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USA 4

retired

CommunicationsHEOCOSPAR 1984-091ALaunched 8/28/1984

Mission & Launch

Launch Mission: USA 4 [JS7]
Launch Vehicle: Titan 34B
Launch Date: 8/28/1984
Last Contact: 1/1/1994

Orbit & Mass

Orbit Class: HEO
Altitude: 19,847 km
Inclination: 63.3 deg
Dry Mass: 650 kg
Total Mass: 800 kg

Payload Classification

Mission Type: Communications
Payload Category: COM
Payload Class: D

Organizations

Operator: U.S. National Reconnaissance Office (NRO)
Manufacturer: Hughes Space and Comms. Co (Hughes Satellite Systems)

Constellation

Name: Satellite Data System
Active Satellites: 6

Registry

COSPAR ID: 1984-091A
UN Registration: ST/SG/SER.E/113