Kosmos-345

Re-entered 28 May 1970

Kosmos-345 (NORAD 4403, COSPAR 1970-039A) was a SU satellite that re-entered Earth's atmosphere on 28 May 1970, launched on 20 May 1970 on the Zenit-4 No. 77 mission. It is catalogued as Zenit-4 No. 77L. It was operated by GUKOS RVSN 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.

1970

launched

1970

re-entered

years on orbit

2,200

kg mass

Lifecycle

Launched20 May 1970 · on the Zenit-4 No. 77 mission

Operational28 May 1970 · entered service

Retired28 May 1970 · end of operational service

Re-entered28 May 1970 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4403

COSPAR1970-039A

TypeSatellite

OperatorGUKOS RVSN

Country / StateSU

ManufacturerTSKBE3

BusZenit-4

Mass2,200 kg

ProgrammeZenit-4

CategoryIMG

OrbitLEO (LLEO/I)

Altitude191 × 264 km

Inclination51.8°

Frequently asked questions

What happened to Kosmos-345?

Kosmos-345 re-entered Earth's atmosphere on 28 May 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 Kosmos-345 re-enter the atmosphere?

Kosmos-345 re-entered on 28 May 1970, according to Orbital Radar's historical catalogue records.

Who operated and built Kosmos-345?

Kosmos-345 was operated by GUKOS RVSN and built by TSKBE3 (SU).

Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-10-05.

Browse the live satellite directory → Re-entered satellites archive → Launch record: Zenit-4 No. 77 → What is space debris? →