Liftoff.
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Historical mission record
This page records Falcon 9 Block 5 | USSF-124 and its reported outcome: Launch Successful. The date above is a historical record.
Source record updated . This is a source update, not a confirmed launch time.
Check the source: SpaceX ↗ · Launch Library ↗ · Flight Club ↗
Mission status
Launch Successful
Status reported by the mission data provider.
LAUNCH SITECape Canaveral SFS, FL, USA
Mission
2 satellites, one by L3Harris and the other by Northrop Grumman, will be launched as the Hypersonic and Ballistic Tracking Space Sensor (HBTSS) mission for the US Missile Defense Agency. These satellites have improved sensitivity to detect and track hypersonic missiles with fainter signatures. 4 SDA Tranche 0 Tracking Layer missile warning satellites by L3Harris will also be on board.
- Launch vehicle
- Falcon 9 Block 5
- Mission type
- Government/Top Secret
- Destination orbit
- Low Earth Orbit
- Launch pad
- Space Launch Complex 40
- Provider
- SpaceX
- Recovery
- Return to Launch Site, The Falcon 9 first stage B1078 has landed back at the launch site after its 7th flight. +1
The vehicle
Published configuration and flight history.
Launch vehicle
Falcon 9 Block 5
Falcon 9 is a two-stage rocket designed and manufactured by SpaceX for the reliable and safe transport of satellites and the Dragon spacecraft into orbit. The Block 5 variant is the fifth major interval aimed at improving upon the ability for rapid reusability.
- Height
- 70 m
- Diameter
- 3.65 m
- Stages
- 2
- Recorded launches
- 537
- First flight
- 2018-05-11
Recorded timing
This is a mission record, not an upcoming calendar appointment.
4h 30m windowPublished target
WINDOW OPENS
WINDOW CLOSES
Target ·
The target marker shows its position within the published window. The schedule may change before launch.
Weather concerns
Thick Cloud Layers Rule
Flight timeline
Planned sequence, not live telemetry. Times are relative to the launch target.
- T−00:38:00
GO for Prop Load
- T−00:35:00
Stage 1 LOX Load
- T−00:35:00
Prop Load
- T−00:16:00
Stage 2 LOX Load
- T−00:07:00
Engine Chill
- T−00:01:00
Startup
Show the full sequence (21 events)
- T−00:01:00
Tank Press
- T−00:00:45
GO for Launch
- T−00:00:03
Ignition
- T+00:00:00
Liftoff
- T+00:01:12
Max-Q
- T+00:02:16
MECO
- T+00:02:19
Stage 2 Separation
- T+00:02:27
SES-1
- T+00:02:32
Booster Boostback Burn Startup
- T+00:03:08
Fairing Separation
- T+00:03:26
Booster Boostback Burn Shutdown
- T+00:06:16
Entry Burn Startup
- T+00:06:34
Entry Burn Shutdown
- T+00:07:32
Stage 1 Landing Burn
- T+00:08:01
Stage 1 Landing
Launch site & orbit
Cape Canaveral SFS, FL, USA
The mission in perspective
Launch site & orbit
Explore the launch pad, then pull back to see the shape of the destination orbit.
Understand this orbit
Coverage & sources
Links supplied by the mission data provider.
Coverage and times may change.
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