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Navstar 50



NAVSTAR 50 (USA 156) is an American GPS navigational spacecraft that was launched by a Delta 2 rocket from Vandenberg AFB at 07:55 UT. The two-ton satellite is the 28th member of the "second generation" fleet, four of which (including the latest) being replacements for the older models. A case history of all GPS spacecraft is available at In GPS parlance, the spacecraft is GPS 2-28.

Alternate Names

  • 26690
  • USA 156
  • Navstar50

Facts in Brief

Launch Date: 2001-01-30
Launch Vehicle: Delta II
Launch Site: Cape Canaveral, United States

Funding Agency

  • Unknown (United States)


  • Navigation/Global Positioning

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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