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Yantar'-4KS1M No. 2L

Re-entered 11 Sep 1987

Yantar'-4KS1M No. 2L (NORAD 17262, COSPAR 1986-102A) was a SU satellite that re-entered Earth's atmosphere on 11 Sep 1987, launched on 26 Dec 1986 on the Terilen mission. It was operated by UNKS 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
1987
re-entered
1
year on orbit
3,390
kg mass

Lifecycle

Launched26 Dec 1986 · on the Terilen mission
Operational11 Sep 1987 · entered service
Retired11 Sep 1987 · end of operational service
Re-entered11 Sep 1987 · atmospheric re-entry — object destroyed

Specifications

NORAD ID17262
COSPAR1986-102A
TypeSatellite
OperatorUNKS
Country / StateSU
ManufacturerTSSKB
BusYantar'-4KS1
Mass3,390 kg
ProgrammeNeman
CategoryIMG
OrbitLEO (LLEO/I)
Altitude245 × 256 km
Inclination64.8°

Frequently asked questions

What happened to Yantar'-4KS1M No. 2L?

Yantar'-4KS1M No. 2L re-entered Earth's atmosphere on 11 Sep 1987, 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. 2L re-enter the atmosphere?

Yantar'-4KS1M No. 2L re-entered on 11 Sep 1987, according to Orbital Radar's historical catalogue records.

Who operated and built Yantar'-4KS1M No. 2L?

Yantar'-4KS1M No. 2L was operated by UNKS and built by TSSKB (SU).

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