DS-P1 No. 4

Re-entered 21 Nov 1964

DS-P1 No. 4 (NORAD 757, COSPAR 1964-010A) was a SU satellite that re-entered Earth's atmosphere on 21 Nov 1964, launched on 27 Feb 1964 on the DS-P1 No. 4 mission. It was operated by OKB586 / PVO as part of the DS-P1 programme. The spacecraft was built by OKB586 on the DS-P1 bus, with a mass of 240 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.

1964

launched

1964

re-entered

years on orbit

240

kg mass

Lifecycle

Launched27 Feb 1964 · on the DS-P1 No. 4 mission

Operational21 Nov 1964 · entered service

Retired21 Nov 1964 · end of operational service

Re-entered21 Nov 1964 · atmospheric re-entry — object destroyed

Specifications

NORAD ID757

COSPAR1964-010A

TypeSatellite

OperatorOKB586 / PVO

Country / StateSU

ManufacturerOKB586

BusDS-P1

Mass240 kg

ProgrammeDS-P1

CategoryCAL

OrbitLEO (LLEO/I)

Altitude260 × 494 km

Inclination49.0°

Frequently asked questions

What happened to DS-P1 No. 4?

DS-P1 No. 4 re-entered Earth's atmosphere on 21 Nov 1964, ending a mission that began with its launch in 1964. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did DS-P1 No. 4 re-enter the atmosphere?

DS-P1 No. 4 re-entered on 21 Nov 1964, according to Orbital Radar's historical catalogue records.

Who operated and built DS-P1 No. 4?

DS-P1 No. 4 was operated by OKB586 / PVO and built by OKB586 (SU).

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

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