PADSpace Launch Complex 4E
SITEVandenberg SFB, CA, USA →ORBITLow Earth Orbit
TYPECommunications
PROGRAMIridium Constellation
MISSION OVERVIEW
SpaceX’s Falcon 9 rocket will deliver 10 satellites to low Earth orbit for Iridium, a global leader in mobile voice and data satellite communications. This is the fourth set of 10 satellites in a series of 75 total satellites that SpaceX will launch for Iridium’s next generation global satellite constellation, Iridium® NEXT.
LAUNCH DETAILS
VEHICLE
Falcon 9AGENCY
SpaceXMISSION
Iridium-4
MISSION TYPE
Communications
TARGET ORBIT
Low Earth Orbit
LAUNCH PAD
Space Launch Complex 4ELAUNCH SITE
Vandenberg SFB, CA, USAPROGRAM
Iridium Constellation
COUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: dd92253d-5efb-426e-b6ba-bb934a4a7851
Reported date: Dec 23, 2017 at 01:27 UTC
Last synced: 3 hours ago
SPACEX API
Cross-referenced with community SpaceX data
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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BOOSTER — B1036 →
#2THIS FLIGHT
2TOTAL FLIGHTS
1/1LANDINGS
180dTURNAROUND
FLIGHT-PROVEN BOOSTER
First flight: Jun 25, 2017Previous flight: Jun 25, 2017
PAYLOAD →
Iridium NEXT NEXT
Mobile Communications
Iridium CommunicationsOPERATOR
LEO · 780 kmORBIT
860 kgMASS
4TOTAL LAUNCHES
LIVE TRACKING AVAILABLE
VEHICLE — Falcon 9 →
MANUFACTURER
SpaceX
VARIANT
Full Thrust
FLIGHTS
25
SUCCESSES
24
SUCCESS RATE
96%
The Full Thrust variants first stage includes all systems necessary for an operational re-use of stages while the second stage is operated as an expendable rocket stage.
FREQUENTLY ASKED QUESTIONS
When is the Falcon 9 Full Thrust | Iridium-4 launch?
The Falcon 9 Full Thrust | Iridium-4 is scheduled for Saturday, December 23, 2017 at 1:27 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 Iridium-4?
The Falcon 9 Full Thrust | Iridium-4 mission uses the Falcon 9 rocket, manufactured by SpaceX. The Falcon 9 has flown 25 times with a 96% success rate.
Where is the Falcon 9 Full Thrust | Iridium-4 launching from?
The launch takes place from Space Launch Complex 4E at Vandenberg SFB, CA, USA.
What orbit is Iridium-4 going to?
The Iridium-4 mission is targeting Low Earth Orbit.
Who is launching Iridium-4?
The Falcon 9 Full Thrust | Iridium-4 is operated by SpaceX. It is part of the Iridium Constellation program.
Can I watch the Falcon 9 Full Thrust | Iridium-4 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 28, 2026 20:33 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 28, 2026 20:33 UTC
Launch date set: Dec 23, 2017 at 01:27 UTC
NET (No Earlier Than) confirmed by SpaceX
Mar 28, 2026 20:33 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 3 hours ago
●Launch Library 23 hours ago
Launch ID: dd92253d-5efb-426e-b6ba-bb934a4a7851
●Open-Meteo Weather4 hours ago
Pad weather at 34.63, -120.61
●YouTube Video Search2 weeks ago
1 video discovered
