Recorded mission
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SpaceX
Falcon 9 Block 5 | USSF-259
Recorded mission coverage
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Mission brief
The flight at a glance.
USSF-259 is a classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites based on SpaceX’s Starshield satellite bus, based on locations of ascent rocket stage drop zones being fits with previous SDA Transport Layer launches.
Open the full mission →Published flight sequence
Know what comes next.
Planned timings relative to the target. These steps do not indicate live progress.
- T−00:38:00
GO for Prop Load
- T−00:35:00
Prop Load
- T−00:35:00
Stage 1 LOX Load
- T−00:16:00
Stage 2 LOX Load
- T−00:07:00
Engine Chill
- T−00:01:00
Startup
See all 19 published steps ↓
- T−00:01:00
Tank Press
- T−00:00:45
GO for Launch
- T−00:00:03
Ignition
- T+00:00:00
Liftoff
- T+00:01:07
Max-Q
- T+00:02:26
MECO
- T+00:02:30
Stage 2 Separation
- T+00:02:36
SES-1
- T+00:02:57
Fairing Separation
- T+00:06:03
Entry Burn Startup
- T+00:06:24
Entry Burn Shutdown
- T+00:07:58
Stage 1 Landing Burn
- T+00:08:20
Stage 1 Landing