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🛰️ SATELLITE · HISTORICAL RECORD

Bion No. 2L

Re-entered 12 Nov 1974

Bion No. 2L (NORAD 7478, COSPAR 1974-080A) was a SU satellite that re-entered Earth's atmosphere on 12 Nov 1974, launched on 22 Oct 1974 on the Bion No. 2 mission. It was operated by IMBP / TSSKB as part of the Bion programme. The spacecraft was built by TSSKB on the Bion bus, with a mass of 2,040 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.

1974
launched
1974
re-entered
0
years on orbit
2,040
kg mass

Lifecycle

Launched22 Oct 1974 · on the Bion No. 2 mission
Operational12 Nov 1974 · entered service
Retired12 Nov 1974 · end of operational service
Re-entered12 Nov 1974 · atmospheric re-entry — object destroyed

Specifications

NORAD ID7478
COSPAR1974-080A
TypeSatellite
OperatorIMBP / TSSKB
Country / StateSU
ManufacturerTSSKB
BusBion
Mass2,040 kg
ProgrammeBion
CategoryBIO
OrbitLEO (LLEO/I)
Altitude214 × 362 km
Inclination62.8°

Frequently asked questions

What happened to Bion No. 2L?

Bion No. 2L re-entered Earth's atmosphere on 12 Nov 1974, ending a mission that began with its launch in 1974. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Bion No. 2L re-enter the atmosphere?

Bion No. 2L re-entered on 12 Nov 1974, according to Orbital Radar's historical catalogue records.

Who operated and built Bion No. 2L?

Bion No. 2L was operated by IMBP / TSSKB and built by TSSKB (SU).

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