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🛰️ SATELLITE · HISTORICAL RECORD

Kobal't No. 517

Re-entered 20 Aug 1988

Kobal't No. 517 (NORAD 19258, COSPAR 1988-054A) was a SU satellite that re-entered Earth's atmosphere on 20 Aug 1988, launched on 22 Jun 1988 on the Kobal't mission. It was operated by UNKS as part of the Kobal't programme. The spacecraft was built by TSSKB on the Yantar'-4K2 bus, with a mass of 2,886 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.

1988
launched
1988
re-entered
0
years on orbit
2,886
kg mass

Lifecycle

Launched22 Jun 1988 · on the Kobal't mission
Operational20 Aug 1988 · entered service
Retired20 Aug 1988 · end of operational service
Re-entered20 Aug 1988 · atmospheric re-entry — object destroyed

Specifications

NORAD ID19258
COSPAR1988-054A
TypeSatellite
OperatorUNKS
Country / StateSU
ManufacturerTSSKB
BusYantar'-4K2
Mass2,886 kg
ProgrammeKobal't
CategoryIMG
OrbitLEO (LLEO/I)
Altitude189 × 356 km
Inclination64.8°

Frequently asked questions

What happened to Kobal't No. 517?

Kobal't No. 517 re-entered Earth's atmosphere on 20 Aug 1988, ending a mission that began with its launch in 1988. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Kobal't No. 517 re-enter the atmosphere?

Kobal't No. 517 re-entered on 20 Aug 1988, according to Orbital Radar's historical catalogue records.

Who operated and built Kobal't No. 517?

Kobal't No. 517 was operated by UNKS and built by TSSKB (SU).

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