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Template:Infobox spaceflight USA-135, also known as GPS IIA-19, GPS II-28 and GPS SVN-38, is an American navigation satellite which forms part of the Global Positioning System. It was the last of nineteen Block IIA GPS satellites to be launched.

USA-135 was launched at 00:30:00 UTC on 6 November 1997, atop a Delta II carrier rocket, flight number D249, flying in the 7925-9.5 configuration.[1] The launch took place from Launch Complex 17A at the Cape Canaveral Air Force Station,[2] and placed USA-135 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.[3]

On 13 December 1997, USA-135 was in an orbit with a perigee of 19,912 kilometres (Template:Convert/round mi), an apogee of 20,449 kilometres (Template:Convert/round mi), a period of 717.9 minutes, and 54.9 degrees of inclination to the equator.[4] It broadcasts the PRN 08 signal, and operates in slot 3 of plane A of the GPS constellation.[5] The satellite has a mass of 1,816 kilograms (Template:Convert/round lb). It had a design life of 7.5 years,[3] but it actually remained in service until October 30, 2014.

ReferencesEdit

  1. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. http://planet4589.org/space/log/launchlog.txt. Retrieved 11 July 2012. 
  2. McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. http://planet4589.org/space/lvdb/list2.html. Retrieved 11 July 2012. 
  3. 3.0 3.1 Krebs, Gunter. "GPS-2A (Navstar-2A)". Gunter's Space Page. http://space.skyrocket.de/doc_sdat/navstar-2a.htm. Retrieved 10 July 2012. 
  4. McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. http://planet4589.org/space/log/satcat.txt. Retrieved 11 July 2012. 
  5. Wade, Mark. "Navstar". Encyclopedia Astronautica. http://www.astronautix.com/project/navstar.htm. Retrieved 10 July 2012. 
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