TDRS 1

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General

Designation	13969 / 83026B
Launch date	4 Apr 1983
Country of origin	United States
Mission	Telecommunications
Geostationary orbit	see below
Launch vehicle	STS 06

Its propulsion device (IUS) didn't work. The satellite reached the geostationary orbit by himself, using much of his propellant.

Still partially operational for its 20th anniversary, provides communication services to the South Pole stations.

On 3 Feb 1997 a failure occured on 1 of the gyros. The traffic was taken over be TDRS 6

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Location

Begin	End	Position
L: 4 Apr 1983		GTO
17 Oct 1983		41°W
1989		79°W
Feb 1995	May 1995	85°E, inclined
Jul 1995	mid-Dec 1995	139°W, inclined
mid-Jun 1996	Oct 2009	49°W, inclined (to support ELVs over the South Atlantic)
Nov 2009		56°W, inclined

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End of life

Out of service	4 Apr 2008 (initially announced) Official date: 27 Jun 2010
Cause	Moved to junk orbit

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External resources

sat-index articles

Technical data

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Specifications
S-band
C-band
Ku-band
C-band transponder frequency chart

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