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Usa-201

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Usa-201

USA-201
A Block IIRM GPS satellite
Mission type Navigation
Operator US Air Force
COSPAR ID 2008-012A[1]
SATCAT № 32711[1]
Mission duration 10 years (planned)
Spacecraft properties
Spacecraft type GPS Block IIRM[2]
Bus AS-4000[2]
Manufacturer Lockheed Martin[2]
Launch mass 2,032 kilograms (4,480 lb)[2]
Start of mission
Launch date 15 March 2008, 06:10 (2008-03-15T06:10Z) UTC
Rocket Delta II 7925-9.5, D332[3]
Launch site Cape Canaveral SLC-17A[3]
Orbital parameters
Reference system Geocentric
Regime Medium Earth
(Semi-synchronous)
Perigee 20,143 kilometres (12,516 mi)[4]
Apogee 20,222 kilometres (12,565 mi)[4]
Inclination 55.1 degrees[4]
Period 717.98 minutes[4]

USA-201, also known as GPS IIR-19(M), GPS IIRM-6 and GPS SVN-48, is an American navigation satellite which forms part of the Global Positioning System. It was the sixth of eight Block IIRM satellites to be launched, and the nineteenth of twenty one Block IIR satellites overall. It was built by Lockheed Martin, using the AS-4000 satellite bus.[2]

USA-201 was launched at 06:10 UTC on 15 March 2008, atop a Delta II carrier rocket, flight number D332, flying in the 7925-9.5 configuration.[3] The launch took place from Space Launch Complex 17A at the Cape Canaveral Air Force Station,[5] and placed USA-201 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37FM apogee motor.[2]

By 18 May 2008, USA-201 was in an orbit with a perigee of 20,143 kilometres (12,516 mi), an apogee of 20,222 kilometres (12,565 mi), a period of 717.98 minutes, and 55.1 degrees of inclination to the equator.[4] It is used to broadcast the PRN 07 signal, and operates in slot 4 of plane A of the GPS constellation. The satellite has a design life of 10 years and a mass of 2,032 kilograms (4,480 lb).[2] As of 2012 it remains in service.

References

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  2. ^ a b c d e f g
  3. ^ a b c
  4. ^ a b c d e
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