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USA-42 - Wikipedia

From Wikipedia, the free encyclopedia

USA-42
Spacecraft properties
Names	Navstar 2-03 GPS II-3 GPS SVN-16

Mission type	Navigation
Operator	U.S. Air Force
COSPAR ID	1989-064A
SATCAT no.	20185
Mission duration	7.5 years (planned) 11 years (achieved)


Spacecraft	GPS II
Spacecraft type	GPS Block II^[1]
Manufacturer	Rockwell International
Launch mass	840 kg (1,850 lb) ^[2]
Dimensions	5.3 m (17 ft) of long
Power	710 watts


Start of mission
Launch date	18 August 1989, 05:57:59 UTC
Rocket	Delta II 6925-9.5 (Delta D186) ^[3]
Launch site	Cape Canaveral, LC-17A
Contractor	McDonnell Douglas
Entered service	September 1989


End of mission
Deactivated	13 October 2000


Orbital parameters
Reference system	Geocentric orbit^[4]
Regime	Medium Earth orbit (Semi-synchronous)
Slot	?
Perigee altitude	20,113 km (12,498 mi)
Apogee altitude	20,246 km (12,580 mi)
Inclination	54.9°
Period	717.86 minutes

Global Positioning System ← USA-38 (GPS II-2) USA-47 (GPS II-4) →

USA-42, also known as GPS II-3 and GPS SVN-16, was an American navigation satellite which formed part of the Global Positioning System. It was the third of nine Block II GPS satellites to be launched, which were the first operational GPS satellites to be placed into orbit.

Background

It was part of the 21-satellite Global Positioning System (GPS) Block II series that provides precise position data (accurate to within 16 m) to military and civilian users worldwide. Its signals could be received on devices as small as a telephone. The GPS II satellites, built by Rockwell International for the Air Force Space Systems Division, each have a 7.5-year design life. The Air Force intends to launch a GPS II every 2 to 3 months until the constellation of 21 operational satellite and 3 spares is aloft. The GPS Block II join 7 operational Block 1 satellites.^[2]

Launch

USA-42 was launched at 05:57:59 UTC on 18 August 1989, atop a Delta II launch vehicle, flight number D186, flying in the 6925 configuration.^[3] The launch took place from Launch Complex 17A (LC-17A) at the Cape Canaveral Air Force Station (CCAFS),^[5] and placed USA-42 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.^[1]

Mission

On 19 September 1989, USA-42 was in an orbit with a perigee of 20,113 km (12,498 mi), an apogee of 20,246 km (12,580 mi), a period of 717.86 minutes, and 54.9° of inclination to the equator.^[4] The satellite had a mass of 840 kg (1,850 lb), and generated 710 watts of power.^[2] It had a design life of 7.5 years,^[1] and ceased operations on 13 October 2000.

References

^ ^a ^b ^c Krebs, Gunter. "GPS 2 (Navstar 2-03)". Gunter's Space Page. Retrieved 10 July 2012.
^ ^a ^b ^c "Display: Navstar 2-03 1989-064A". US National Space Science Data Center. NASA. Retrieved 10 July 2012. This article incorporates text from this source, which is in the public domain.
^ ^a ^b McDowell, Jonathan. "Launch Log". Jonathan's Space Report. Retrieved 10 July 2012.
^ ^a ^b McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Report. Retrieved 10 July 2012.
^ McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Report. Archived from the original on 15 August 2020. Retrieved 10 July 2012.

v t e NAVSTAR Global Positioning System satellites
List of GPS satellites
Block I	1 2 3 4 5 6 7† 8 9 10 11
Block II	1 2 3 4 5 6 7 8 9
Block IIA	1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Block IIR	1† 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Block IIRM	1 2 3 4 5 6 7 8
Block IIF	1 2 3 4 5 6 7 8 9 10 11 12
Block III	01 02 03 04 05 06 07 08 09 10
Block IIIF	11 12 13 14 15 16 17 18 19 20
Italics indicate future missions. Signs † indicate launch failures.

v t e ← 1988 Orbital launches in 1989 1990 →
January	Kosmos 1987, Kosmos 1988, Kosmos 1989 Kosmos 1990 Kosmos 1991 Gorizont No.29L Kosmos 1992 Intelsat VA F-15 Kosmos 1993
February	Progress 40 Kosmos 1994, Kosmos 1995, Kosmos 1996, Kosmos 1997, Kosmos 1998, Kosmos 1999 Kosmos 2000 Kosmos 2001 Kosmos 2002 USA-35 Molniya-1 No.84 Kosmos 2003 Akebono Kosmos 2004 Meteor-2 No.22
March	Kosmos 2005 JCSAT-1, Meteosat 4 STS-29 (TDRS-4) Kosmos 2006 Progress 41 Kosmos 2007 Kosmos 2008, Kosmos 2009, Kosmos 2010, Kosmos 2011, Kosmos 2012, Kosmos 2013, Kosmos 2014, Kosmos 2015 USA-36
April	Tele-X Kosmos 2016 Kosmos 2017 Gran' No.33L Kosmos 2018 Foton No.5L
May	STS-30 (Magellan) Kosmos 2019 USA-37 Kosmos 2020 Kosmos 2021 Resurs-F1 No.45, Pion 1, Pion 2 Kosmos 2022, Kosmos 2023, Kosmos 2024
June	Kosmos 2025 Superbird-A, DFS Kopernikus 1 Kosmos 2026 Molniya-3 No.45 Okean-O1 No.4 USA-38 Kosmos 2027 USA-39 Kosmos 2028 Globus No.11 Resurs-F1 No.46
July	Nadezhda No.403 Kosmos 2029 Gorizont No.27L Olympus F1 Kosmos 2030 Resurs-F1 No.47, Pion 3, Pion 4 Kosmos 2031 Kosmos 2032 Kosmos 2033 Kosmos 2034
August	Kosmos 2035 STS-28 (USA-40, USA-41) TV-SAT 2, Hipparcos Resurs-F2 No.4 USA-42 Kosmos 2036 Progress M-1 Marco Polo 1 Kosmos 2037
September	USA-43, USA-44 Himawari 4 Soyuz TM-8 USA-45 Resurs-F1 No.48 Kosmos 2038, Kosmos 2039, Kosmos 2040, Kosmos 2041, Kosmos 2042, Kosmos 2043 Kosmos 2044 Kosmos 2045 USA-46 Molniya-1 No.69 Kosmos 2046 Interkosmos 24, Magion 2 Gorizont No.31L
October	Kosmos 2047 Kosmos 2048 STS-34 (Galileo) USA-47 Meteor-3 No.4 Intelsat VI F-2
November	Kosmos 2049 COBE STS-33 (USA-48) Kosmos 2050 Kosmos 2051 Kvant 2 Molniya-3 No.46 Kosmos 2052
December	Granat USA-49 Gran' No.36L Progress M-2 Kosmos 2053 Kosmos 2054
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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