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🛰️ SATELLITE · HISTORICAL RECORD

Vela 5A

Re-entered 1 Jul 1984

Vela 5A (NORAD 3954, COSPAR 1969-046D) was a US satellite that re-entered Earth's atmosphere on 1 Jul 1984, launched on 23 May 1969 on the ERS 29 mission. It was operated by SAMSO as part of the Vela programme. The spacecraft was built by TRW on the Vela bus, with a mass of 250 kg. Like most satellites in low orbits, it was gradually slowed by atmospheric drag until re-entry. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.

1969
launched
1984
re-entered
15
years on orbit
250
kg mass

Lifecycle

Launched23 May 1969 · on the ERS 29 mission
Operational27 Sep 1984 · entered service
Retired27 Sep 1984 · end of operational service
Re-entered1 Jul 1984 · atmospheric re-entry — object destroyed

Specifications

NORAD ID3954
COSPAR1969-046D
TypeSatellite
OperatorSAMSO
Country / StateUS
ManufacturerTRW
BusVela
Mass250 kg
ProgrammeVela
CategoryEW
Orbit (VHEO)
Altitude110,891 × 111,955 km
Inclination33.1°

Frequently asked questions

What happened to Vela 5A?

Vela 5A re-entered Earth's atmosphere on 1 Jul 1984, ending a mission that began with its launch in 1969. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Vela 5A re-enter the atmosphere?

Vela 5A re-entered on 1 Jul 1984, according to Orbital Radar's historical catalogue records.

Who operated and built Vela 5A?

Vela 5A was operated by SAMSO and built by TRW (US).

Launched together

ERS 29NORAD 3950ERS 26NORAD 3951ERS 22NORAD 3952Vela 5BRe-entered 1983
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.