Satellite UFO-4 (USA 108, UFO F4 EHF) "UHF Follow-On" of US Navy

Name of Satellite, Alternate Names UFO-4 (USA 108, UFO F4 EHF) "UHF Follow-On"
Country of Operator/Owner USA
Operator/Owner US Navy
Users Military
Purpose Communications
Class of Orbit GEO
Type of Orbit
Longitude of GEO (degrees) -177.12
Perigee (km) 35763
Apogee (km) 35775
Eccentricity 0.000142385913286979
Inclination (degrees) 3.34
Period (minutes) 1435.22
Launch Mass (kg.) 3200
Dry Mass (kg.) 1545
Power (watts) 2,800 (EOL)
Date of Launch 29-01-1995
Expected Lifetime 4 yrs.
Contractor Boeing Satellite Systems
Country of Contractor USA
Launch Site Cape Canaveral
Launch Vehicle Atlas 2
COSPAR Number 1995-003A
NORAD Number 23467
Comments Ultra-High Frequency (UHF) communications and Super-High Frequency (SHF) antijam command and broadcast capabilities through four pairs of geosynchronous satellites and one spare; tactical application.


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