USA-239

USA-239
	A Block IIF GPS satellite
Mission type	Navigation
Operator	US Air Force
COSPAR ID	2012-053A
SATCAT no.	38833
Mission duration	12 years (planned)
Spacecraft properties
Spacecraft	GPS SVN-65 (IIF-3)
Spacecraft type	GPS Block IIF
Manufacturer	Boeing
Launch mass	1,630 kilograms (3,590 lb)
Start of mission
Launch date	4 October 2012, 12:10 UTC
Rocket	Delta IV-M+(4,2), D361
Launch site	Cape Canaveral SLC-37B
Contractor	ULA
Orbital parameters
Reference system	Geocentric
Regime	Medium Earth; (Semi-synchronous)
Perigee altitude	20,132 kilometers (12,509 mi)
Apogee altitude	20,231 kilometers (12,571 mi)
Inclination	54.87 degrees
Period	717.96 minutes

USA-239, also known as GPS IIF-3, GPS SVN-65, and Navstar-67 is an American navigation satellite which forms part of the Global Positioning System. It was the third of twelve Block IIF satellites to be launched.^[2]

Built by Boeing and launched by United Launch Alliance, USA-239 was launched at 12:10 UTC on 4 October 2012, atop a Delta IV carrier rocket, flight number D361, flying in the Medium+(4,2) configuration.^[3] The launch took place from Space Launch Complex 37B at the Cape Canaveral Air Force Station,^[5] and placed USA-239 directly into medium Earth orbit.^[4] The rocket's second stage failed to provide the expected full thrust in all of its three burns due to a leak above the narrow throat portion of the thrust chamber, however the stage had enough propellant margins to put the satellite in the correct orbit.^[6]

As of 18 February 2014, USA-239 was in an orbit with a perigee of 20,231 kilometers (12,571 mi), an apogee of 20,132 kilometers (12,509 mi), a period of 717.96 minutes, and 54.87 degrees of inclination to the equator.^[4] It is used to broadcast the PRN 24 signal, and operates in slot 1 of plane A of the GPS constellation. The satellite has a design life of 15 years and a mass of 1,630 kilograms (3,590 lb). ^[2] As of 2019 it remains in service.

References

^ ^a ^b "Navstar 67". US National Space Science Data Center. Retrieved 18 February 2014.
^ ^a ^b ^c Krebs, Gunter. "GPS-2F (Navstar-2F)". Gunter's Space Page. Retrieved 18 February 2014.
^ ^a ^b ^c McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 18 February 2014.
^ ^a ^b ^c ^d ^e ^f McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 18 February 2014.
^ McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. Retrieved 18 February 2014.
^ Ray, Justin (9 Dec 2012). "Investigation finds Delta 4 rocket engine issue". Spaceflight Now. Retrieved 18 February 2014.

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[NSSDC-1] "Navstar 67". US National Space Science Data Center. Retrieved 18 February 2014.

[GSP-2] Krebs, Gunter. "GPS-2F (Navstar-2F)". Gunter's Space Page. Retrieved 18 February 2014.

[LL-3] McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 18 February 2014.

[satcat-4] ^ ^a ^b ^c ^d ^e ^f McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 18 February 2014.

[lvdb-5] McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. Retrieved 18 February 2014.

[sfn-d361-6] Ray, Justin (9 Dec 2012). "Investigation finds Delta 4 rocket engine issue". Spaceflight Now. Retrieved 18 February 2014.

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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	01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
Italics indicate future missions. Signs † indicate launch failures.

v t e ← 2011 Orbital launches in 2012 2013 →
January	Ziyuan III-01, VesselSat-2 Fengyun 2-07 USA-233 Progress M-14M
February	Navid LARES, ALMASat-1, Xatcobeo, UniCubeSat-GG, ROBUSTA, e-st@r, Goliat, MaSat-1, PW-Sat SES-4 Compass-G5 MUOS-1
March	Edoardo Amaldi ATV Intelsat 22 Kosmos 2479 Apstar 7
April	USA-234 Kwangmyŏngsŏng-3 Progress M-15M YahSat-1B RISAT-1 Compass-M3, Compass-M4
May	USA-235 Tianhui 1B Yaogan 14, Tiantuo 1 Soyuz TMA-04M JCSAT-13, Vinasat-2 Kosmos 2480 Shizuku, Kompsat 3, SDS-4, Horyu 2 Nimiq 6 SpaceX COTS Demo Flight 2, New Frontier Fajr ChinaSat 2A Yaogan 15
June	Intelsat 19 NuSTAR Shenzhou 9 USA-236 / Quasar 18 USA-237 / Orion 8
July	EchoStar XVII, MSG-3 SES-5 Soyuz TMA-05M Kounotori 3 (Raiko, We-Wish, Niwaka, TechEdSat, F-1) Kanopus-V1, BelKA-2, Zond-PP, TET-1, exactView-1 Tianlian I-03 Gonets-M No.3, Gonets-M No.4, Kosmos 2481, MiR
August	Progress M-16M (Sfera-53) Intelsat 20, HYLAS 2 Telkom-3, Ekspress-MD2 Intelsat 21 RBSP-A, RBSP-B
September	SPOT 6, PROITERES, mRESINS USA-238, SMDC-ONE 1.1, SMDC-ONE 1.2, AeroCube 4, AeroCube 4A, AeroCube 4B, Aeneas, Re, CSSWE, CP5, CXBN, CINEMA 1 MetOp-B Compass-M5, Compass-M6 Astra 2F, GSAT-10 VRSS-1
October	USA-239 SpaceX CRS-1, Orbcomm-2 David, Sif Shijian 9-01, Shijian 9-02 Intelsat 23 Soyuz TMA-06M Compass G6 Progress M-17M
November	Luch 5B, Yamal-300K Eutelsat 21B, Star One C3 Meridian 6 Huanjing 1C EchoStar XVI Yaogan 16A, Yaogan 16B, Yaogan 16C ChinaSat 12
December	Pléiades-HR 1B Eutelsat 70B Yamal-402 USA-240 Kwangmyŏngsŏng-3 Unit 2 Göktürk-2 Soyuz TMA-07M Skynet 5D, Mexsat Bicentenario
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).