Back to launches
TBD
USSF-186
Falcon HeavySpaceXLaunch Complex 39A
Monday, December 31, 2029 · 12:00 AM UTCAdd to Calendar
NextGo for Prop LoadT-35:00
Time to launch
Launch Window Confidence
46% — UncertainVehicle
Falcon Heavy
Profile →The Falcon Heavy is a variant of the Falcon 9 full thrust launch vehicle and consists of a standard Falcon 9 rocket core, with two additional boosters derived from the Falcon 9 first st...
Height70 m
LEO Payload63,800 kg
Launches801
Successes664
Provider
SpaceX
Profile →USA • Founded 2002
Space Exploration Technologies Corp., known as SpaceX, is an American aerospace manufacturer and space transport services company headquartered in Hawthorne, California. It was founded in 2002 by entrepreneur E...
Mission Brief
Classified US Space Force mission
PayloadUSSF-186
OrbitUnknown
CustomerSpaceX
Stages3
PadLaunch Complex 39A, Kennedy Space Center, FL, USA
Mission Timeline
0 / 220%Up next · Countdown
Go for Prop Load
Launch director gives the go to begin fueling
T-35:00
11:25 PM UTC
- Go for Prop LoadT-35:0011:25 PM UTC
- RP-1 Loading BeginsT-35:0011:25 PM UTC
- Stage 1 LOX Loading BeginsT-35:0011:25 PM UTC
- Stage 2 LOX Loading BeginsT-16:0011:44 PM UTC
- Engine Chill BeginsT-07:0011:53 PM UTC
- Flight Computer Final ChecksT-01:0011:59 PM UTC
- Tanks Pressurize for FlightT-01:0011:59 PM UTC
- Strongback Retract BeginsT-00:4511:59 PM UTC
- Engine Ignition Sequence StartsT-00:0311:59 PM UTC
Site lock
Launch Site
Launch Complex 39A, Kennedy Space Center, FL, USA
28.608°N, 80.604°W
Schedule History
No delays or schedule changes recorded.
