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Soyuz 7K-ST No. 4L

Re-entered 15 Apr 1978

Soyuz 7K-ST No. 4L (NORAD 10783, COSPAR 1978-036A) was a SU satellite that re-entered Earth's atmosphere on 15 Apr 1978, launched on 4 Apr 1978 on the Soyuz 7K-ST No. 4L mission. It was operated by NPOE as part of the 7K-ST programme. The spacecraft was built by NPOE on the 7K-ST 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.

1978
launched
1978
re-entered
0
years on orbit
2,850
kg mass

Lifecycle

Launched4 Apr 1978 · on the Soyuz 7K-ST No. 4L mission
Operational15 Apr 1978 · entered service
Retired15 Apr 1978 · end of operational service
Re-entered15 Apr 1978 · atmospheric re-entry — object destroyed

Specifications

NORAD ID10783
COSPAR1978-036A
TypeSatellite
OperatorNPOE
Country / StateSU
ManufacturerNPOE
Bus7K-ST
Mass2,850 kg
Programme7K-ST
CategorySS
OrbitLEO (LLEO/I)
Altitude196 × 287 km
Inclination51.6°

Frequently asked questions

What happened to Soyuz 7K-ST No. 4L?

Soyuz 7K-ST No. 4L re-entered Earth's atmosphere on 15 Apr 1978, ending a mission that began with its launch in 1978. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Soyuz 7K-ST No. 4L re-enter the atmosphere?

Soyuz 7K-ST No. 4L re-entered on 15 Apr 1978, according to Orbital Radar's historical catalogue records.

Who operated and built Soyuz 7K-ST No. 4L?

Soyuz 7K-ST No. 4L 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.