Oko 5V95 No. 6006/3020

Re-entered 27 Sep 2023

Oko 5V95 No. 6006/3020 (NORAD 11509, COSPAR 1979-077A) was a SU satellite that re-entered Earth's atmosphere on 27 Sep 2023, launched on 28 Aug 1979 on the Oko mission. It was operated by PVO as part of the Oko D programme. The spacecraft was built by NPOL/KOMET on the Oko bus, with a mass of 1,250 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.

1979

launched

2023

re-entered

years on orbit

1,250

kg mass

Lifecycle

Launched28 Aug 1979 · on the Oko mission

Operational28 Sep 1979 · entered service

Retired28 Sep 1979 · end of operational service

Re-entered27 Sep 2023 · atmospheric re-entry — object destroyed

Specifications

NORAD ID11509

COSPAR1979-077A

TypeSatellite

OperatorPVO

Country / StateSU

ManufacturerNPOL/KOMET

BusOko

Mass1,250 kg (1,150 kg dry)

ProgrammeOko D

CategoryEW

OrbitHEO (HEO/M)

Altitude599 × 39,700 km

Inclination63.0°

Frequently asked questions

What happened to Oko 5V95 No. 6006/3020?

Oko 5V95 No. 6006/3020 re-entered Earth's atmosphere on 27 Sep 2023, ending a mission that began with its launch in 1979. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Oko 5V95 No. 6006/3020 re-enter the atmosphere?

Oko 5V95 No. 6006/3020 re-entered on 27 Sep 2023, according to Orbital Radar's historical catalogue records.

Who operated and built Oko 5V95 No. 6006/3020?

Oko 5V95 No. 6006/3020 was operated by PVO and built by NPOL/KOMET (SU).

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

Browse the live satellite directory → Re-entered satellites archive → Launch record: Oko → What is space debris? →