Zenit-2 No. 76L

Re-entered 2 Jul 1969

Zenit-2 No. 76L (NORAD 3991, COSPAR 1969-054A) was a SU satellite that re-entered Earth's atmosphere on 2 Jul 1969, launched on 24 Jun 1969 on the Zenit-2 No. 76 mission. It was operated by TSUKOS as part of the Zenit-2 B programme. The spacecraft was built by TSKBE3 on the Zenit-2 bus, with a mass of 2,100 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.

1969

launched

1969

re-entered

years on orbit

2,100

kg mass

Lifecycle

Launched24 Jun 1969 · on the Zenit-2 No. 76 mission

Operational2 Jul 1969 · entered service

Retired2 Jul 1969 · end of operational service

Re-entered2 Jul 1969 · atmospheric re-entry — object destroyed

Specifications

NORAD ID3991

COSPAR1969-054A

TypeSatellite

OperatorTSUKOS

Country / StateSU

ManufacturerTSKBE3

BusZenit-2

Mass2,100 kg

ProgrammeZenit-2 B

CategoryIMG

OrbitLEO (LLEO/I)

Altitude187 × 257 km

Inclination51.8°

Frequently asked questions

What happened to Zenit-2 No. 76L?

Zenit-2 No. 76L re-entered Earth's atmosphere on 2 Jul 1969, ending a mission that began with its launch in 1969. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Zenit-2 No. 76L re-enter the atmosphere?

Zenit-2 No. 76L re-entered on 2 Jul 1969, according to Orbital Radar's historical catalogue records.

Who operated and built Zenit-2 No. 76L?

Zenit-2 No. 76L 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.

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