Tselina-OM No. 4L

Re-entered 6 Apr 1980

Tselina-OM No. 4L (NORAD 4955, COSPAR 1971-013A) was a SU satellite that re-entered Earth's atmosphere on 6 Apr 1980, launched on 17 Feb 1971 on the Tselina-OM mission. It was operated by TSN108 as part of the Tselina-OM programme. The spacecraft was built by YUZH on the Tselina-OM bus, with a mass of 434 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.

1971

launched

1980

re-entered

years on orbit

434

kg mass

Lifecycle

Launched17 Feb 1971 · on the Tselina-OM mission

Operational1 Jan 1971 · entered service

Retired1 Jan 1971 · end of operational service

Re-entered6 Apr 1980 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4955

COSPAR1971-013A

TypeSatellite

OperatorTSN108

Country / StateSU

ManufacturerYUZH

BusTselina-OM

Mass434 kg

ProgrammeTselina-OM

CategorySIG

OrbitLEO (LLEO/I)

Altitude527 × 543 km

Inclination74.0°

Frequently asked questions

What happened to Tselina-OM No. 4L?

Tselina-OM No. 4L re-entered Earth's atmosphere on 6 Apr 1980, ending a mission that began with its launch in 1971. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Tselina-OM No. 4L re-enter the atmosphere?

Tselina-OM No. 4L re-entered on 6 Apr 1980, according to Orbital Radar's historical catalogue records.

Who operated and built Tselina-OM No. 4L?

Tselina-OM No. 4L was operated by TSN108 and built by YUZH (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: Tselina-OM → What is space debris? →