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IBSS/SPAS

retired

Missile Warning TrackingLEOCOSPAR 1991-031BLaunched 4/28/1991

Mission & Launch

Launch Mission: SDIO/SPAS
Launch Vehicle: Space Shuttle
Launch Date: 4/28/1991
Last Contact: 5/4/1991

Orbit & Mass

Orbit Class: LEO
Altitude: 249.5 km
Inclination: 56.99 deg
Dry Mass: 1,793 kg
Total Mass: 1,835 kg

Payload Classification

Mission Type: Missile Warning Tracking
Payload Category: EW/TECH
Payload Class: D

Organizations

Operator: Strategic Defense Initiative Organization, DoD
Manufacturer: Airbus

Registry

COSPAR ID: 1991-031B
UN Registration: ST/SG/SER.E/258