TDRS-F being deployed from Endeavour
10 years (planned)|
16+ years (achieved)
|Launch mass||3,180 kilograms (7,010 lb)|
|Start of mission|
|Launch date||13 January 1993, 13:59:30UTC|
Space Shuttle Endeavour|
STS-54 / IUS
|Launch site||Kennedy LC-39B|
46° West (1994-1996)|
47° West (1996-2005)
174° West (2005—)
|Perigee||35,773 kilometers (22,228 mi)|
|Apogee||35,787 kilometers (22,237 mi)|
|Epoch||13 January 1993, 08:59:30 UTC|
TDRS-6, known before launch as TDRS-F, is an American communications satellite which is operated by NASA as part of the Tracking and Data Relay Satellite System. It was constructed by TRW, and is based on a custom satellite bus which was used for all seven first generation TDRS satellites.
TDRS-F was deployed from Space Shuttle Endeavour during the STS-54 mission in 1993. Endeavour was launched from Launch Complex 39B at the Kennedy Space Center, at 13:59:30 GMT on 13 January 1993. TDRS-F was deployed from Endeavour around six hours after launch, and was raised to geosynchronous orbit by means of an Inertial Upper Stage.
The two-stage solid-propellent Inertial Upper Stage made two burns. The first stage burn occurred shortly after deployment from Endeavour, and placed the satellite into a geosynchronous transfer orbit. At 02:26 GMT on 14 January it reached apogee, and the second stage fired, placing TDRS-F into geosynchronous orbit. At this point it received its operational designation, TDRS-6.
In 1994, it was placed at a longitude 46 degrees west of the Greenwich Meridian, to serve as an on-orbit spare. In 1996, it was moved to 47° West, where it remained until 2005, when it was repositioned to 174° West, where, as of August 2009[update], it was used to provide communications with spacecraft in Earth orbit, such as the International Space Station (ISS) and spacecraft bringing astronauts to the ISS.
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