Soyuz 7K-T(A9) No. 66

Re-entered 8 Feb 1977

Soyuz 7K-T(A9) No. 66 (NORAD 9804, COSPAR 1977-008A) was a SU satellite that re-entered Earth's atmosphere on 8 Feb 1977, launched on 7 Feb 1977 on the Soyuz 7K-T(A9) No. 66 mission. It was operated by NPOE as part of the 7K-TA programme. The spacecraft was built by NPOE on the 7K-T A9 bus, with a mass of 2,850 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.

1977

launched

1977

re-entered

years on orbit

2,850

kg mass

Lifecycle

Launched7 Feb 1977 · on the Soyuz 7K-T(A9) No. 66 mission

Operational25 Feb 1977 · entered service

Retired25 Feb 1977 · end of operational service

Re-entered8 Feb 1977 · atmospheric re-entry — object destroyed

Specifications

NORAD ID9804

COSPAR1977-008A

TypeSatellite

OperatorNPOE

Country / StateSU

ManufacturerNPOE

Bus7K-T A9

Mass2,850 kg

Programme7K-TA

CategorySS

OrbitLEO (LLEO/I)

Altitude246 × 261 km

Inclination51.6°

Frequently asked questions

What happened to Soyuz 7K-T(A9) No. 66?

Soyuz 7K-T(A9) No. 66 re-entered Earth's atmosphere on 8 Feb 1977, ending a mission that began with its launch in 1977. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Soyuz 7K-T(A9) No. 66 re-enter the atmosphere?

Soyuz 7K-T(A9) No. 66 re-entered on 8 Feb 1977, according to Orbital Radar's historical catalogue records.

Who operated and built Soyuz 7K-T(A9) No. 66?

Soyuz 7K-T(A9) No. 66 was operated by NPOE and built by NPOE (SU).

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

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