🛰️ SATELLITE · HISTORICAL RECORD
ERS 9
Retired 1963ERS 9 (NORAD 635, COSPAR 1963-030B) is a retired US satellite, withdrawn from service around 7 Nov 1963, launched on 19 Jul 1963 on the Midas ETS-III F4 mission. It was operated by AFSSD as part of the TRS I programme. The spacecraft was built by TRW on the TRS bus, with a mass of 1 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1963
launched
1963
retired
63
years on orbit
1
kg mass
Lifecycle
Launched19 Jul 1963 · on the Midas ETS-III F4 mission
Operational7 Nov 1963 · entered service
Retired7 Nov 1963 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID635
COSPAR1963-030B
TypeSatellite
OperatorAFSSD
Country / StateUS
ManufacturerTRW
BusTRS
Mass1 kg
ProgrammeTRS I
CategoryTECH
OrbitMEO (MEO)
Altitude3,663 × 3,734 km
Inclination88.4°
Frequently asked questions
What happened to ERS 9?
ERS 9 was retired from service around 7 Nov 1963 after launching in 1963. It is no longer operational but remains catalogued.
Who operated and built ERS 9?
ERS 9 was operated by AFSSD and built by TRW (US).
Launched together
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.