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Mission typeNavigation
OperatorUS Air Force
COSPAR ID1992-039A[1]
SATCAT no.22014[1]
Mission duration7.5 years (planned)[2]
Spacecraft properties
Spacecraft typeGPS Block IIA[2]
Launch mass1,816 kilograms (4,004 lb)[2]
Start of mission
Launch date7 July 1992, 09:20:01 (1992-07-07UTC09:20:01Z) UTC
RocketDelta II 7925-9.5, D211[3]
Launch siteCape Canaveral LC-17B[3]
End of mission
Deactivated5 January 2015 (2015-01-06)
Orbital parameters
Reference systemGeocentric
RegimeMedium Earth
Perigee altitude19,959 kilometres (12,402 mi)[4]
Apogee altitude20,403 kilometres (12,678 mi)[4]
Inclination55 degrees[4]
Period717.92 minutes[4]

USA-83, also known as GPS IIA-5, GPS II-14 and GPS SVN-26, is an American navigation satellite which forms part of the Global Positioning System. It was the fifth of nineteen Block IIA GPS satellites to be launched.

USA-83 was launched at 09:20:01 UTC on 7 July 1992, atop a Delta II carrier rocket, flight number D211, flying in the 7925-9.5 configuration.[3] The launch took place from Launch Complex 17B at the Cape Canaveral Air Force Station,[5] and placed USA-83 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.[2]

On 6 August 1992, USA-83 was in an orbit with a perigee of 19,959 kilometres (12,402 mi), an apogee of 20,403 kilometres (12,678 mi), a period of 717.92 minutes, and 55 degrees of inclination to the equator.[4] It has PRN 26, and operates in slot 2 of plane F of the GPS constellation.[6] The satellite has a mass of 1,816 kilograms (4,004 lb). It had a design life of 7.5 years;[2] however, it actually remained in service until January 5, 2015.[7]

It was subsequently disposed of [8] and currently resides in a disposal orbit approximately 1000 km above the operational constellation.[9]


  1. ^ a b "Navstar 2A-05". US National Space Science Data Center. Retrieved 10 July 2012.
  2. ^ a b c d e f Krebs, Gunter. "GPS-2A (Navstar-2A)". Gunter's Space Page. Retrieved 10 July 2012.
  3. ^ a b c McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 10 July 2012.
  4. ^ a b c d e McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 10 July 2012.
  5. ^ McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. Retrieved 10 July 2012.
  6. ^ Wade, Mark. "Navstar". Encyclopedia Astronautica. Retrieved 10 July 2012.
  7. ^ "NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015005". United States Coast Guard. Retrieved 31 October 2015.
  8. ^ "". Retrieved 31 October 2015.
  9. ^ "". Retrieved 31 October 2015.