Kosmos 1851

Russian military early warning satellite. Kosmos 1851 was launched on June 12, 1987 aboard a Molniya 8K78M from Plesetsk. Latest status in GCAT: in orbit.

COSPAR 1987-050ANORAD 18103Soviet Union

Identity

Name in GCAT: Kosmos-1851
Common name: Kosmos 1851
Payload designation: Oko 73D6 No. 6041
Other names: 73D6 No. 190-77-541:RA
International designator: 1987-050A
NORAD catalog number: 18103
GCAT identifier: S18103
UN registration: ST/SG/SER.E/169

Mission

Mission type: Missile early warning
Use: Defense
Program: Oko E
Owner: PVO
Country: Soviet Union
Builder: NPO Lavochkin
Platform (bus): Oko

Launch

Date: June 12, 1987 · 07:40 UTC
Launch record: 1987-050Success
Rocket: Molniya 8K78M
Spaceport: Plesetsk · pad LC43/4

Orbit and fate

Orbit class (GCAT): HEO/M
Perigee: 620 km
Apogee: 39,738 km
Inclination: 62.87°
Status: In orbit
Last known active: Oct 17, 1989
End of operations: Oct 17, 1989

Size

Mass: 1,250 kg
Dry mass: 1,150 kg
Length: 4.0 m
Diameter: 2.00 m
Span: 5.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q3397914 (CC0).