🛰️ SATELLITE · HISTORICAL RECORD
Secor I S/N 2 (TR-27)
Retired 1966Secor I S/N 2 (TR-27) (NORAD 1506, COSPAR 1965-063A) is a retired US satellite, withdrawn from service around 1 Mar 1966, launched on 10 Aug 1965 on the Secor Type I S/N 2 mission. It was operated by ACE / GIMR as part of the Secor I programme. The spacecraft was built by CUBIC on the NRL 20" bus, with a mass of 18 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1965
launched
1966
retired
61
years on orbit
18
kg mass
Lifecycle
Launched10 Aug 1965 · on the Secor Type I S/N 2 mission
Operational1 Mar 1966 · entered service
Retired1 Mar 1966 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID1506
COSPAR1965-063A
TypeSatellite
OperatorACE / GIMR
Country / StateUS
ManufacturerCUBIC
BusNRL 20"
Mass18 kg
ProgrammeSecor I
CategoryGEOD
OrbitLEO (LEO/I)
Altitude1,136 × 2,424 km
Inclination69.2°
Frequently asked questions
What happened to Secor I S/N 2 (TR-27)?
Secor I S/N 2 (TR-27) was retired from service around 1 Mar 1966 after launching in 1965. It is no longer operational but remains catalogued.
Who operated and built Secor I S/N 2 (TR-27)?
Secor I S/N 2 (TR-27) was operated by ACE / GIMR and built by CUBIC (US).
Launched together
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.