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🛰️ SATELLITE · HISTORICAL RECORD

E-6 No. 12

Re-entered 6 Dec 1965

E-6 No. 12 (NORAD 1810, COSPAR 1965-099A) was a SU satellite that re-entered Earth's atmosphere on 6 Dec 1965, launched on 3 Dec 1965 on the E-6 No. 12 mission. It was operated by OKB1 as part of the E-6 programme. The spacecraft was built by OKB1 on the E-6 DU bus, with a mass of 1,090 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.

1965
launched
1965
re-entered
0
years on orbit
1,090
kg mass

Lifecycle

Launched3 Dec 1965 · on the E-6 No. 12 mission
Operational6 Dec 1965 · entered service
Retired6 Dec 1965 · end of operational service
Re-entered6 Dec 1965 · atmospheric re-entry — object destroyed

Specifications

NORAD ID1810
COSPAR1965-099A
TypeSatellite
OperatorOKB1
Country / StateSU
ManufacturerOKB1
BusE-6 DU
Mass1,090 kg (350 kg dry)
ProgrammeE-6
CategoryPLAN
OrbitLEO (LLEO/I)
Altitude185 × 221 km
Inclination51.9°

Frequently asked questions

What happened to E-6 No. 12?

E-6 No. 12 re-entered Earth's atmosphere on 6 Dec 1965, ending a mission that began with its launch in 1965. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did E-6 No. 12 re-enter the atmosphere?

E-6 No. 12 re-entered on 6 Dec 1965, according to Orbital Radar's historical catalogue records.

Who operated and built E-6 No. 12?

E-6 No. 12 was operated by OKB1 and built by OKB1 (SU).

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