Satellite DSP 20 (USA 149) (Defense Support Program) of Air Force

Name of Satellite, Alternate Names DSP 20 (USA 149) (Defense Support Program)
Country of Operator/Owner USA
Operator/Owner Air Force
Users Military
Purpose Early Warning
Class of Orbit GEO
Type of Orbit
Longitude of GEO (degrees) -36.25
Perigee (km) 35897
Apogee (km) 35909
Eccentricity 0.000141934568164076
Inclination (degrees) 4.08
Period (minutes) 142.08
Launch Mass (kg.) 2380
Dry Mass (kg.)
Power (watts) 1485
Date of Launch 18-05-2000
Expected Lifetime 7-9 yrs.
Contractor TRW and Aerojet Electronics Systems
Country of Contractor USA
Launch Site Cape Canaveral
Launch Vehicle Titan IVB
COSPAR Number 2000-024A
NORAD Number 26356
Comments Infrared sensors to detect heat from missile and booster plumes against Earth´s background; detection capability of smaller missiles; improved warning of attack by short-range missiles against U.S. and allied forces.


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