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ESO

Re-entered 10 Mar 1989

ESO (NORAD 19806, COSPAR 1989-012D) was a SU satellite that re-entered Earth's atmosphere on 10 Mar 1989, launched on 14 Feb 1989 on the Duga-K mission. It was operated by PVO as part of the ESO programme. The spacecraft was built by YUZH on the ESO bus, with a mass of 5 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.

1989
launched
1989
re-entered
0
years on orbit
5
kg mass

Lifecycle

Launched14 Feb 1989 · on the Duga-K mission
Operational14 Feb 1989 · entered service
Retired14 Feb 1989 · end of operational service
Re-entered10 Mar 1989 · atmospheric re-entry — object destroyed

Specifications

NORAD ID19806
COSPAR1989-012D
TypeSatellite
OperatorPVO
Country / StateSU
ManufacturerYUZH
BusESO
Mass5 kg
ProgrammeESO
CategoryCAL
OrbitLEO (LEO/I)
Altitude182 × 1,861 km
Inclination65.9°

Frequently asked questions

What happened to ESO?

ESO re-entered Earth's atmosphere on 10 Mar 1989, ending a mission that began with its launch in 1989. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did ESO re-enter the atmosphere?

ESO re-entered on 10 Mar 1989, according to Orbital Radar's historical catalogue records.

Who operated and built ESO?

ESO was operated by PVO and built by YUZH (SU).

Launched together

Duga-K No. 1LRe-entered 1989ESORe-entered 1989ESORe-entered 1989ESORe-entered 1989ESORe-entered 1989ESORe-entered 1989ESORe-entered 1989ESORe-entered 1989
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.