Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

Kosmos-861

retired

Космос-861

Signals IntelligenceLEOCOSPAR 1976-104ALaunched 10/21/1976

Mission & Launch

Launch Mission: Kosmos-861 Mission
Launch Vehicle: Tsiklon-2
Launch Date: 10/21/1976
Last Contact: 12/20/1976

Orbit & Mass

Orbit Class: LEO
Altitude: 256.5 km
Inclination: 64.95 deg
Dry Mass: 1,150 kg
Total Mass: 3,800 kg

Payload Classification

Mission Type: Signals Intelligence
Payload Category: SIG
Payload Class: D

Organizations

Operator: Russian Navy
Manufacturer: TsNII Kometa

Constellation

Name: US naval ocean surveillance
Active Satellites: 0

Registry

COSPAR ID: 1976-104A
UN Registration: A/AC.105/INF.352