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🛰️ SATELLITE · HISTORICAL RECORD

TD-1A

Re-entered 9 Jan 1980

TD-1A (NORAD 5879, COSPAR 1972-014A) was a I-ESRO satellite that re-entered Earth's atmosphere on 9 Jan 1980, launched on 12 Mar 1972 on the TD-1A mission. It was operated by ESRO as part of the TD-1A programme. The spacecraft was built by MATT on the TD-1 bus, with a mass of 460 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.

1972
launched
1980
re-entered
8
years on orbit
460
kg mass

Lifecycle

Launched12 Mar 1972 · on the TD-1A mission
Operational5 May 1974 · entered service
Retired5 May 1974 · end of operational service
Re-entered9 Jan 1980 · atmospheric re-entry — object destroyed

Specifications

NORAD ID5879
COSPAR1972-014A
TypeSatellite
OperatorESRO
Country / StateI-ESRO
ManufacturerMATT
BusTD-1
Mass460 kg
ProgrammeTD-1A
CategoryAST
OrbitLEO (LLEO/S)
Altitude525 × 544 km
Inclination97.6°

Frequently asked questions

What happened to TD-1A?

TD-1A re-entered Earth's atmosphere on 9 Jan 1980, ending a mission that began with its launch in 1972. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did TD-1A re-enter the atmosphere?

TD-1A re-entered on 9 Jan 1980, according to Orbital Radar's historical catalogue records.

Who operated and built TD-1A?

TD-1A was operated by ESRO and built by MATT (I-ESRO).

Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.