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🛰️ SATELLITE · HISTORICAL RECORD

DSCS II B-5

Re-entered 26 May 1975

DSCS II B-5 (NORAD 7807, COSPAR 1975-040A) was a US satellite that re-entered Earth's atmosphere on 26 May 1975, launched on 20 May 1975 on the DSCS II B-5 mission. It was operated by SAMSO / DCA as part of the DSCS programme. The spacecraft was built by TRW on the DSCS II bus, with a mass of 535 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.

1975
launched
1975
re-entered
0
years on orbit
535
kg mass

Lifecycle

Launched20 May 1975 · on the DSCS II B-5 mission
Operational26 May 1975 · entered service
Retired26 May 1975 · end of operational service
Re-entered26 May 1975 · atmospheric re-entry — object destroyed

Specifications

NORAD ID7807
COSPAR1975-040A
TypeSatellite
OperatorSAMSO / DCA
Country / StateUS
ManufacturerTRW
BusDSCS II
Mass535 kg (500 kg dry)
ProgrammeDSCS
CategoryCOM
OrbitLEO (LLEO/I)
Altitude151 × 236 km
Inclination28.6°

Frequently asked questions

What happened to DSCS II B-5?

DSCS II B-5 re-entered Earth's atmosphere on 26 May 1975, ending a mission that began with its launch in 1975. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did DSCS II B-5 re-enter the atmosphere?

DSCS II B-5 re-entered on 26 May 1975, according to Orbital Radar's historical catalogue records.

Who operated and built DSCS II B-5?

DSCS II B-5 was operated by SAMSO / DCA and built by TRW (US).

Launched together

DSCS II B-6Re-entered 1975
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.