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🛰️ SATELLITE · HISTORICAL RECORD

Gektor No. 21L

Re-entered 13 Oct 1970

Gektor No. 21L (NORAD 4561, COSPAR 1970-078A) was a SU satellite that re-entered Earth's atmosphere on 13 Oct 1970, launched on 1 Oct 1970 on the Zenit-2M mission. It was operated by GUKOSR as part of the Zenit-2M programme. The spacecraft was built by TSKBE3 on the Zenit-2M bus, with a mass of 2,200 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.

1970
launched
1970
re-entered
0
years on orbit
2,200
kg mass

Lifecycle

Launched1 Oct 1970 · on the Zenit-2M mission
Operational13 Oct 1970 · entered service
Retired13 Oct 1970 · end of operational service
Re-entered13 Oct 1970 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4561
COSPAR1970-078A
TypeSatellite
OperatorGUKOSR
Country / StateSU
ManufacturerTSKBE3
BusZenit-2M
Mass2,200 kg
ProgrammeZenit-2M
CategoryIMG
OrbitLEO (LLEO/I)
Altitude204 × 295 km
Inclination66.0°

Frequently asked questions

What happened to Gektor No. 21L?

Gektor No. 21L re-entered Earth's atmosphere on 13 Oct 1970, ending a mission that began with its launch in 1970. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Gektor No. 21L re-enter the atmosphere?

Gektor No. 21L re-entered on 13 Oct 1970, according to Orbital Radar's historical catalogue records.

Who operated and built Gektor No. 21L?

Gektor No. 21L was operated by GUKOSR and built by TSKBE3 (SU).

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