World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0036382823
Reproduction Date:

Title: Usa-64  
Author: World Heritage Encyclopedia
Language: English
Subject: USA-50, USA-54, USA-66, Navstar 7, GPS satellite blocks
Publisher: World Heritage Encyclopedia


A Block II GPS satellite
Mission type Navigation
Operator US Air Force
COSPAR ID 1990-088A
SATCAT № 20830
Mission duration 7.5 years (planned)[1]
Spacecraft properties
Spacecraft type GPS Block II[1]
Manufacturer Rockwell[1]
Launch mass 840 kilograms (1,850 lb)[2]
Start of mission
Launch date 1 October 1990, 21:56:00 (1990-10-01T21:56Z) UTC
Rocket Delta II 6925,[3] D199[3]
Launch site Cape Canaveral LC-17A[3]
End of mission
Deactivated Did not recognize date. Try slightly modifying the date in the first parameter.
Orbital parameters
Reference system Geocentric
Regime Medium Earth
Perigee 19,972 kilometres (12,410 mi)[4]
Apogee 20,390 kilometres (12,670 mi)[4]
Inclination 54.9 degrees[4]
Period 717.94 minutes[4]

USA-64, also known as GPS II-9 and GPS SVN-15, was an American navigation satellite which formed part of the Global Positioning System. It was the last of nine Block II GPS satellites to be launched, which were the first operational GPS satellites to fly. It was also the last Block II satellite to be retired from service.

USA-64 was launched at 21:56:00 UTC on 1 October 1990, atop a Delta II carrier rocket, flight number D199, flying in the 6925 configuration.[3] The launch took place from Launch Complex 17A at the Cape Canaveral Air Force Station,[5] and placed USA-64 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.[1]

On 31 October 1990, USA-64 was in an orbit with a perigee of 19,972 kilometres (12,410 mi), an apogee of 20,390 kilometres (12,670 mi), a period of 717.94 minutes, and 54.9 degrees of inclination to the equator.[4] It operated in slot 5 of plane D of the GPS constellation.[6] The satellite had a mass of 840 kilograms (1,850 lb), and generated 710 watts of power.[2] It had a design life of 7.5 years,[1] and ceased operations on 14 March 2007, having been removed from active service on 17 November 2006 for testing.


  1. ^ a b c d e Krebs, Gunter. "GPS-2 (Navstar-2)". Gunter's Space Page. Retrieved 10 July 2012. 
  2. ^ a b "Navstar 2-09". US National Space Science Data Center. Retrieved 10 July 2012. 
  3. ^ a b c d 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. 

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.