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EVERYTHINGSPACE

EVERYTHING SPACE · MISSION CONTROL · FIRING ROOM

Falcon 9 Block 5 | USSF-153

Go for Launch · SpaceX · Vandenberg SFB

THE BIG BOARDFALCON 9 BLOCK 5 | USSF-153GO

Flight dynamics

VehicleFalcon 9 Block 5
PadSpace Launch Complex 4E
Window15:37 UTC → 18:37 UTC
Provider record726 flights
Thu, 10 Sep 2026 15:37:00 GMT

NO BROADCAST ANNOUNCED — MANY FLIGHTS ARE NEVER STREAMED

Sequence of events

T−38:00GO for Prop Load
T−35:00Stage 1 LOX Load
T−35:00Prop Load
T−16:00Stage 2 LOX Load
T−07:00Engine Chill
T−01:00Tank Press
T−01:00Startup
Go for Launch · SpaceX · Vandenberg SFB, CA, USA· every number on this board is Launch Library’s

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The watch party

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Trajectory · Flight Club simulation

Where It Is Aimed

Flight Club profile · not measured
Launch azimuth40.9°flying north-east
Downrange landing593 kmcomputed from the pad
RecoveryASDS29.91°, -117.66°

Projected, not measured. The azimuth and exclusion zones are Flight Club’s published profile for this mission, and the recovery vessel is stationed at those coordinates — but this flight has not happened, and a hold, a re-aim or a scrub changes it. Downrange distance is computed from the pad. No altitude or velocity here: a flight that has already flown can have a real ascent chart, and this one has not flown yet.

Full sequence, ticking

Flight Plan

19 milestones · Launch Library 2

Every milestone the provider published for this flight.

  1. T-38:00GO for Prop LoadLaunch director verifies go for propellant load
  2. T-35:00Stage 1 LOX LoadStart of liquid oxygen loading in the first stage
  3. T-35:00Prop LoadStart of propelland loading
  4. T-16:00Stage 2 LOX LoadStart of liquid oxygen loading in the second stage
  5. T-7:00Engine ChillStart of engine chilling
  6. T-1:00Tank PressFuel tanks are pressurized to flight levels
  7. T-1:00StartupThe onboard computer takes control over the countdown and runs last checks
  8. T-0:45GO for LaunchLaunch director verifies go for launch
  9. T-0:03IgnitionStart of the engine ignition sequence
  10. T+0:00LiftoffFirst upwards movement of the rocket
  11. T+1:07Max-QMaximum dynamic pressure
  12. T+2:26MECOCut-off of the main engine
  13. T+2:29Stage 2 SeparationSeparation of the second stage from the first
  14. T+2:35SES-1First start of the second engine
  15. T+2:55Fairing SeparationSeparation of the payload fairing
  16. T+6:06Entry Burn StartupStart of the atmospheric entry burn
  17. T+6:30Entry Burn ShutdownEnd of the atmospheric entry burn
  18. T+8:04Stage 1 Landing BurnStart of the first stage landing burn
  19. T+8:26Stage 1 LandingLanding of the first stage

Planned times, published by the launch provider and carried by Launch Library 2 — not measurements. No public feed streams a rocket’s altitude or velocity during ascent, so this site does not show any. Times can move, and a hold moves everything after it.

Ascent profile

Shown when a Flight Club simulation exists for this mission — never another flight’s.

Schedule, vehicle, pad and sequence: Launch Library 2 · trajectory and ascent: Flight Club · the clocks run on yours · data refreshes each minute