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Yantar'-4K1 No. 2L

Re-entered 12 Jun 1980

Yantar'-4K1 No. 2L (NORAD 11789, COSPAR 1980-035A) was a SU satellite that re-entered Earth's atmosphere on 12 Jun 1980, launched on 29 Apr 1980 on the Yantar'-4K1 No. 2 mission. It was operated by TSSKB as part of the Oktan programme. The spacecraft was built by TSSKB on the Yantar'-4K1 bus, with a mass of 2,886 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
0
years on orbit
2,886
kg mass

Lifecycle

Launched29 Apr 1980 · on the Yantar'-4K1 No. 2 mission
Operational12 Jun 1980 · entered service
Retired12 Jun 1980 · end of operational service
Re-entered12 Jun 1980 · atmospheric re-entry — object destroyed

Specifications

NORAD ID11789
COSPAR1980-035A
TypeSatellite
OperatorTSSKB
Country / StateSU
ManufacturerTSSKB
BusYantar'-4K1
Mass2,886 kg
ProgrammeOktan
CategoryIMG
OrbitLEO (LLEO/I)
Altitude164 × 339 km
Inclination67.1°

Frequently asked questions

What happened to Yantar'-4K1 No. 2L?

Yantar'-4K1 No. 2L re-entered Earth's atmosphere on 12 Jun 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 Yantar'-4K1 No. 2L re-enter the atmosphere?

Yantar'-4K1 No. 2L re-entered on 12 Jun 1980, according to Orbital Radar's historical catalogue records.

Who operated and built Yantar'-4K1 No. 2L?

Yantar'-4K1 No. 2L was operated by TSSKB and built by TSSKB (SU).

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