🛰️ SATELLITE · HISTORICAL RECORD
Secor II S/N 9 (TR-30A)
Retired 1966Secor II S/N 9 (TR-30A) (NORAD 2520, COSPAR 1966-089B) is a retired US satellite, withdrawn from service around 5 Oct 1966, launched on 5 Oct 1966 on the Midas RTS-I F3 mission. It was operated by ACE / GIMR as part of the Secor II programme. The spacecraft was built by ITT on the Secor bus, with a mass of 18 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1966
launched
1966
retired
60
years on orbit
18
kg mass
Lifecycle
Launched5 Oct 1966 · on the Midas RTS-I F3 mission
Operational5 Oct 1966 · entered service
Retired5 Oct 1966 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID2520
COSPAR1966-089B
TypeSatellite
OperatorACE / GIMR
Country / StateUS
ManufacturerITT
BusSecor
Mass18 kg
ProgrammeSecor II
CategoryGEOD
OrbitMEO (MEO)
Altitude3,682 × 3,704 km
Inclination90.2°
Frequently asked questions
What happened to Secor II S/N 9 (TR-30A)?
Secor II S/N 9 (TR-30A) was retired from service around 5 Oct 1966 after launching in 1966. It is no longer operational but remains catalogued.
Who operated and built Secor II S/N 9 (TR-30A)?
Secor II S/N 9 (TR-30A) was operated by ACE / GIMR and built by ITT (US).
Launched together
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.