Name of Satellite, Alternate Names |
DSP 21 (USA 159) (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) |
69.48 |
Perigee (km) |
35765 |
Apogee (km) |
35810 |
Eccentricity |
0.000533712862479986 |
Inclination (degrees) |
3.68 |
Period (minutes) |
1436.14 |
Launch Mass (kg.) |
2380 |
Dry Mass (kg.) |
|
Power (watts) |
1485 |
Date of Launch |
06-08-2001 |
Expected Lifetime |
7-9 yrs. |
Contractor |
TRW and Aerojet Electronics Systems |
Country of Contractor |
USA |
Launch Site |
Cape Canaveral |
Launch Vehicle |
Titan 4B |
COSPAR Number |
2001-033A |
NORAD Number |
26880 |
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. |