DS-P1-M No. 4L

Retired 1973

DS-P1-M No. 4L (NORAD 6206, COSPAR 1972-074A) is a retired SU satellite, withdrawn from service around 1 Jan 1973, launched on 29 Sep 1972 on the DS-P1-M No. 4 mission. It was operated by PKO as part of the DS-P1-M programme. The spacecraft was built by YUZH on the DS-P1 bus, with a mass of 643 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.

1972

launched

1973

retired

years on orbit

643

kg mass

Lifecycle

Launched29 Sep 1972 · on the DS-P1-M No. 4 mission

Operational1 Jan 1973 · entered service

Retired1 Jan 1973 · end of operational service

StatusOn orbit (not live-tracked)

Specifications

NORAD ID6206

COSPAR1972-074A

TypeSatellite

OperatorPKO

Country / StateSU

ManufacturerYUZH

BusDS-P1

Mass643 kg

ProgrammeDS-P1-M

CategoryTARG

OrbitLEO (LEO/I)

Altitude976 × 1,008 km

Inclination65.8°

Frequently asked questions

What happened to DS-P1-M No. 4L?

DS-P1-M No. 4L was retired from service around 1 Jan 1973 after launching in 1972. It is no longer operational but remains catalogued.

Who operated and built DS-P1-M No. 4L?

DS-P1-M No. 4L was operated by PKO and built by YUZH (SU).

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

Browse the live satellite directory → Re-entered satellites archive → Launch record: DS-P1-M No. 4 → What is space debris? →