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Tselina-O No. 2L

Re-entered 24 Feb 1973

Tselina-O No. 2L (NORAD 3100, COSPAR 1968-006A) was a SU satellite that re-entered Earth's atmosphere on 24 Feb 1973, launched on 19 Jan 1968 on the Tselina-O mission. It was operated by TSN108 as part of the Tselina-O programme. The spacecraft was built by YUZH on the Tselina-O 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.

1968
launched
1973
re-entered
5
years on orbit
434
kg mass

Lifecycle

Launched19 Jan 1968 · on the Tselina-O mission
Operational1 Jan 1970 · entered service
Retired1 Jan 1970 · end of operational service
Re-entered24 Feb 1973 · atmospheric re-entry — object destroyed

Specifications

NORAD ID3100
COSPAR1968-006A
TypeSatellite
OperatorTSN108
Country / StateSU
ManufacturerYUZH
BusTselina-O
Mass434 kg
ProgrammeTselina-O
CategorySIG
OrbitLEO (LLEO/I)
Altitude516 × 536 km
Inclination74.0°

Frequently asked questions

What happened to Tselina-O No. 2L?

Tselina-O No. 2L re-entered Earth's atmosphere on 24 Feb 1973, ending a mission that began with its launch in 1968. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Tselina-O No. 2L re-enter the atmosphere?

Tselina-O No. 2L re-entered on 24 Feb 1973, according to Orbital Radar's historical catalogue records.

Who operated and built Tselina-O No. 2L?

Tselina-O No. 2L 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.