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{{Short description|American navigation satellite used for GPS}}
{{Use American English|date=December 2020}}
{{use dmy dates|date=December 2020}}
{{Infobox spaceflight {{Infobox spaceflight
| name = USA-80 | name = USA-80
| names_list = Navstar 2A-04<br/>GPS IIA-4<br/>GPS II-13<br/>GPS SVN-28
⚫ | image =
| image_caption = | image =
| insignia = | image_caption =
| image_size = 290px


| mission_type = ]
<!--Basic details-->
| mission_type = ] | operator = ]
| operator = ] | COSPAR_ID = 1992-019A <ref name="Display"/>
⚫ | SATCAT = 21930
| COSPAR_ID = 1992-019A<ref name="NSSDC">{{cite web|url=http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1992-019A|title=Navstar 2A-04|publisher=US National Space Science Data Center|accessdate=10 July 2012}}</ref>
⚫ | mission_duration = 7.5 years (planned)<br/>5.33 years (Achieved)
⚫ | SATCAT = 21930<ref name="NSSDC"/>
⚫ | mission_duration = 7.5 years (planned)<ref name="GSP"/>


⚫ | spacecraft = ]
<!--Spacecraft properties-->
| spacecraft_type = ]<ref name="GSP"/>
⚫ | spacecraft =
| spacecraft_type = ]<ref name="GSP"/> | manufacturer = ]
| launch_mass = {{cvt|840|kg}}
| manufacturer = ]<ref name="GSP"/>
| launch_mass = {{convert|1816|kg}}<ref name="GSP"/> | dimensions = {{cvt|5.3|m}} of long
| dimensions = <!--body dimensions and solar array span--> | power = 710 kg
| power = <!--end-of-life power, in watts-->


⚫ | launch_date = 10 April 1992, 03:20:00 ]
<!--Launch details-->
⚫ | launch_rocket = ] 7925-9.5<br/>(Delta D208)
⚫ | launch_date = {{start-date|10 April 1992, 03:20:00|timezone=yes}}&nbsp;UTC
⚫ | launch_site = ], ]
⚫ | launch_rocket = {{nowrap|] 7925-9.5,}} D208<ref name="LL"/>
| launch_contractor = ]
⚫ | launch_site = ] ]<ref name="LL"/>
| entered_service = <!--date on which the spacecraft entered service, if it did not do so immediately after launch-->


| entered_service = 10 April 1992
<!--end of mission-->
| disposal_type = <!--Whether the spacecraft was deorbited, decommissioned, placed in a graveyard orbit, etc--> | disposal_type = ]
| deactivated = {{end-date|15 August 1997}} | deactivated = 15 August 1997


⚫ | orbit_reference = ]
<!--orbit parameters-->
⚫ | orbit_regime = ]<br/><small>(])</small>
| orbit_slot =
| orbit_epoch = | orbit_slot = C2 (slot 2 plane C)
⚫ | orbit_periapsis = {{cvt|19877|km}}
⚫ | orbit_reference = ]
⚫ | orbit_apoapsis = {{cvt|20390|km}}
⚫ | orbit_regime = ]<br/><small>(])</small>
| orbit_inclination = 55.10°
⚫ | orbit_periapsis = {{convert|19979|km}}<ref name="satcat"/>
⚫ | orbit_period = 716.00 minutes
⚫ | orbit_apoapsis = {{convert|20384|km}}<ref name="satcat"/>
⚫ | apsis = gee
| orbit_inclination = 55.1&nbsp;degrees<ref name="satcat"/>

⚫ | orbit_period = 717.94&nbsp;minutes<ref name="satcat"/>
| apsis = gee | programme = ]
| previous_mission = ] (GPS IIA-3)
| next_mission = ] (GPS IIA-5)
}} }}
⚫ '''USA-80''', also known as '''GPS IIA-4''', '''GPS II-13''' and '''GPS SVN-28''', was an ] ] which formed part of the ]. It was the fourth of nineteen ] GPS satellites to be launched.


⚫ '''USA-80''', also known as '''GPS IIA-4''', '''GPS II-13''' and '''GPS SVN-28''', was an American ] which formed part of the ]. It was the fourth of nineteen ] GPS satellites to be launched.
⚫ USA-80 was launched at 03:20:00 UTC on 10 April 1992, atop a ] carrier rocket, flight number D208, flying in the 7925-9.5 configuration.<ref name="LL">{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|publisher=Jonathan's Space Page|first=Jonathan|last=McDowell|accessdate=10 July 2012}}</ref> The launch took place from ] at the ],<ref name="lvdb">{{cite web|url=http://planet4589.org/space/lvdb/list2.html|title=Launch List|publisher=Jonathan's Space Page|work=Launch Vehicle Database|first=Jonathan|last=McDowell|accessdate=10 July 2012}}</ref> and placed USA-80 into a transfer orbit. The satellite raised itself into ] using a ] ].<ref name="GSP">{{cite web|url=http://space.skyrocket.de/doc_sdat/navstar-2a.htm|title=GPS-2A (Navstar-2A)|first=Gunter|last=Krebs|work=Gunter's Space Page|accessdate=10 July 2012}}</ref>


== Background ==
⚫ On 12 May 1992, USA-80 was in an orbit with a ] of {{convert|19979|km}}, an ] of {{convert|20384|km}}, a ] of 717.94 minutes, and 55.1 degrees of ] to the equator.<ref name="satcat">{{cite web|url=http://planet4589.org/space/log/satcat.txt|title=Satellite Catalog|publisher=Jonathan's Space Page|first=Jonathan|last=McDowell|accessdate=10 July 2012}}</ref> It had PRN 28, and operated in slot 2 of plane C of the GPS constellation. The satellite had a mass of {{convert|1816|kg}}. It had a design life of 7.5 years;<ref name="GSP"/> however, it was retired early, on 15 August 1997. It was replaced by ].
Global Positioning System (GPS) was developed by the ] to provide all-weather round-the-clock navigation capabilities for military ground, sea, and air forces. Since its implementation, GPS has also become an integral asset in numerous civilian applications and industries around the globe, including recreational used (e.g., boating, aircraft, hiking), corporate vehicle fleet tracking, and surveying. GPS employs 24 spacecraft in 20,200&nbsp;km circular orbits inclined at 55.0°. These vehicles are placed in 6 orbit planes with four operational satellites in each plane.<ref name="Display">{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1992-019A|title=Display: Navstar 2A-04 1992-019A|publisher=NASA|date=14 May 2020|access-date=18 December 2020}} {{PD-notice}}</ref>


GPS Block 2 was the operational system, following the demonstration system composed of Block 1 (Navstar 1 - 11) spacecraft. These spacecraft were ], ] pointing using ]s. Dual solar arrays supplied 710 watts of power. They used ] (SGLS) communications for control and telemetry and ] (UHF) cross-link between spacecraft. The payload consisted of two ] navigation signals at 1575.42 ] (L1) and 1227.60&nbsp;MHz (L2). Each spacecraft carried 2 ] and 2 ] clocks and nuclear detonation detection sensors. Built by ] for the U.S. Air force, the spacecraft measured 5.3 m across with solar panels deployed and had a design life of 7.5 years.<ref name="Display"/>
⚫ ==References==

{{reflist}}
== Launch ==
⚫ USA-80 was launched at 03:20:00 UTC on 10 April 1992, atop a ] carrier rocket, flight number D208, flying in the 7925-9.5 configuration.<ref name="LL">{{cite web |url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|publisher=Jonathan's Space Report|first=Jonathan|last=McDowell|access-date=10 July 2012}}</ref> The launch took place from ] (LC-17B) at the ] (CCAFS),<ref name="lvdb">{{cite web|url=http://planet4589.org/space/lvdb/list2.html|title=Launch List|publisher=Jonathan's Space Report|work=Launch Vehicle Database|first=Jonathan|last=McDowell|access-date=10 July 2012|archive-date=15 August 2020|archive-url=https://web.archive.org/web/20200815040340/http://planet4589.org/space/lvdb/list2.html|url-status=dead}}</ref> and placed USA-80 into a transfer orbit. The satellite raised itself into ] using a ] ].<ref name="GSP">{{cite web |url=http://space.skyrocket.de/doc_sdat/navstar-2a.htm|title=GPS-2A (Navstar-2A)|first=Gunter|last=Krebs|work=Gunter's Space Page|access-date=10 July 2012}}</ref>

== Mission ==
⚫ On 12 May 1992, USA-80 was in an orbit with a ] of {{cvt|19877|km}}, an ] of {{cvt|20390|km}}, a ] of 716.00 minutes, and 55.10° of ] to the ].<ref name="Trajectory">{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/displayTrajectory.action?id=1992-019A|title=Trajectory: Navstar 2A-04 1992-019A|publisher=NASA |date=14 May 2020|access-date=18 December 2020}} {{PD-notice}}</ref> It had PRN 28, and operated in slot 2 of plane C of the GPS constellation. The satellite had a mass of {{cvt|840|kg}}. It had a design life of 7.5 years;<ref name="GSP"/> however, it was retired early, on 15 August 1997. It was replaced by ].

⚫ == References ==
{{Portal|Spaceflight}}
{{Reflist|2}}


{{GPS satellites}} {{GPS satellites}}
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] ]
] ]

{{US-spacecraft-stub}}

Latest revision as of 15:04, 18 August 2024

American navigation satellite used for GPS

USA-80
NamesNavstar 2A-04
GPS IIA-4
GPS II-13
GPS SVN-28
Mission typeNavigation
OperatorU.S. Air Force
COSPAR ID1992-019A
SATCAT no.21930
Mission duration7.5 years (planned)
5.33 years (Achieved)
Spacecraft properties
SpacecraftGPS IIA
Spacecraft typeGPS Block IIA
ManufacturerRockwell International
Launch mass840 kg (1,850 lb)
Dimensions5.3 m (17 ft) of long
Power710 kg
Start of mission
Launch date10 April 1992, 03:20:00 UTC
RocketDelta II 7925-9.5
(Delta D208)
Launch siteCape Canaveral, LC-17B
ContractorMcDonnell Douglas
Entered service10 April 1992
End of mission
DisposalGraveyard orbit
Deactivated15 August 1997
Orbital parameters
Reference systemGeocentric orbit
RegimeMedium Earth orbit
(Semi-synchronous)
SlotC2 (slot 2 plane C)
Perigee altitude19,877 km (12,351 mi)
Apogee altitude20,390 km (12,670 mi)
Inclination55.10°
Period716.00 minutes
Global Positioning System← USA-79 (GPS IIA-3)USA-83 (GPS IIA-5) →

USA-80, also known as GPS IIA-4, GPS II-13 and GPS SVN-28, was an American navigation satellite which formed part of the Global Positioning System. It was the fourth of nineteen Block IIA GPS satellites to be launched.

Background

Global Positioning System (GPS) was developed by the U.S. Department of Defense to provide all-weather round-the-clock navigation capabilities for military ground, sea, and air forces. Since its implementation, GPS has also become an integral asset in numerous civilian applications and industries around the globe, including recreational used (e.g., boating, aircraft, hiking), corporate vehicle fleet tracking, and surveying. GPS employs 24 spacecraft in 20,200 km circular orbits inclined at 55.0°. These vehicles are placed in 6 orbit planes with four operational satellites in each plane.

GPS Block 2 was the operational system, following the demonstration system composed of Block 1 (Navstar 1 - 11) spacecraft. These spacecraft were 3-axis stabilized, nadir pointing using reaction wheels. Dual solar arrays supplied 710 watts of power. They used S-band (SGLS) communications for control and telemetry and Ultra high frequency (UHF) cross-link between spacecraft. The payload consisted of two L-band navigation signals at 1575.42 MHz (L1) and 1227.60 MHz (L2). Each spacecraft carried 2 rubidium and 2 Cesium clocks and nuclear detonation detection sensors. Built by Rockwell Space Systems for the U.S. Air force, the spacecraft measured 5.3 m across with solar panels deployed and had a design life of 7.5 years.

Launch

USA-80 was launched at 03:20:00 UTC on 10 April 1992, atop a Delta II carrier rocket, flight number D208, flying in the 7925-9.5 configuration. The launch took place from Launch Complex 17B (LC-17B) at the Cape Canaveral Air Force Station (CCAFS), and placed USA-80 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.

Mission

On 12 May 1992, USA-80 was in an orbit with a perigee of 19,877 km (12,351 mi), an apogee of 20,390 km (12,670 mi), a period of 716.00 minutes, and 55.10° of inclination to the equator. It had PRN 28, and operated in slot 2 of plane C of the GPS constellation. The satellite had a mass of 840 kg (1,850 lb). It had a design life of 7.5 years; however, it was retired early, on 15 August 1997. It was replaced by USA-117.

References

  1. ^ "Display: Navstar 2A-04 1992-019A". NASA. 14 May 2020. Retrieved 18 December 2020. Public Domain This article incorporates text from this source, which is in the public domain.
  2. ^ Krebs, Gunter. "GPS-2A (Navstar-2A)". Gunter's Space Page. Retrieved 10 July 2012.
  3. McDowell, Jonathan. "Launch Log". Jonathan's Space Report. Retrieved 10 July 2012.
  4. McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Report. Archived from the original on 15 August 2020. Retrieved 10 July 2012.
  5. "Trajectory: Navstar 2A-04 1992-019A". NASA. 14 May 2020. Retrieved 18 December 2020. Public Domain This article incorporates text from this source, which is in the public domain.
NAVSTAR Global Positioning System satellites
List of GPS satellites
Block I
Block II
Block IIA
Block IIR
Block IIRM
Block IIF
Block III
Block IIIF
Italics indicate future missions. Signs † indicate launch failures.
← 1991Orbital launches in 19921993 →
January
February
March
April
May
June
July
August
September
October
November
December
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ).
Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
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