DS-P1-Yu No. 25L

Re-entered 1 Jul 1970

DS-P1-Yu No. 25L (NORAD 4299, COSPAR 1970-004A) was a SU satellite that re-entered Earth's atmosphere on 1 Jul 1970, launched on 15 Jan 1970 on the DS-P1-Yu No. 25 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.

1970

launched

1970

re-entered

years on orbit

200

kg mass

Lifecycle

Launched15 Jan 1970 · on the DS-P1-Yu No. 25 mission

Operational1 Jul 1970 · entered service

Retired1 Jul 1970 · end of operational service

Re-entered1 Jul 1970 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4299

COSPAR1970-004A

TypeSatellite

OperatorPVO

Country / StateSU

ManufacturerYUZH

BusDS-P1

Mass200 kg

ProgrammeDS-P1-Yu B

CategoryCAL

OrbitLEO (LEO/I)

Altitude196 × 1,371 km

Inclination82.0°

Frequently asked questions

What happened to DS-P1-Yu No. 25L?

DS-P1-Yu No. 25L re-entered Earth's atmosphere on 1 Jul 1970, 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. 25L re-enter the atmosphere?

DS-P1-Yu No. 25L re-entered on 1 Jul 1970, according to Orbital Radar's historical catalogue records.

Who operated and built DS-P1-Yu No. 25L?

DS-P1-Yu No. 25L 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.

Browse the live satellite directory → Re-entered satellites archive → Launch record: DS-P1-Yu No. 25 → What is space debris? →