🛰️ SATELLITE · HISTORICAL RECORD
Transit 4B
Retired 1962Transit 4B (NORAD 202, COSPAR 1961 A ETA 1) is a retired US satellite, withdrawn from service around 2 Aug 1962, launched on 15 Nov 1961. It was operated by BUWEPS as part of the Transit programme. The spacecraft was built by APL on the Transit 4 bus, with a mass of 89 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
1961
launched
1962
retired
65
years on orbit
89
kg mass
Lifecycle
Launched15 Nov 1961
Operational2 Aug 1962 · entered service
Retired2 Aug 1962 · end of operational service
StatusOn orbit (not live-tracked)
Specifications
NORAD ID202
COSPAR1961 A ETA 1
TypeSatellite
OperatorBUWEPS
Country / StateUS
ManufacturerAPL
BusTransit 4
Mass89 kg
ProgrammeTransit
CategoryNAV
OrbitLEO (LEO/I)
Altitude953 × 1,108 km
Inclination32.4°
Frequently asked questions
What happened to Transit 4B?
Transit 4B was retired from service around 2 Aug 1962 after launching in 1961. It is no longer operational but remains catalogued.
Who operated and built Transit 4B?
Transit 4B was operated by BUWEPS and built by APL (US).
Launched together
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.