · on the OV1-4S mission
Operational1 Jan 1966 · entered service
Retired1 Jan 1966 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID2121
COSPAR1966-025A
TypeSatellite
OperatorOAR
Country / StateUS
ManufacturerGDC
BusOV1
Mass87 kg
ProgrammeOV1 X
CategorySCI
OrbitLEO (LEO/R)
Altitude888 × 1,014 km
Inclination144.5°
Frequently asked questions
What happened to OV1-4S?
OV1-4S was retired from service around 1 Jan 1966 after launching in 1966. It is no longer operational but remains catalogued.
Who operated and built OV1-4S?
OV1-4S was operated by OAR and built by GDC (US).
Launched together
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.