PADSpace Launch Complex 41
SITECape Canaveral SFS, FL, USA →ORBITGeosynchronous Transfer Orbit
TYPECommunications
MISSION OVERVIEW
Heaviest single payload to geosynchronous transfer orbit to that date. The satellite was to provide L-band mobile communications and wideband data transmission for Inmarsat’s global network.
LAUNCH DETAILS
VEHICLE
Atlas V 431AGENCY
Lockheed MartinMISSION
INMARSAT 4 F1
MISSION TYPE
Communications
TARGET ORBIT
Geosynchronous Transfer Orbit
LAUNCH PAD
Space Launch Complex 41LAUNCH SITE
Cape Canaveral SFS, FL, USACOUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 57d8217f-5cc3-476f-b688-9dba65e8f988
Reported date: Mar 11, 2005 at 21:42 UTC
Last synced: 21 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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VEHICLE — Atlas V 431 →
MANUFACTURER
United Launch Alliance
VARIANT
431
FLIGHTS
3
SUCCESSES
3
SUCCESS RATE
100%
Atlas V with 4m Fairing, 3 SRB, 1 Centaur upper stage engine.
FREQUENTLY ASKED QUESTIONS
When is the Atlas V 431 | INMARSAT 4 F1 launch?
The Atlas V 431 | INMARSAT 4 F1 is scheduled for Friday, March 11, 2005 at 9:42 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for INMARSAT 4 F1?
The Atlas V 431 | INMARSAT 4 F1 mission uses the Atlas V 431 rocket, manufactured by United Launch Alliance. The Atlas V 431 has flown 3 times with a 100% success rate.
Where is the Atlas V 431 | INMARSAT 4 F1 launching from?
The launch takes place from Space Launch Complex 41 at Cape Canaveral SFS, FL, USA.
What orbit is INMARSAT 4 F1 going to?
The INMARSAT 4 F1 mission is targeting Geosynchronous Transfer Orbit.
Who is launching INMARSAT 4 F1?
The Atlas V 431 | INMARSAT 4 F1 is operated by Lockheed Martin.
Can I watch the Atlas V 431 | INMARSAT 4 F1 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.
LAUNCH TIMELINE
Mar 29, 2026 01:08 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 01:08 UTC
Launch date set: Mar 11, 2005 at 21:42 UTC
NET (No Earlier Than) confirmed by Lockheed Martin
Mar 29, 2026 01:08 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 21 hours ago
●Launch Library 221 hours ago
Launch ID: 57d8217f-5cc3-476f-b688-9dba65e8f988
●Open-Meteo Weather21 hours ago
Pad weather at 28.58, -80.58
