LIVE NOW Falcon 9 Block 5 | Starlink Group 10-44 SpaceX
UNITED LAUNCH ALLIANCE

Delta IV M+(4,2) | GPS IIF-6 (USA-251)

SUCCESSMay 17, 2014 at 00:03 UTCDelta IV M+(4,2) →
PADSpace Launch Complex 37B
SITECape Canaveral SFS, FL, USA →
ORBITMedium Earth Orbit
TYPENavigation
PROGRAMGlobal Positioning System

GPS IIF (Global Positioning System) or Navstar-2F (Navigation System using Timing And Ranging) satellites are the fourth evolution stage of the second generation of the GPS satellites. Improvements included an extended design life of 12 years, faster processors with more memory, and a new civil signal on a third frequency.

MISSION
GPS IIF-6
MISSION TYPE
Navigation
TARGET ORBIT
Medium Earth Orbit
PROGRAM
Global Positioning System
COUNTRY
USA
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: f8d9fe33-b8ef-4881-9618-3bdf27f44707
Reported date: May 17, 2014 at 00:03 UTC
Last synced: 1 minute ago
This launch date and time are confirmed by the launch provider. Countdown is active.
Loading weather…
Select a location to check if this launch is visible from where you are
MANUFACTURER
United Launch Alliance
VARIANT
M+(4,2)
FLIGHTS
15
SUCCESSES
15
SUCCESS RATE
100%
When is the Delta IV M+(4,2) | GPS IIF-6 (USA-251) launch?
The Delta IV M+(4,2) | GPS IIF-6 (USA-251) is scheduled for Saturday, May 17, 2014 at 12:03 AM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for GPS IIF-6?
The Delta IV M+(4,2) | GPS IIF-6 (USA-251) mission uses the Delta IV M+(4,2) rocket, manufactured by United Launch Alliance. The Delta IV M+(4,2) has flown 15 times with a 100% success rate.
Where is the Delta IV M+(4,2) | GPS IIF-6 (USA-251) launching from?
The launch takes place from Space Launch Complex 37B at Cape Canaveral SFS, FL, USA.
What orbit is GPS IIF-6 going to?
The GPS IIF-6 mission is targeting Medium Earth Orbit.
Who is launching GPS IIF-6?
The Delta IV M+(4,2) | GPS IIF-6 (USA-251) is operated by United Launch Alliance. It is part of the Global Positioning System program.
Can I watch the Delta IV M+(4,2) | GPS IIF-6 (USA-251) launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
Mar 29, 2026 00:03 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 00:03 UTC
Launch date set: May 17, 2014 at 00:03 UTC
NET (No Earlier Than) confirmed by United Launch Alliance
Mar 29, 2026 00:03 UTC
Launch completed successfully
Updated via Launch Library 2
Last data sync: 1 minute ago
Launch Library 21 minute ago
Launch ID: f8d9fe33-b8ef-4881-9618-3bdf27f44707
Open-Meteo Weather23 minutes ago
Pad weather at 28.53, -80.56