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🛰️ SATELLITE · HISTORICAL RECORD

Kobal't No. 850

Re-entered 4 Jul 1990

Kobal't No. 850 (NORAD 20604, COSPAR 1990-042A) was a SU satellite that re-entered Earth's atmosphere on 4 Jul 1990, launched on 7 May 1990 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.

1990
launched
1990
re-entered
0
years on orbit
2,886
kg mass

Lifecycle

Launched7 May 1990 · on the Kobal't mission
Operational4 Jul 1990 · entered service
Retired4 Jul 1990 · end of operational service
Re-entered4 Jul 1990 · atmospheric re-entry — object destroyed

Specifications

NORAD ID20604
COSPAR1990-042A
TypeSatellite
OperatorUNKS
Country / StateSU
ManufacturerTSSKB
BusYantar'-4K2
Mass2,886 kg
ProgrammeKobal't
CategoryIMG
OrbitLEO (LLEO/I)
Altitude166 × 338 km
Inclination62.8°

Frequently asked questions

What happened to Kobal't No. 850?

Kobal't No. 850 re-entered Earth's atmosphere on 4 Jul 1990, ending a mission that began with its launch in 1990. 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. 850 re-enter the atmosphere?

Kobal't No. 850 re-entered on 4 Jul 1990, according to Orbital Radar's historical catalogue records.

Who operated and built Kobal't No. 850?

Kobal't No. 850 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.