Soyuz 7K-S No. 1L

Re-entered 9 Aug 1974

Soyuz 7K-S No. 1L (NORAD 7405, COSPAR 1974-061A) was a SU satellite that re-entered Earth's atmosphere on 9 Aug 1974, launched on 6 Aug 1974 on the Soyuz 7K-S No. 1L mission. It was operated by NPOE as part of the 7K-S programme. The spacecraft was built by NPOE on the 7K-S 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.

1974

launched

1974

re-entered

years on orbit

2,850

kg mass

Lifecycle

Launched6 Aug 1974 · on the Soyuz 7K-S No. 1L mission

Operational9 Aug 1974 · entered service

Retired9 Aug 1974 · end of operational service

Re-entered9 Aug 1974 · atmospheric re-entry — object destroyed

Specifications

NORAD ID7405

COSPAR1974-061A

TypeSatellite

OperatorNPOE

Country / StateSU

ManufacturerNPOE

Bus7K-S

Mass2,850 kg

Programme7K-S

CategorySS

OrbitLEO (LLEO/I)

Altitude209 × 288 km

Inclination50.5°

Frequently asked questions

What happened to Soyuz 7K-S No. 1L?

Soyuz 7K-S No. 1L re-entered Earth's atmosphere on 9 Aug 1974, ending a mission that began with its launch in 1974. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Soyuz 7K-S No. 1L re-enter the atmosphere?

Soyuz 7K-S No. 1L re-entered on 9 Aug 1974, according to Orbital Radar's historical catalogue records.

Who operated and built Soyuz 7K-S No. 1L?

Soyuz 7K-S No. 1L 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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