Kosmos 1903

Russian military early warning satellite. Kosmos 1903 was launched on December 21, 1987 aboard a Molniya 8K78M from Plesetsk. Latest status in GCAT: in orbit.

COSPAR 1987-105ANORAD 18701Soviet Union

Identity

Name in GCAT: Kosmos-1903
Common name: Kosmos 1903
Payload designation: Oko 73D6 No. 6040
Other names: 73D6 No. 782-56-781:RA
International designator: 1987-105A
NORAD catalog number: 18701
GCAT identifier: S18701
UN registration: ST/SG/SER.E/176

Mission

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

Launch

Date: December 21, 1987 · 22:35 UTC
Launch record: 1987-105Success
Rocket: Molniya 8K78M
Spaceport: Plesetsk · pad LC41/1

Orbit and fate

Orbit class (GCAT): HEO/M
Perigee: 606 km
Apogee: 39,746 km
Inclination: 63.08°
Status: In orbit
Last known active: Sep 11, 1992
End of operations: Sep 11, 1992

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 Q3398146 (CC0).