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Yantar'-4KS1M No. 1L

Re-entered 3 Oct 1986

Yantar'-4KS1M No. 1L (NORAD 16589, COSPAR 1986-013A) was a SU satellite that re-entered Earth's atmosphere on 3 Oct 1986, launched on 7 Feb 1986 on the Terilen mission. It was operated by GUKOS as part of the Neman programme. The spacecraft was built by TSSKB on the Yantar'-4KS1 bus, with a mass of 3,390 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.

1986
launched
1986
re-entered
0
years on orbit
3,390
kg mass

Lifecycle

Launched7 Feb 1986 · on the Terilen mission
Operational3 Oct 1986 · entered service
Retired3 Oct 1986 · end of operational service
Re-entered3 Oct 1986 · atmospheric re-entry — object destroyed

Specifications

NORAD ID16589
COSPAR1986-013A
TypeSatellite
OperatorGUKOS
Country / StateSU
ManufacturerTSSKB
BusYantar'-4KS1
Mass3,390 kg
ProgrammeNeman
CategoryIMG
OrbitLEO (LLEO/I)
Altitude238 × 259 km
Inclination64.8°

Frequently asked questions

What happened to Yantar'-4KS1M No. 1L?

Yantar'-4KS1M No. 1L re-entered Earth's atmosphere on 3 Oct 1986, ending a mission that began with its launch in 1986. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Yantar'-4KS1M No. 1L re-enter the atmosphere?

Yantar'-4KS1M No. 1L re-entered on 3 Oct 1986, according to Orbital Radar's historical catalogue records.

Who operated and built Yantar'-4KS1M No. 1L?

Yantar'-4KS1M No. 1L was operated by GUKOS and built by TSSKB (SU).

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