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Satellite Data System

The Satellite Data System (SDS) is a system of United States military communications satellites. At least three generations have been used: SDS-1 from 1976 to 1987; SDS-2 from 1989 to 1996; SDS-3 from 1998 to the present. It is believed that these satellites were known by the code name Quasar. The first generation was named simply 'SDS', the second…

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Orbital characteristics

Mission

SDS-1

SDS-2

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Satellite Data System

Nodes33
Edges32
Triples0
Avg. degree1.94
Density0.060606
Components1

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satellites sds-1 sds sds-2 communications satellite used two launch data system united states military three believed first third apogee polar

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