🛰️ SATELLITE · HISTORICAL RECORD
DSP 2
Retired 1980DSP 2 (NORAD 6691, COSPAR 1973-040A) is a retired US satellite, withdrawn from service around 1 Nov 1980, launched on 12 Jun 1973 on the DSP 2 mission. It was operated by SAMSO as part of the DSP I programme. The spacecraft was built by TRW on the DSP bus, with a mass of 966 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1973
launched
1980
retired
53
years on orbit
966
kg mass
Lifecycle
Launched12 Jun 1973 · on the DSP 2 mission
Operational1 Nov 1980 · entered service
Retired1 Nov 1980 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID6691
COSPAR1973-040A
TypeSatellite
OperatorSAMSO
Country / StateUS
ManufacturerTRW
BusDSP
Mass966 kg (930 kg dry)
ProgrammeDSP I
CategoryEW
OrbitGEO (GEO/I)
Altitude35,728 × 35,846 km
Inclination5.0°
Frequently asked questions
What happened to DSP 2?
DSP 2 was retired from service around 1 Nov 1980 after launching in 1973. It is no longer operational but remains catalogued.
Who operated and built DSP 2?
DSP 2 was operated by SAMSO and built by TRW (US).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.