USA-260

Short description: American navigation satellite used for GPS

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 Air Force Station 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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