Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

Westar 4

retired

CommunicationsGEOCOSPAR 1982-014ALaunched 2/26/1982

Mission & Launch

Launch Mission: Westar 4 Mission
Launch Vehicle: Delta 3910
Launch Date: 2/26/1982
Last Contact: 11/9/1991

Orbit & Mass

Orbit Class: GEO
Altitude: 35,787 km
Inclination: 0.05 deg
Dry Mass: 452 kg
Total Mass: 1,095 kg

Payload Classification

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

Organizations

Operator: Western Union Telegraph Corp.
Manufacturer: Hughes Space and Comms. Co (Hughes Satellite Systems)

Registry

COSPAR ID: 1982-014A
UN Registration: ST/SG/SER.E/067