Milstar 1-1


Spacecraft n°:

USA satellite n°:

Military Strategic and Tactical Relay
Also called USA 099 and Milstar DFS-1

Launch data:

Designation 22988 / 94009A
Launch date07 Feb 1994 - 21:47 UT
Launch site CC, LC-40
Launch vehicle  Titan 4(01)A / Centaur-T
MissionMilitary: Communications
Geostationary orbit on:
Perigee / Apogee 35754 x 35819 km
Eccentricity 7,71E-04
Inclination 5.99 deg
Period 1436.13 min

Spacecraft data:

Prime contractor  Lockheed Martin Missiles and Space
Operator US Air Force
Mass at launch  4536 kg
Dry Mass  kg
Basic shape  
Dimension (m) 
Solar array  
DC power  8000 W
Design lifetime  10 yrs - still active


 begin 2009 38.90°W 
 16 Aug 2020 Relocated at 38.90°W 

Possible transmission at 2262.5 MHz
Voice communication, data, imagery and video; survivable global military communication system. "World's most secure, nuclear survivable, space-based communication system."

Ref.: #3(SD574), #7, #226 - update: 15.11.20 Home