Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

Soyuz-20

retired

Союз-20

Human SpaceflightLEOCOSPAR 1975-106ALaunched 11/17/1975

Mission & Launch

Launch Mission: Soyuz-20 Mission
Launch Vehicle: Soyuz-U
Launch Date: 11/17/1975
Last Contact: 2/16/1976

Orbit & Mass

Orbit Class: LEO
Altitude: 343 km
Inclination: 51.59 deg
Dry Mass: 2,850 kg
Total Mass: 6,800 kg

Payload Classification

Mission Type: Human Spaceflight
Payload Category: SS
Payload Class: C

Organizations

Operator: NPO Energomash
Manufacturer: NPO Energomash

Registry

COSPAR ID: 1975-106A
UN Registration: A/AC.105/INF.334