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DS-P1-Yu No. 28L

Re-entered 23 Jan 1970

DS-P1-Yu No. 28L (NORAD 4136, COSPAR 1969-090A) was a SU satellite that re-entered Earth's atmosphere on 23 Jan 1970, launched on 18 Oct 1969 on the DS-P1-Yu No. 28 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.

1969
launched
1970
re-entered
1
year on orbit
200
kg mass

Lifecycle

Launched18 Oct 1969 · on the DS-P1-Yu No. 28 mission
Operational23 Jan 1970 · entered service
Retired23 Jan 1970 · end of operational service
Re-entered23 Jan 1970 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4136
COSPAR1969-090A
TypeSatellite
OperatorPVO
Country / StateSU
ManufacturerYUZH
BusDS-P1
Mass200 kg
ProgrammeDS-P1-Yu A
CategoryCAL
OrbitLEO (LLEO/I)
Altitude259 × 427 km
Inclination71.0°

Frequently asked questions

What happened to DS-P1-Yu No. 28L?

DS-P1-Yu No. 28L re-entered Earth's atmosphere on 23 Jan 1970, ending a mission that began with its launch in 1969. 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. 28L re-enter the atmosphere?

DS-P1-Yu No. 28L re-entered on 23 Jan 1970, according to Orbital Radar's historical catalogue records.

Who operated and built DS-P1-Yu No. 28L?

DS-P1-Yu No. 28L 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.