USA-190

{{Short description|American navigation satellite used for GPS}}

{{Infobox spaceflight

| name = USA-190

| image = GPS-IIRM.jpg

| image_caption = A Block IIRM GPS satellite

| insignia =

| mission_type = Navigation

| operator = US Air Force

| COSPAR_ID = 2006-042A{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2006-042A|title=GPS 2R-15|publisher=US National Space Science Data Center|access-date=11 July 2012}}

| SATCAT = 29486

| mission_duration = 10 years (planned)

| spacecraft =

| spacecraft_type = GPS Block IIRM

| spacecraft_bus = AS-4000

| manufacturer = Lockheed Martin

| launch_mass = {{convert|2032|kg}}

| dimensions =

| power =

| launch_date = {{start-date|25 September 2006, 18:50|timezone=yes}} UTC

| launch_rocket = {{nowrap|Delta II 7925-9.5,}} D318

| launch_site = Cape Canaveral SLC-17A

| entered_service =

| disposal_type =

| deactivated =

| orbit_slot =

| orbit_epoch =

| orbit_reference = Geocentric

| orbit_regime = Medium Earth
(Semi-synchronous)

| orbit_periapsis = {{convert|20018|km|sp=us}}

| orbit_apoapsis = {{convert|20343|km|sp=us}}

| orbit_inclination = 55 degrees

| orbit_period = 717.9 minutes

| apsis = gee

}}

USA-190, also known as GPS IIR-15(M), GPS IIRM-2 and GPS SVN-52, is an American navigation satellite which forms part of the Global Positioning System. It was the second of eight Block IIRM satellites to be launched, and the fifteenth of twenty one Block IIR satellites overall. It was built by Lockheed Martin, using the AS-4000 satellite bus.

USA-190 was launched at 18:50 UTC on 25 September 2006, atop a Delta II carrier rocket, flight number D318, flying in the 7925-9.5 configuration.{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|publisher=Jonathan's Space Page|first=Jonathan|last=McDowell|author-link=Jonathan McDowell|access-date=11 July 2012}} The launch took place from Space Launch Complex 17A at the Cape Canaveral Air Force Station,{{cite web|url=http://planet4589.org/space/lvdb/list2.html|title=Launch List|publisher=Jonathan's Space Page|work=Launch Vehicle Database|first=Jonathan|last=McDowell|access-date=11 July 2012|archive-date=15 August 2020|archive-url=https://web.archive.org/web/20200815040340/http://planet4589.org/space/lvdb/list2.html|url-status=dead}} and placed USA-190 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37FM apogee motor.{{cite web|url=http://space.skyrocket.de/doc_sdat/navstar-2rm.htm|title=GPS-2RM (Navstar-2RM)|first=Gunter|last=Krebs|work=Gunter's Space Page|access-date=11 July 2012}}

By 25 November 2006, USA-190 was in an orbit with a perigee of {{convert|20018|km|sp=us}}, an apogee of {{convert|20343|km|sp=us}}, a period of 717.9 minutes, and 55 degrees of inclination to the equator.{{cite web|url=http://planet4589.org/space/log/satcat.txt|title=Satellite Catalog|publisher=Jonathan's Space Page|first=Jonathan|last=McDowell|access-date=11 July 2012}} It is used to broadcast the PRN 31 signal, and operates in slot 2 of plane A of the GPS constellation. The satellite has a mass of {{convert|2032|kg}}, and a design life of 10 years. As of 2012 it remains in service.