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HEXAGON SV-11

Re-entered 1 Apr 1976

HEXAGON SV-11 (NORAD 8467, COSPAR 1975-114A) was a US satellite that re-entered Earth's atmosphere on 1 Apr 1976, launched on 4 Dec 1975 on the HEXAGON SV-11 mission. It was operated by NRO / SAFSP as part of the Hex II programme. The spacecraft was built by LMSC on the KH-9 bus, with a mass of 7,624 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.

1975
launched
1976
re-entered
1
year on orbit
7,624
kg mass

Lifecycle

Launched4 Dec 1975 · on the HEXAGON SV-11 mission
Operational1 Apr 1976 · entered service
Retired1 Apr 1976 · end of operational service
Re-entered1 Apr 1976 · atmospheric re-entry — object destroyed

Specifications

NORAD ID8467
COSPAR1975-114A
TypeSatellite
OperatorNRO / SAFSP
Country / StateUS
ManufacturerLMSC
BusKH-9
Mass7,624 kg (6,099 kg dry)
ProgrammeHex II
CategoryIMG
OrbitLEO (LLEO/S)
Altitude153 × 229 km
Inclination96.3°

Frequently asked questions

What happened to HEXAGON SV-11?

HEXAGON SV-11 re-entered Earth's atmosphere on 1 Apr 1976, ending a mission that began with its launch in 1975. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did HEXAGON SV-11 re-enter the atmosphere?

HEXAGON SV-11 re-entered on 1 Apr 1976, according to Orbital Radar's historical catalogue records.

Who operated and built HEXAGON SV-11?

HEXAGON SV-11 was operated by NRO / SAFSP and built by LMSC (US).

Launched together

S3-2Re-entered 1978
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.