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Zenit-4 No. 28L

Re-entered 20 Apr 1967

Zenit-4 No. 28L (NORAD 2750, COSPAR 1967-033A) was a SU satellite that re-entered Earth's atmosphere on 20 Apr 1967, launched on 12 Apr 1967 on the Zenit-4 No. 28 mission. It was operated by TSUKOS as part of the Zenit-4 programme. The spacecraft was built by TSKBE3 on the Zenit-4 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.

1967
launched
1967
re-entered
0
years on orbit
2,200
kg mass

Lifecycle

Launched12 Apr 1967 · on the Zenit-4 No. 28 mission
Operational20 Apr 1967 · entered service
Retired20 Apr 1967 · end of operational service
Re-entered20 Apr 1967 · atmospheric re-entry — object destroyed

Specifications

NORAD ID2750
COSPAR1967-033A
TypeSatellite
OperatorTSUKOS
Country / StateSU
ManufacturerTSKBE3
BusZenit-4
Mass2,200 kg
ProgrammeZenit-4
CategoryIMG
OrbitLEO (LLEO/I)
Altitude202 × 271 km
Inclination51.8°

Frequently asked questions

What happened to Zenit-4 No. 28L?

Zenit-4 No. 28L re-entered Earth's atmosphere on 20 Apr 1967, ending a mission that began with its launch in 1967. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Zenit-4 No. 28L re-enter the atmosphere?

Zenit-4 No. 28L re-entered on 20 Apr 1967, according to Orbital Radar's historical catalogue records.

Who operated and built Zenit-4 No. 28L?

Zenit-4 No. 28L was operated by TSUKOS and built by TSKBE3 (SU).

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