USA-260

A Block IIF GPS satellite

Mission type| Navigation
Operator| US Air Force
COSPAR ID| 2015-013A[1]
SATCAT no.| 40534[1]
Mission duration| 12 years (planned)
Spacecraft properties
Spacecraft| GPS SVN-71 (IIF-9)
Spacecraft type| GPS Block IIF
Manufacturer| Boeing
Launch mass| 1,630 kilograms (3,590 lb)[2]
Start of mission
Launch date| 25 March 2015, 18:36 (2015-03-25UTC18:36Z) UTC
Rocket| Delta IV-M+(4,2), D371[3]
Launch site| Cape Canaveral SLC-37B[3]
Contractor| ULA
Orbital parameters
Reference system| Geocentric
Regime| Medium Earth
(Semi-synchronous)
Perigee altitude| 20,445 km (12,704 mi)[4]
Apogee altitude| 20,468 km (12,718 mi)[4]
Inclination| 55.00 degrees[4]
Period| 729.14 minutes[4]
Epoch| 25 March 2015, 23:57:44 UTC

USA-260, also known as GPS IIF-9, GPS SVN-71 and NAVSTAR 73, is an American Satellite navigation which forms part of the Global Positioning System. It was the ninth of twelve Block IIF satellites to be launched.[2]

## Launch

Built by Boeing and launched by United Launch Alliance, USA-260 was launched at 18:36 UTC on 25 March 2015, atop a Delta IV carrier rocket, flight number D370, 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-260 directly into medium Earth orbit.[4]

## Orbit

On 25 March 2015, USA-260 was in an orbit with a perigee of 20,445 kilometers (12,704 mi), an apogee of 20,468 kilometers (12,718 mi), a period of 729.14 minutes, and 55.00 degrees of inclination to the equator.[4] It is used to broadcast the PRN 26 signal, and operates in slot 5 of plane B of the GPS constellation. The satellite has a design life of 15 years and a mass of 1,630 kilograms (3,590 lb). [2] It is currently in service following commissioning on April 20, 2015.[6]

## References

1. ↑ 1.0 1.1 "Navstar 73". US National Space Science Data Center. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2015-013A.
2. ↑ 2.0 2.1 2.2 Krebs, Gunter. "GPS-2F (Navstar-2F)". Gunter's Space Page. http://space.skyrocket.de/doc_sdat/navstar-2f.htm.
3. ↑ 3.0 3.1 3.2 McDowell, Jonathan. "Launch Log". Jonathan's Space Page. http://planet4589.org/space/log/launchlog.txt.
4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. http://planet4589.org/space/log/satcat.txt.
5. ↑ McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. http://planet4589.org/space/lvdb/list2.html.
6. ↑ "NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015028". United States Coast Guard. http://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2015028.

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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.

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Orbital launches in 2015

January|

SpaceX CRS-5 (Flock-1d' × 2 * AESP-14) – MUOS-3 – SMAP * FIREBIRD II A, B * GRIFEX * ExoCube

February|

IGS-Radar Spare – Inmarsat 5-F2 – Fajr – DSCOVR – Progress M-26M – Kosmos 2503 / Bars-M No. 1

March|

ABS-3A * Eutelsat 115 West B – WADIS-2 – MMS – Ekspress AM7 – USA-260 / GPS IIF-9 – KOMPSat-3A – IGS-Optical 5 – Soyuz TMA-16M – Galileo FOC-3, FOC-4 – IRNSS-1D – BeiDou I1-S – Gonets-M 11, 12, 13 * Kosmos 2504

April|

SpaceX CRS-6 (Arkyd-3R * AggieSat 4 * Bevo 2 * Flock-1e × 14) – Thor 7 * SICRAL-2 – TürkmenÄlem 52°E / MonacoSAT – Progress M-27M

May|

Mexsat-1 – USA-261 / X-37 OTV-4 * LightSail-1 * USS Langley * BRICSat-P * ParkinsonSat * GEARRS-2 * AeroCube 8A, 8B * OptiCube 1, 2, 3 – DirecTV-15 * SKY México-1

June|

Kosmos 2505 / Kobalt-M – Sentinel-2A – Kosmos 2506 / Persona No.3 – Gaofen 8 – SpaceX CRS-7 (Flock-1f × 8)

July|

Progress M-28M – UK-DMC 3 × 3 * CBNT-1 * DeOrbitSail – USA-262 / GPS IIF-10 – Star One C4 * MSG-4 – Soyuz TMA-17M – USA-263 / WGS-7 – BeiDou M1-S, M2-S

August|

HTV-5 / Kounotori 5 (SERPENS * S-CUBE * Flock-2b × 14 * AAUSAT 5 * GOMX 3) – Eutelsat 8 West B * Intelsat 34 – Yaogan 27 – GSAT-6 / INSAT-4E – Inmarsat 5-F3

September|

Soyuz TMA-18M – MUOS-4 – Galileo FOC-5, FOC-6 – TJSSW-1 – Gaofen 9 – Ekspress AM8 – XY-2 * Tiantuo-3 * ZDPS 2A, 2B * Xiwang-2 × 6 * DCBB * LilacSat-2 * NUDT-Phone-Sat * Xingchen × 4 * NS-2 * Zijing × 2 – Kosmos 2507, 2508, 2509 / Strela-3M × 3 – Pujian-1 * Tianwang 1A, 1B, 1C – Astrosat * LAPAN-A2 * ExactView 9 * Lemur-2 × 4 – BeiDou I2-S – NBN-Co 1A * ARSAT-2

October|

Progress M-29M – Mexsat-2 – Jilin-1 * Lingqiao A * Lingqiao B * LQSAT – USA-264 / NOSS Intruder × 2 / NROL-55 * AeroCube-5c, 7 * SNaP-3 × 3 * PropCube × 2 * SINOD-D × 2 * ARC-1 * BisonSat * AMSAT Fox-1 * LMRST-Sat – APStar-9 – Türksat 4B – Tianhui 1C – USA-265 / GPS IIF-11

November|

Chinasat 2C – HiakaSat * EDSN × 8 * PrintSat * Argus * STACEM * Supernova-Beta – Yaogan 28 – Arabsat 6B * GSAT-15 – Kosmos 2510 / EKS-1 / Tundra-11L – LaoSat-1 – Telstar 12V – Yaogan 29

December|

LISA Pathfinder – Kosmos 2511 / Kanopus-ST * Kosmos 2512 / KYuA-1 – Cygnus CRS OA-4 (Flock-2e × 12 * CADRE * MinXSS 1 * Nodes × 2 * STMSat 1 * SIMPL) – ChinaSat 1C – Elektro-L No.2 – Kosmos 2513 / Garpun-12L – Soyuz TMA-19M – TeLEOS-1 * VELOX-C1 * Kent Ridge 1 * VELOX 2 * Galassia * Athenoxat-1 – DAMPE – Galileo FOC-8, FOC-9 – Progress MS-01 – Orbcomm-2 × 11 – Ekspress-AMU1 – Gaofen 4

Launches are separated by dashes ( – ), payloads by dots ( * ), multiple names for the same satellite by slashes ( / ). Cubesats are smaller.
Crewed flights are bolded. Launch failures are in italics. Payloads deployed from other spacecraft are (enclosed in brackets).

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