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Zenit-4MT No. 1L

Re-entered 6 Jan 1972

Zenit-4MT No. 1L (NORAD 5727, COSPAR 1971-118A) was a SU satellite that re-entered Earth's atmosphere on 6 Jan 1972, launched on 27 Dec 1971 on the Zenit-4MT mission. It was operated by TSKBE3 as part of the Orion programme. The spacecraft was built by TSKBE3 on the Zenit-4MT 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.

1971
launched
1972
re-entered
1
year on orbit
2,200
kg mass

Lifecycle

Launched27 Dec 1971 · on the Zenit-4MT mission
Operational6 Jan 1972 · entered service
Retired6 Jan 1972 · end of operational service
Re-entered6 Jan 1972 · atmospheric re-entry — object destroyed

Specifications

NORAD ID5727
COSPAR1971-118A
TypeSatellite
OperatorTSKBE3
Country / StateSU
ManufacturerTSKBE3
BusZenit-4MT
Mass2,200 kg
ProgrammeOrion
CategoryIMG
OrbitLEO (LLEO/I)
Altitude192 × 258 km
Inclination65.4°

Frequently asked questions

What happened to Zenit-4MT No. 1L?

Zenit-4MT No. 1L re-entered Earth's atmosphere on 6 Jan 1972, 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 Zenit-4MT No. 1L re-enter the atmosphere?

Zenit-4MT No. 1L re-entered on 6 Jan 1972, according to Orbital Radar's historical catalogue records.

Who operated and built Zenit-4MT No. 1L?

Zenit-4MT No. 1L was operated by TSKBE3 and built by TSKBE3 (SU).

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