TRACKING AND DATA RELAY SATELLITE SYSTEM SATELLITES

The Tracking and Data Relay Satellite System (TDRSS) is a network of communications satellites and ground stations used by NASA for space communications. The system was designed to replace an existing network of ground stations that had supported all of NASA's manned flight missions. The prime design goal was to increase the time spacecraft were in communication with the ground and improve the amount of data that could be transferred.

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Name	NORAD ID	Int'l Code	Launch date	Period [minutes]
HST	20580	1990-037B	April 24, 1990	94.7
SORCE	27651	2003-004A	January 25, 2003	96.1
SPACE STATION	25544	1998-067A	November 20, 1998	92.9
SPACE STATION	25544	1998-067A	November 20, 1998	92.9
SPACE STATION	25544	1998-067A	November 20, 1998	92.9
SPACE STATION	25544	1998-067A	November 20, 1998	92.9
SPACE STATION	25544	1998-067A	November 20, 1998	92.9
SPACE STATION	25544	1998-067A	November 20, 1998	92.9
SPACE STATION	25544	1998-067A	November 20, 1998	92.9
TDRS 1	13969	1983-026B	April 4, 1983	1458.4
TDRS 10	27566	2002-055A	December 5, 2002	1436.1
TDRS 11	39070	2013-004A	January 31, 2013	1436.1
TDRS 13	42915	2017-047A	August 18, 2017	1436.1
TDRS 3	19548	1988-091B	September 29, 1988	1436.2
TDRS 4	19883	1989-021B	March 13, 1989	1462.2
TDRS 5	21639	1991-054B	August 2, 1991	1436.2
TDRS 6	22314	1993-003B	January 13, 1993	1436.2
TDRS 7	23613	1995-035B	July 13, 1995	1436.2
TDRS 8	26388	2000-034A	June 30, 2000	1436.2
TDRS 9	27389	2002-011A	March 8, 2002	1454.8
TDRS-12	39504	2014-004A	January 23, 2014	1436
VESSELSAT 1	37840	2011-058C	October 12, 2011	102