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DS-P1-I No. 9L

Re-entered 13 Oct 1971

DS-P1-I No. 9L (NORAD 4536, COSPAR 1970-073A) was a SU satellite that re-entered Earth's atmosphere on 13 Oct 1971, launched on 16 Sep 1970 on the DS-P1-I No. 9 mission. It was operated by PVO as part of the DS-P1-I programme. The spacecraft was built by YUZH on the DS-P1 bus, with a mass of 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
1971
re-entered
1
year on orbit
200
kg mass

Lifecycle

Launched16 Sep 1970 · on the DS-P1-I No. 9 mission
Operational24 Nov 1970 · entered service
Retired24 Nov 1970 · end of operational service
Re-entered13 Oct 1971 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4536
COSPAR1970-073A
TypeSatellite
OperatorPVO
Country / StateSU
ManufacturerYUZH
BusDS-P1
Mass200 kg
ProgrammeDS-P1-I
CategoryCAL
OrbitLEO (LLEO/I)
Altitude265 × 799 km
Inclination71.0°

Frequently asked questions

What happened to DS-P1-I No. 9L?

DS-P1-I No. 9L re-entered Earth's atmosphere on 13 Oct 1971, 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 DS-P1-I No. 9L re-enter the atmosphere?

DS-P1-I No. 9L re-entered on 13 Oct 1971, according to Orbital Radar's historical catalogue records.

Who operated and built DS-P1-I No. 9L?

DS-P1-I No. 9L was operated by PVO and built by YUZH (SU).

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