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🛰️ SATELLITE · HISTORICAL RECORD

FSB No. 166-01

Re-entered 9 Apr 1987

FSB No. 166-01 (NORAD 17851, COSPAR 1987-030C) was a SU satellite that re-entered Earth's atmosphere on 9 Apr 1987, launched on 31 Mar 1987 on the TsM-e 37Ke No. 010 mission. It was operated by NPOE as part of the TKS programme. The spacecraft was built by ZIKH on the 77KS bus, with a mass of 9,550 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.

1987
launched
1987
re-entered
0
years on orbit
9,550
kg mass

Lifecycle

Launched31 Mar 1987 · on the TsM-e 37Ke No. 010 mission
Operational25 Aug 1988 · entered service
Retired25 Aug 1988 · end of operational service
Re-entered9 Apr 1987 · atmospheric re-entry — object destroyed

Specifications

NORAD ID17851
COSPAR1987-030C
TypeSatellite
OperatorNPOE
Country / StateSU
ManufacturerZIKH
Bus77KS
Mass9,550 kg (9,000 kg dry)
ProgrammeTKS
CategorySS
OrbitLEO (LLEO/I)
Altitude380 × 404 km
Inclination51.6°

Frequently asked questions

What happened to FSB No. 166-01?

FSB No. 166-01 re-entered Earth's atmosphere on 9 Apr 1987, ending a mission that began with its launch in 1987. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did FSB No. 166-01 re-enter the atmosphere?

FSB No. 166-01 re-entered on 9 Apr 1987, according to Orbital Radar's historical catalogue records.

Who operated and built FSB No. 166-01?

FSB No. 166-01 was operated by NPOE and built by ZIKH (SU).

Launched together

TsM-eRe-entered 1987
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.