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Usa-100

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Usa-100

USA-100
A Block IIA GPS satellite
Mission type Navigation
Operator US Air Force
COSPAR ID 1994-016A[1]
SATCAT № 23027[1]
Mission duration 7.5 years (planned)[2]
Spacecraft properties
Spacecraft type GPS Block IIA[2]
Manufacturer Rockwell[2]
Launch mass 1,816 kilograms (4,004 lb)[2]
Start of mission
Launch date 10 March 1994, 03:40:01 (1994-03-10T03:40:01Z) UTC
Rocket Delta II 7925-9.5, D226[3]
Launch site Cape Canaveral LC-17A[3]
Orbital parameters
Reference system Geocentric
Regime Medium Earth
(Semi-synchronous)
Perigee 19,986 kilometres (12,419 mi)[4]
Apogee 20,315 kilometres (12,623 mi)[4]
Inclination 54.9 degrees[4]
Period 716.69 minutes[4]

USA-100, also known as GPS IIA-15, GPS II-24 and GPS SVN-36, is an American navigation satellite which forms part of the Global Positioning System. It was the fifteenth of nineteen Block IIA GPS satellites to be launched.

USA-100 was launched at 03:40:01 UTC on 10 March 1994, atop a Delta II carrier rocket, flight number D226, 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-100 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.[2]

On 15 April 1994, USA-100 was in an orbit with a perigee of 19,986 kilometres (12,419 mi), an apogee of 20,315 kilometres (12,623 mi), a period of 716.69 minutes, and 54.9 degrees of inclination to the equator.[4] It broadcasts the PRN 06 signal, and operates in slot 1 of plane C 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] but it remained in service until February of 2014, shortly after the launch of USA-248.

References

  1. ^ a b "Navstar 2A-15". 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 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 10 July 2012. 


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