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🛰️ SATELLITE · HISTORICAL RECORD

4V-1 No. 660

Re-entered 8 Jun 1975

4V-1 No. 660 (NORAD 7915, COSPAR 1975-050A) was a SU satellite that re-entered Earth's atmosphere on 8 Jun 1975, launched on 8 Jun 1975 on the 4V-1 No. 660 mission. It was operated by IKI / BABTS as part of the 4V-1 programme. The spacecraft was built by NPOL on the Venera bus, with a mass of 3,376 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.

1975
launched
1975
re-entered
0
years on orbit
3,376
kg mass

Lifecycle

Launched8 Jun 1975 · on the 4V-1 No. 660 mission
Operational21 Jun 1976 · entered service
Retired21 Jun 1976 · end of operational service
Re-entered8 Jun 1975 · atmospheric re-entry — object destroyed

Specifications

NORAD ID7915
COSPAR1975-050A
TypeSatellite
OperatorIKI / BABTS
Country / StateSU
ManufacturerNPOL
BusVenera
Mass3,376 kg (3,000 kg dry)
Programme4V-1
CategoryPLAN
OrbitHEO (EEO)
Inclination51.5°

Frequently asked questions

What happened to 4V-1 No. 660?

4V-1 No. 660 re-entered Earth's atmosphere on 8 Jun 1975, ending a mission that began with its launch in 1975. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did 4V-1 No. 660 re-enter the atmosphere?

4V-1 No. 660 re-entered on 8 Jun 1975, according to Orbital Radar's historical catalogue records.

Who operated and built 4V-1 No. 660?

4V-1 No. 660 was operated by IKI / BABTS and built by NPOL (SU).

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