2026-244Latest orbital launch: Falcon 9 · Starlink Group 15-16 · Oct 27, 2026 · VandenbergLaunch record →
sci-techmaventhe history of spaceflight, in data
  1. Home
  2. Spacecraft
  3. Cosmos 870
// signals intelligence · 1976

Cosmos 870

Cosmos 870 was launched on December 2, 1976 aboard a Kosmos 11K65M from Plesetsk. Latest status in GCAT: reentered (orbital decay) (Dec 20, 1980).

COSPAR 1976-115ANORAD 9573Soviet Union

Identity

Name in GCAT
Kosmos-870
Common name
Cosmos 870
Payload designation
Tselina-OM
International designator
1976-115A
NORAD catalog number
9573
GCAT identifier
S09573
UN registration
A/AC.105/INF.355

Mission

Mission type
Signals intelligence
Use
Defense
Program
Tselina-OM
Owner
GRU
Country
Soviet Union
Builder
Southern State Design Bureau
Platform (bus)
Tselina-OM

Launch

Date
December 2, 1976 · 00:17 UTC
Launch record
1976-115Success
Spaceport
Plesetsk · pad LC132/2

Orbit and fate

Orbit class (GCAT)
LLEO/I
Perigee
511 km
Apogee
547 km
Inclination
74.00°
Status
Reentered (orbital decay)
Status date
December 20, 1980
Last known active
1977
End of operations
1977

Size

Mass
434 kg
Dry mass
434 kg
Length
5.1 m
Diameter
1.20 m
Span
5.1 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q12907818 (CC0).