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Also called OPS 5113 or Navstar 3 or GPS 03


Designation 11054 / 78093A
Launch date 7 Oct 1978
Country of origin United States
Mission Navigation
Perigee/Apogee 20705/20942 km
Inclination 63.3°
Period 744.2 min
Launch vehicle Atlas F
Launch site Vandenberg

Was equipped with corner-cube reflectors for satellite laser ranging (SLR). SLR tracking of the satellites permit onboard clock errors and satellite ephemeris errors in GPS tracking to be differentiated.

End of life

Out of service May 1992

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