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Nauka 1KS No. 3L

Re-entered 4 Nov 1970

Nauka 1KS No. 3L (NORAD 4585, COSPAR 1970-080E) was a SU satellite that re-entered Earth's atmosphere on 4 Nov 1970, launched on 8 Oct 1970 on the Zenit-2M (Bion) mission. It was operated by TSKBE3 as part of the Nauka 1KS programme. The spacecraft was built by TSKBE3 on the Nauka? bus, with a mass of 810 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
810
kg mass

Lifecycle

Launched8 Oct 1970 · on the Zenit-2M (Bion) mission
Operational14 Oct 1970 · entered service
Retired14 Oct 1970 · end of operational service
Re-entered4 Nov 1970 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4585
COSPAR1970-080E
TypeSatellite
OperatorTSKBE3
Country / StateSU
ManufacturerTSKBE3
BusNauka?
Mass810 kg
ProgrammeNauka 1KS
CategoryAST
OrbitLEO (LLEO/I)
Altitude202 × 386 km
Inclination65.0°

Frequently asked questions

What happened to Nauka 1KS No. 3L?

Nauka 1KS No. 3L re-entered Earth's atmosphere on 4 Nov 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 Nauka 1KS No. 3L re-enter the atmosphere?

Nauka 1KS No. 3L re-entered on 4 Nov 1970, according to Orbital Radar's historical catalogue records.

Who operated and built Nauka 1KS No. 3L?

Nauka 1KS No. 3L was operated by TSKBE3 and built by TSKBE3 (SU).

Launched together

Zenit-2M No. 9L (Bion)Re-entered 1970
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.