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DS-P1-Yu No. 4L

Re-entered 12 Jul 1966

DS-P1-Yu No. 4L (NORAD 1846, COSPAR 1965-107A) was a SU satellite that re-entered Earth's atmosphere on 12 Jul 1966, launched on 21 Dec 1965 on the DS-P1-Yu No. 4 mission. It was operated by YUZH / 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.

1965
launched
1966
re-entered
1
year on orbit
200
kg mass

Lifecycle

Launched21 Dec 1965 · on the DS-P1-Yu No. 4 mission
Operational11 Mar 1966 · entered service
Retired11 Mar 1966 · end of operational service
Re-entered12 Jul 1966 · atmospheric re-entry — object destroyed

Specifications

NORAD ID1846
COSPAR1965-107A
TypeSatellite
OperatorYUZH / PVO
Country / StateSU
ManufacturerYUZH
BusDS-P1
Mass200 kg
ProgrammeDS-P1-Yu A
CategoryCAL
OrbitLEO (LLEO/I)
Altitude255 × 510 km
Inclination48.8°

Frequently asked questions

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

DS-P1-Yu No. 4L re-entered Earth's atmosphere on 12 Jul 1966, ending a mission that began with its launch in 1965. 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. 4L re-enter the atmosphere?

DS-P1-Yu No. 4L re-entered on 12 Jul 1966, according to Orbital Radar's historical catalogue records.

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

DS-P1-Yu No. 4L was operated by YUZH / PVO and built by YUZH (SU).

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