🛰️ SATELLITE · HISTORICAL RECORD
Midas ETS-II F1
Retired 1961Midas ETS-II F1 (NORAD 163, COSPAR 1961 SIG 1) is a retired US satellite, withdrawn from service around 12 Jul 1961, launched on 12 Jul 1961. It was operated by AFSSD as part of the Midas ETS-II programme. The spacecraft was built by LMSC on the Midas bus, with a mass of 840 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1961
launched
1961
retired
65
years on orbit
840
kg mass
Lifecycle
Launched12 Jul 1961
Operational12 Jul 1961 · entered service
Retired12 Jul 1961 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID163
COSPAR1961 SIG 1
TypeSatellite
OperatorAFSSD
Country / StateUS
ManufacturerLMSC
BusMidas
Mass840 kg
ProgrammeMidas ETS-II
CategoryEW
OrbitMEO (MEO)
Altitude3,354 × 3,535 km
Inclination91.1°
Frequently asked questions
What happened to Midas ETS-II F1?
Midas ETS-II F1 was retired from service around 12 Jul 1961 after launching in 1961. It is no longer operational but remains catalogued.
Who operated and built Midas ETS-II F1?
Midas ETS-II F1 was operated by AFSSD and built by LMSC (US).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.