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Kol'tso No. 1L

Re-entered 4 May 1992

Kol'tso No. 1L (NORAD 19720, COSPAR 1988-113A) was a SU satellite that re-entered Earth's atmosphere on 4 May 1992, launched on 23 Dec 1988 on the Kol'tso No. 1L mission. It was operated by UNKS as part of the Koltso programme. The spacecraft was built by YUZH on the Kol'tso bus, with a mass of 1,450 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.

1988
launched
1992
re-entered
4
years on orbit
1,450
kg mass

Lifecycle

Launched23 Dec 1988 · on the Kol'tso No. 1L mission
Operational1 Feb 1990 · entered service
Retired1 Feb 1990 · end of operational service
Re-entered4 May 1992 · atmospheric re-entry — object destroyed

Specifications

NORAD ID19720
COSPAR1988-113A
TypeSatellite
OperatorUNKS
Country / StateSU
ManufacturerYUZH
BusKol'tso
Mass1,450 kg
ProgrammeKoltso
CategoryCAL
OrbitLEO (LLEO/I)
Altitude522 × 528 km
Inclination73.6°

Frequently asked questions

What happened to Kol'tso No. 1L?

Kol'tso No. 1L re-entered Earth's atmosphere on 4 May 1992, ending a mission that began with its launch in 1988. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Kol'tso No. 1L re-enter the atmosphere?

Kol'tso No. 1L re-entered on 4 May 1992, according to Orbital Radar's historical catalogue records.

Who operated and built Kol'tso No. 1L?

Kol'tso No. 1L was operated by UNKS and built by YUZH (SU).

Launched together

ESORe-entered 1989ESORe-entered 1989ESORe-entered 1989ESORe-entered 1989ESORe-entered 1990ESORe-entered 1989ESORe-entered 1989ESORe-entered 1989
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.