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USA-242 - Wikipedia

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USA-242
Spacecraft properties
Artist's impression of a GPS IIF satellite

Mission type	Navigation
Operator	US Air Force
COSPAR ID	2013-023A
SATCAT no.	39166
Mission duration	12 years (planned)


Spacecraft	GPS SVN-66 (IIF-4)
Spacecraft type	GPS Block IIF
Manufacturer	Boeing
Launch mass	1,630 kilograms (3,590 lb)^[1]


Start of mission
Launch date	15 May 2013, 21:38 (2013-05-15UTC21:38Z) UTC
Rocket	Atlas V 401, AV-039
Launch site	Cape Canaveral SLC-41
Contractor	ULA


Orbital parameters
Reference system	Geocentric
Regime	Medium Earth (Semi-synchronous)
Perigee altitude	20,459 kilometers (12,713 mi)^[2]
Apogee altitude	20,459 kilometers (12,713 mi)^[2]
Inclination	55 degrees^[2]
Period	12 hours
Epoch	Target

USA-242, also known as GPS IIF-4, GPS IIF SV-5, Navstar-68 and Vega,^[3] is an American navigation satellite which was launched on 15 May 2013 and became operational on 21 June 2013.^[4] The fourth Block IIF GPS satellite, it forms part of the Global Positioning System.

USA-242 is a 1,630-kilogram (3,590 lb) spacecraft, built by Boeing with a design life of 15 years.^[1] It operates from a semi-synchronous medium Earth orbit, at an altitude of 20,459 kilometers (12,713 mi) an inclination of 55 degrees,^[2] in slot 5 of plane C of the GPS constellation.^[5] The new satellite was originally intended to replace the seventeen-year-old USA-117 satellite,^[6] but currently both USA-117 (SVN-33) and USA-242 (SVN-66) are in active use.^[7] USA-242 broadcasts its navigation signals using the PRN-27 signal modulation.

United Launch Alliance conducted the launch of GPS IIF-4, using an Atlas V 401 carrier rocket. Launch took place from Space Launch Complex 41 at the Cape Canaveral Air Force Station, with liftoff occurring at 21:38 UTC on 15 May 2013, the beginning of an 18-minute launch window. The launch marked the first time since 1985 that a GPS satellite had launched on an Atlas rocket, or indeed any rocket other than a Delta.^[6]

References

^ ^a ^b Krebs, Gunter. "GPS-2F (Navstar-2F)". Gunter's Space Page. Retrieved 15 May 2013.
^ ^a ^b ^c ^d "GPS IIF-4 Atlas V Mission Overview" (PDF). United Launch Alliance. Archived from the original (PDF) on 16 September 2013. Retrieved 15 May 2013.
^ McDowell, Jonathan. "Issue 679 (draft)". Jonathan's Space Report. Retrieved 16 May 2013.
^ "NANU 2013035". United States Coast Guard. Retrieved 25 June 2013.
^ Ray, Justin. "Mission Status Center". Spaceflight Now. Retrieved 15 May 2013.
^ ^a ^b Graham, William (15 May 2013). "ULA Atlas V successfully [sic] deploys new GPS satellite". NASASpaceflight.com. Retrieved 16 May 2013.
^ "GPS Constellation Status". United States Coast Guard. Retrieved 25 June 2013.

v t e ← 2012 Orbital launches in 2013 2014 →
January	Kosmos 2482, Kosmos 2483, Kosmos 2484 JSE Reda 4, Jissho Eisei STSat-2C TDRS-11
February	Intelsat 27 Globalstar M078, M087, M093, M094, M095, M096 Azerspace-1/Africasat-1a, Amazonas 3 Progress M-18M Landsat 8 SARAL, Sapphire, NEOSSat, UniBRITE-1, TUGSAT-1, AAUSat-3, STRaND-1
March	SpaceX CRS-2 USA-241 Satmex 8 Soyuz TMA-08M
April	Anik G1 Bion-M No.1 (Aist 2, BeeSat-2, BeeSat-3, SOMP, Dove-2, OSSI-1) Cygnus Mass Simulator, Dove 1, Alexander, Graham, Bell Progress M-19M Gaofen 1, TurkSat-3USat, NEE-01 Pegaso, CubeBug-1 Kosmos 2485
May	Zhongxing 11 PROBA-V, VNREDSat-1, ESTCube-1 Eutelsat 3D USA-242 USA-243 Soyuz TMA-09M
June	SES-6 Albert Einstein ATV Kosmos 2486 / Persona №2 Shenzhou 10 Resurs-P No.1 O3b × 4 (PFM, FM2, FM4, FM5) Kosmos 2487 / Kondor № 202 IRIS
July	IRNSS-1A Uragan-M 48, 49, 50 Shijian XI-05 MUOS-2 Shijian 15, Shiyan 7, Chuangxin 3 Inmarsat-4A F4, INSAT-3D Progress M-20M
August	Kounotori 4 (TechEdSat-3, ArduSat-1, ArduSat-X, PicoDragon) USA-244 Arirang-5 USA-245 Eutelsat 25B / Es'hail 1, GSAT-7 / INSAT-4F Amos-4
September	Yaogan 17 A, B, C LADEE Gonets-M No.5, Gonets-M No.6, Gonets-M No.7 Hisaki USA-246 Cygnus Orb-D1 Fengyun III-03 Kuaizhou-1 Soyuz TMA-10M CASSIOPE, CUSat, POPACS 1, 2, 3, DANDE Astra 2E
October	Shijian 16 Sirius FM-6 Yaogan 18
November	Mars Orbiter Mission Soyuz TMA-11M Globus-1M No.13L MAVEN ORS-3, STPSat-3, Black Knight 1, CAPE-2, ChargerSat-1, COPPER, DragonSat-1, Firefly (satellite), Ho'oponopono-2, Horus, KySat-2, NPS-SCAT, ORSES, ORS Tech 1, 2, PhoneSat 2.4, Prometheus × 8, SENSE A, B, SwampSat, TJ³Sat, Trailblazer-1, Vermont Lunar CubeSat Yaogan 19 DubaiSat-2, STSAT-3, SkySat-1, UniSat-5 (Dove 4, ICube-1, HumSat-D, PUCP-Sat 1 (Pocket-PUCP), BeakerSat-1, $50SAT, QBScout-1, WREN), AprizeSat 7, 8, Lem, WNISat-1, GOMX-1, CubeBug-2, Delfi-n3Xt, Dove 3, First-MOVE, FUNcube-1, HINCube-1, KHUSat-1, KHUSat-2, NEE-02 Krysaor, OPTOS, Triton 1, UWE-3, VELOX-P2, ZACUBE-1, BPA-3 Swarm A, B, C Shiyan 5 Progress M-21M
December	Chang'e 3 (Yutu) SES-8 USA-247 / Topaz, TacSat-6 Inmarsat-5 F1 CBERS-3† Gaia Túpac Katari 1 Kosmos 2488 / Strela-3M 7, Kosmos 2489 / Strela-3M 8, Kosmos 2490 / Strela-3M 9, Kosmos-2491 Ekspress AM5 Aist 1, Kosmos 2491 / SKRL-756 1, Kosmos 2492 / SKRL-756 2
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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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.