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GPS II-4

retired

Positioning Navigation TimingMEOCOSPAR 1989-085ALaunched 10/21/1989

Mission & Launch

Launch Mission: USA 47 (GPS II-4)
Launch Vehicle: Delta 6925
Launch Date: 10/21/1989
Last Contact: 9/11/2001

Orbit & Mass

Orbit Class: MEO
Altitude: 20,180.5 km
Inclination: 54.76 deg
Orbit Plane: 3
Dry Mass: 776 kg
Total Mass: 1,667 kg

Payload Classification

Mission Type: Positioning Navigation Timing
Payload Category: NAV
Payload Class: D

Organizations

Operator: U.S. Space Systems Command
Manufacturer: Boeing

Constellation

Name: GPS
Active Satellites: 35
Planned Satellites: 24

Registry

COSPAR ID: 1989-085A
UN Registration: ST/SG/SER.E/220