Soyuz 7K-T No. 54

Re-entered 19 Sep 1980

Soyuz 7K-T No. 54 (NORAD 11977, COSPAR 1980-075A) was a SU satellite that re-entered Earth's atmosphere on 19 Sep 1980, launched on 18 Sep 1980 on the Soyuz 7K-T No. 54 mission. It was operated by NPOE as part of the 7K-T programme. The spacecraft was built by NPOE on the 7K-T bus, with a mass of 2,850 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.

1980

launched

1980

re-entered

years on orbit

2,850

kg mass

Lifecycle

Launched18 Sep 1980 · on the Soyuz 7K-T No. 54 mission

Operational26 Sep 1980 · entered service

Retired26 Sep 1980 · end of operational service

Re-entered19 Sep 1980 · atmospheric re-entry — object destroyed

Specifications

NORAD ID11977

COSPAR1980-075A

TypeSatellite

OperatorNPOE

Country / StateSU

ManufacturerNPOE

Bus7K-T

Mass2,850 kg

Programme7K-T

CategorySS

OrbitLEO (LLEO/I)

Altitude262 × 313 km

Inclination51.6°

Frequently asked questions

What happened to Soyuz 7K-T No. 54?

Soyuz 7K-T No. 54 re-entered Earth's atmosphere on 19 Sep 1980, ending a mission that began with its launch in 1980. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Soyuz 7K-T No. 54 re-enter the atmosphere?

Soyuz 7K-T No. 54 re-entered on 19 Sep 1980, according to Orbital Radar's historical catalogue records.

Who operated and built Soyuz 7K-T No. 54?

Soyuz 7K-T No. 54 was operated by NPOE and built by NPOE (SU).

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

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