Soyuz 7K-STM No. 77

Re-entered 15 Aug 1998

Soyuz 7K-STM No. 77 (NORAD 25429, COSPAR 1998-047A) was a RU satellite that re-entered Earth's atmosphere on 15 Aug 1998, launched on 13 Aug 1998 on the Soyuz 7K-STM No. 77 mission. It was operated by RKKE as part of the 7K-STM programme. The spacecraft was built by PROGT on the 7K-STM bus, with a mass of 2,620 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.

1998

launched

1998

re-entered

years on orbit

2,620

kg mass

Lifecycle

Launched13 Aug 1998 · on the Soyuz 7K-STM No. 77 mission

Operational28 Feb 1999 · entered service

Retired28 Feb 1999 · end of operational service

Re-entered15 Aug 1998 · atmospheric re-entry — object destroyed

Specifications

NORAD ID25429

COSPAR1998-047A

TypeSatellite

OperatorRKKE

Country / StateRU

ManufacturerPROGT

Bus7K-STM

Mass2,620 kg

Programme7K-STM

CategorySS

OrbitLEO (LLEO/I)

Altitude360 × 370 km

Inclination51.7°

Frequently asked questions

What happened to Soyuz 7K-STM No. 77?

Soyuz 7K-STM No. 77 re-entered Earth's atmosphere on 15 Aug 1998, ending a mission that began with its launch in 1998. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Soyuz 7K-STM No. 77 re-enter the atmosphere?

Soyuz 7K-STM No. 77 re-entered on 15 Aug 1998, according to Orbital Radar's historical catalogue records.

Who operated and built Soyuz 7K-STM No. 77?

Soyuz 7K-STM No. 77 was operated by RKKE and built by PROGT (RU).

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

Browse the live satellite directory → Re-entered satellites archive → Launch record: Soyuz 7K-STM No. 77 → What is space debris? →