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Orlets-1 No. 1L

Re-entered 31 Aug 1989

Orlets-1 No. 1L (NORAD 20136, COSPAR 1989-056A) was a SU satellite that re-entered Earth's atmosphere on 31 Aug 1989, launched on 18 Jul 1989 on the Orlets mission. It was operated by TSSKB as part of the Don programme. The spacecraft was built by TSSKB on the Orlets bus, with a mass of 3,590 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
3,590
kg mass

Lifecycle

Launched18 Jul 1989 · on the Orlets mission
Operational15 Sep 1989 · entered service
Retired15 Sep 1989 · end of operational service
Re-entered31 Aug 1989 · atmospheric re-entry — object destroyed

Specifications

NORAD ID20136
COSPAR1989-056A
TypeSatellite
OperatorTSSKB
Country / StateSU
ManufacturerTSSKB
BusOrlets
Mass3,590 kg
ProgrammeDon
CategoryIMG
OrbitLEO (LLEO/I)
Altitude231 × 354 km
Inclination50.5°

Frequently asked questions

What happened to Orlets-1 No. 1L?

Orlets-1 No. 1L re-entered Earth's atmosphere on 31 Aug 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 Orlets-1 No. 1L re-enter the atmosphere?

Orlets-1 No. 1L re-entered on 31 Aug 1989, according to Orbital Radar's historical catalogue records.

Who operated and built Orlets-1 No. 1L?

Orlets-1 No. 1L was operated by TSSKB and built by TSSKB (SU).

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