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Nauka 8KS No. 1L

Re-entered 25 May 1971

Nauka 8KS No. 1L (NORAD 5228, COSPAR 1971-040C) was a SU satellite that re-entered Earth's atmosphere on 25 May 1971, launched on 6 May 1971 on the Zenit-2M mission. It was operated by TSKBE3 as part of the Nauka 8KS programme. The spacecraft was built by TSKBE3 on the Nauka bus, with a mass of 630 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.

1971
launched
1971
re-entered
0
years on orbit
630
kg mass

Lifecycle

Launched6 May 1971 · on the Zenit-2M mission
Operational17 May 1971 · entered service
Retired17 May 1971 · end of operational service
Re-entered25 May 1971 · atmospheric re-entry — object destroyed

Specifications

NORAD ID5228
COSPAR1971-040C
TypeSatellite
OperatorTSKBE3
Country / StateSU
ManufacturerTSKBE3
BusNauka
Mass630 kg
ProgrammeNauka 8KS
CategorySCI
OrbitLEO (LLEO/I)
Altitude195 × 257 km
Inclination64.9°

Frequently asked questions

What happened to Nauka 8KS No. 1L?

Nauka 8KS No. 1L re-entered Earth's atmosphere on 25 May 1971, ending a mission that began with its launch in 1971. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Nauka 8KS No. 1L re-enter the atmosphere?

Nauka 8KS No. 1L re-entered on 25 May 1971, according to Orbital Radar's historical catalogue records.

Who operated and built Nauka 8KS No. 1L?

Nauka 8KS No. 1L was operated by TSKBE3 and built by TSKBE3 (SU).

Launched together

Gektor No. 22LRe-entered 1971
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.