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Okean-OE No. 1L

Re-entered 12 Jun 2025

Okean-OE No. 1L (NORAD 14372, COSPAR 1983-099A) was a SU satellite that re-entered Earth's atmosphere on 12 Jun 2025, launched on 28 Sep 1983 on the Okean-OE NKhM No. 1 mission. It was operated by GMS / YUZH as part of the Okean-OE programme. The spacecraft was built by YUZH on the Okean bus, with a mass of 1,900 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.

1983
launched
2025
re-entered
42
years on orbit
1,900
kg mass

Lifecycle

Launched28 Sep 1983 · on the Okean-OE NKhM No. 1 mission
Operational16 Jul 1986 · entered service
Retired16 Jul 1986 · end of operational service
Re-entered12 Jun 2025 · atmospheric re-entry — object destroyed

Specifications

NORAD ID14372
COSPAR1983-099A
TypeSatellite
OperatorGMS / YUZH
Country / StateSU
ManufacturerYUZH
BusOkean
Mass1,900 kg
ProgrammeOkean-OE
CategoryIMG
OrbitLEO (LEO/I)
Altitude631 × 666 km
Inclination82.5°

Frequently asked questions

What happened to Okean-OE No. 1L?

Okean-OE No. 1L re-entered Earth's atmosphere on 12 Jun 2025, ending a mission that began with its launch in 1983. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Okean-OE No. 1L re-enter the atmosphere?

Okean-OE No. 1L re-entered on 12 Jun 2025, according to Orbital Radar's historical catalogue records.

Who operated and built Okean-OE No. 1L?

Okean-OE No. 1L was operated by GMS / YUZH and built by YUZH (SU).

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