🛰️ SATELLITE · HISTORICAL RECORD
NNS O-10
Retired 1975NNS O-10 (NORAD 2401, COSPAR 1966-076A) is a retired US satellite, withdrawn from service around 1 Jan 1975, launched on 18 Aug 1966 on the NNS O-10 mission. It was operated by NAVAIR as part of the NNS A programme. The spacecraft was built by APL on the Transit 5 bus, with a mass of 49 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1966
launched
1975
retired
60
years on orbit
49
kg mass
Lifecycle
Launched18 Aug 1966 · on the NNS O-10 mission
Operational11 Aug 1967 · entered service
Retired1 Jan 1975 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID2401
COSPAR1966-076A
TypeSatellite
OperatorNAVAIR
Country / StateUS
ManufacturerAPL
BusTransit 5
Mass49 kg
ProgrammeNNS A
CategoryNAV
OrbitLEO (LEO/P)
Altitude1,052 × 1,102 km
Inclination88.9°
Frequently asked questions
What happened to NNS O-10?
NNS O-10 was retired from service around 1 Jan 1975 after launching in 1966. It is no longer operational but remains catalogued.
How long was NNS O-10 operational?
NNS O-10 was operational for roughly 7 years, from 11 Aug 1967 to 1 Jan 1975.
Who operated and built NNS O-10?
NNS O-10 was operated by NAVAIR and built by APL (US).
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.