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DS-P1-Yu No. 42L

Re-entered 22 Jan 1971

DS-P1-Yu No. 42L (NORAD 4573, COSPAR 1970-081A) was a SU satellite that re-entered Earth's atmosphere on 22 Jan 1971, launched on 8 Oct 1970 on the DS-P1-Yu No. 42 mission. It was operated by PVO as part of the DS-P1-Yu A 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

Launched8 Oct 1970 · on the DS-P1-Yu No. 42 mission
Operational22 Jan 1971 · entered service
Retired22 Jan 1971 · end of operational service
Re-entered22 Jan 1971 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4573
COSPAR1970-081A
TypeSatellite
OperatorPVO
Country / StateSU
ManufacturerYUZH
BusDS-P1
Mass200 kg
ProgrammeDS-P1-Yu A
CategoryCAL
OrbitLEO (LLEO/I)
Altitude256 × 454 km
Inclination70.9°

Frequently asked questions

What happened to DS-P1-Yu No. 42L?

DS-P1-Yu No. 42L re-entered Earth's atmosphere on 22 Jan 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-Yu No. 42L re-enter the atmosphere?

DS-P1-Yu No. 42L re-entered on 22 Jan 1971, according to Orbital Radar's historical catalogue records.

Who operated and built DS-P1-Yu No. 42L?

DS-P1-Yu No. 42L 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.