HomeLibraryRe-entered SatellitesDS-U1-R No. 1
🛰️ SATELLITE · HISTORICAL RECORD

DS-U1-R No. 1

Re-entered 22 Jun 1970

DS-U1-R No. 1 (NORAD 4380, COSPAR 1970-035A) was a SU satellite that re-entered Earth's atmosphere on 22 Jun 1970, launched on 24 Apr 1970 on the DS-U1-R No. 1 mission. It was operated by YUZH as part of the DS-U1-R programme. The spacecraft was built by YUZH on the DS-U1 bus, with a mass of 315 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
0
years on orbit
315
kg mass

Lifecycle

Launched24 Apr 1970 · on the DS-U1-R No. 1 mission
Operational20 Jun 1970 · entered service
Retired20 Jun 1970 · end of operational service
Re-entered22 Jun 1970 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4380
COSPAR1970-035A
TypeSatellite
OperatorYUZH
Country / StateSU
ManufacturerYUZH
BusDS-U1
Mass315 kg
ProgrammeDS-U1-R
CategoryAST
OrbitLEO (LLEO/I)
Altitude247 × 391 km
Inclination48.4°

Frequently asked questions

What happened to DS-U1-R No. 1?

DS-U1-R No. 1 re-entered Earth's atmosphere on 22 Jun 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-U1-R No. 1 re-enter the atmosphere?

DS-U1-R No. 1 re-entered on 22 Jun 1970, according to Orbital Radar's historical catalogue records.

Who operated and built DS-U1-R No. 1?

DS-U1-R No. 1 was operated by YUZH and built by YUZH (SU).

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