Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

Navstar 3

retired

Positioning Navigation TimingMEOCOSPAR 1978-093ALaunched 10/7/1978

Mission & Launch

Launch Mission: GPS 3
Launch Vehicle: Atlas F
Launch Date: 10/7/1978
Last Contact: 5/18/1992

Orbit & Mass

Orbit Class: MEO
Altitude: 20,183.5 km
Inclination: 62.81 deg
Orbit Plane: 2
Dry Mass: 409 kg
Total Mass: 775 kg

Payload Classification

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

Organizations

Operator: U.S. Air Force
Manufacturer: Boeing

Constellation

Name: GPS
Active Satellites: 35
Planned Satellites: 24

Registry

COSPAR ID: 1978-093A
UN Registration: ST/SG/SER.E/019