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USA-256


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USA-256

Navstar-2F.jpg
A Block IIF GPS satellite

Mission type Navigation
Operator US Air Force
COSPAR ID 2014-045A[1]
SATCAT no.
40105[1]
Mission duration 12 years (planned)

Spacecraft properties
Spacecraft GPS SVN-68 (IIF-7)
Spacecraft type GPS Block IIF
Manufacturer Boeing
Launch mass 1,630 kilograms (3,590 lb)[2]

Start of mission
Launch date 2 August 2014, 03:23 (2014-08-02UTC03:23Z) UTC
Rocket
Atlas V 401, AV-048[3]
Launch site
Cape Canaveral SLC-41[3]
Contractor ULA

Orbital parameters
Reference system Geocentric
Regime
Medium Earth
(Semi-synchronous)
Perigee 20,341 km (12,639 mi)[4]
Apogee 20,469 km (12,719 mi)[4]
Inclination 55.02 degrees[4]
Period 727.05 minutes[4]
Epoch 2 August 2014


USA-256, also known as GPS IIF-7, GPS SVN-68 and NAVSTAR 71, is an American navigation satellite which forms part of the Global Positioning System. It was the seventh of twelve Block IIF satellites to be launched.[2]



Launch[edit]


Built by Boeing and launched by United Launch Alliance, USA-256 was launched at 03:23 UTC on 2 August 2014, atop a Atlas V 401 carrier rocket, vehicle number AV-048.[3] The launch took place from Space Launch Complex 41 at the Cape Canaveral Air Force Station,[5] and placed USA-256 directly into medium Earth orbit.[4]



Orbit[edit]


As of 3 August 2014, USA-256 was in an orbit with a perigee of 20,341 kilometers (12,639 mi), an apogee of 20,469 kilometers (12,719 mi), a period of 727.05 minutes, and 55.02 degrees of inclination to the equator.[4] It is used to broadcast the PRN 09 signal, and operates in slot 6 of plane F of the GPS constellation. The satellite has a design life of 12 years and a mass of 1,630 kilograms (3,590 lb).
[2] It is currently in service following commissioning on September 17, 2014.[6]




References[edit]






  1. ^ ab "Navstar 71". US National Space Science Data Center. Retrieved 3 August 2014..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  2. ^ abc Krebs, Gunter. "GPS-2F (Navstar-2F)". Gunter's Space Page. Retrieved 3 August 2014.


  3. ^ abc McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 3 August 2014.


  4. ^ abcdef McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 3 August 2014.


  5. ^ McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. Retrieved 3 August 2014.


  6. ^ "NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2014071". United States Coast Guard. Retrieved 18 September 2014.















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