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🛰️ SATELLITE · HISTORICAL RECORD

IS-M No. 705

Re-entered 19 May 1978

IS-M No. 705 (NORAD 10904, COSPAR 1978-050A) was a SU satellite that re-entered Earth's atmosphere on 19 May 1978, launched on 19 May 1978 on the IS mission. It was operated by PKO as part of the IS 5V91AT programme. The spacecraft was built by KOMET on the IS bus, with a mass of 1,400 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.

1978
launched
1978
re-entered
0
years on orbit
1,400
kg mass

Lifecycle

Launched19 May 1978 · on the IS mission
Operational19 May 1978 · entered service
Retired19 May 1978 · end of operational service
Re-entered19 May 1978 · atmospheric re-entry — object destroyed

Specifications

NORAD ID10904
COSPAR1978-050A
TypeSatellite
OperatorPKO
Country / StateSU
ManufacturerKOMET
BusIS
Mass1,400 kg
ProgrammeIS 5V91AT
CategoryWEAPON
OrbitLEO (LEO/I)
Altitude964 × 1,383 km
Inclination65.8°

Frequently asked questions

What happened to IS-M No. 705?

IS-M No. 705 re-entered Earth's atmosphere on 19 May 1978, ending a mission that began with its launch in 1978. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did IS-M No. 705 re-enter the atmosphere?

IS-M No. 705 re-entered on 19 May 1978, according to Orbital Radar's historical catalogue records.

Who operated and built IS-M No. 705?

IS-M No. 705 was operated by PKO and built by KOMET (SU).

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