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DS-P1-Yu No. 37L

Re-entered 29 Dec 1971

DS-P1-Yu No. 37L (NORAD 5177, COSPAR 1971-037A) was a SU satellite that re-entered Earth's atmosphere on 29 Dec 1971, launched on 24 Apr 1971 on the DS-P1-Yu No. 37 mission. It was operated by PVO as part of the DS-P1-Yu B 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.

1971
launched
1971
re-entered
0
years on orbit
200
kg mass

Lifecycle

Launched24 Apr 1971 · on the DS-P1-Yu No. 37 mission
Operational22 Dec 1971 · entered service
Retired22 Dec 1971 · end of operational service
Re-entered29 Dec 1971 · atmospheric re-entry — object destroyed

Specifications

NORAD ID5177
COSPAR1971-037A
TypeSatellite
OperatorPVO
Country / StateSU
ManufacturerYUZH
BusDS-P1
Mass200 kg
ProgrammeDS-P1-Yu B
CategoryCAL
OrbitLEO (LEO/I)
Altitude197 × 1,383 km
Inclination81.8°

Frequently asked questions

What happened to DS-P1-Yu No. 37L?

DS-P1-Yu No. 37L re-entered Earth's atmosphere on 29 Dec 1971, ending a mission that began with its launch in 1971. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did DS-P1-Yu No. 37L re-enter the atmosphere?

DS-P1-Yu No. 37L re-entered on 29 Dec 1971, according to Orbital Radar's historical catalogue records.

Who operated and built DS-P1-Yu No. 37L?

DS-P1-Yu No. 37L 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.