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A Block IIR GPS satellite
Mission typeNavigation
OperatorUS Air Force
COSPAR ID1997-035A[1]
SATCAT no.24876[1]
Mission duration10 years (planned)[2]
Currently 22 years in service
Spacecraft properties
Spacecraft typeGPS Block IIR[2]
ManufacturerLockheed Martin[2]
Launch mass2,032 kilograms (4,480 lb)[2]
Start of mission
Launch date23 July 1997, 03:43:01 (1997-07-23UTC03:43:01Z) UTC
RocketDelta II 7925-9.5, D245[3]
Launch siteCape Canaveral LC-17A[3]
Orbital parameters
Reference systemGeocentric
RegimeMedium Earth
Perigee altitude20,123 kilometres (12,504 mi)[4]
Apogee altitude20,247 kilometres (12,581 mi)[4]
Inclination54.9 degrees[4]
Period718.08 minutes[4]

USA-132, also known as GPS IIR-2 and GPS SVN-43, is an American navigation satellite which forms part of the Global Positioning System. It was the second Block IIR GPS satellite to be launched, out of thirteen in the original configuration, and twenty one overall. GPS IIR-1 failed to achieve orbit, so USA-132 was the first successful Block IIR satellite. It was built by Lockheed Martin, using the AS-4000 satellite bus.[2]

USA-132 was launched at 03:43:01 UTC on 23 July 1997, atop a Delta II carrier rocket, flight number D245, flying in the 7925-9.5 configuration.[3] The launch took place from Launch Complex 17A at the Cape Canaveral Air Force Station,[5] and placed USA-132 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37FM apogee motor.[2]

By 22 August 1997, USA-132 was in an orbit with a perigee of 20,123 kilometres (12,504 mi), an apogee of 20,247 kilometres (12,581 mi), a period of 718.08 minutes, and 54.9 degrees of inclination to the equator.[4] It is used to broadcast the PRN 13 signal, and operates in slot 3 of plane F of the GPS constellation.[6] The satellite has a mass of 2,032 kilograms (4,480 lb), and a design life of 10 years.[2] As of 2019 it remains in service.


  1. ^ a b "Navstar 43". US National Space Science Data Center. Retrieved 11 July 2012.
  2. ^ a b c d e f g h Krebs, Gunter. "GPS-2R (Navstar-2R)". Gunter's Space Page. Retrieved 11 July 2012.
  3. ^ a b c McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 11 July 2012.
  4. ^ a b c d e McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 11 July 2012.
  5. ^ McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. Retrieved 11 July 2012.
  6. ^ Wade, Mark. "Navstar". Encyclopedia Astronautica. Retrieved 11 July 2012.