Oko 73D6 No. 6034

Re-entered 28 Feb 2002

Oko 73D6 No. 6034 (NORAD 17031, COSPAR 1986-078A) was a SU satellite that re-entered Earth's atmosphere on 28 Feb 2002, launched on 15 Oct 1986 on the Oko mission. It was operated by PVO as part of the Oko E 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.

1986

launched

2002

re-entered

years on orbit

1,250

kg mass

Lifecycle

Launched15 Oct 1986 · on the Oko mission

Operational1 May 1992 · entered service

Retired1 May 1992 · end of operational service

Re-entered28 Feb 2002 · atmospheric re-entry — object destroyed

Specifications

NORAD ID17031

COSPAR1986-078A

TypeSatellite

OperatorPVO

Country / StateSU

ManufacturerNPOL/KOMET

BusOko

Mass1,250 kg (1,150 kg dry)

ProgrammeOko E

CategoryEW

OrbitHEO (HEO/M)

Altitude634 × 39,736 km

Inclination63.1°

Frequently asked questions

What happened to Oko 73D6 No. 6034?

Oko 73D6 No. 6034 re-entered Earth's atmosphere on 28 Feb 2002, ending a mission that began with its launch in 1986. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Oko 73D6 No. 6034 re-enter the atmosphere?

Oko 73D6 No. 6034 re-entered on 28 Feb 2002, according to Orbital Radar's historical catalogue records.

Who operated and built Oko 73D6 No. 6034?

Oko 73D6 No. 6034 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? →