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USSF-⁠317

Falcon 9Vandenberg, California

T minus 9 days 3 hours 33 minutes
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Mission

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 rocket stage drop zones being exact fits with previous Starlink Group 15 launches.

Falcon 9 will launch USSF-⁠317 from Space Launch Complex 4E (SLC-⁠4E) at Vandenberg Space Force Base in California. Following stage separation, the first stage will land on the Of Course I Still Love You droneship, about 574 km downrange.

Liftoff
Thu 20:23 PST at the pad
Window
– 4 h
Rocket
Falcon 9 Block 5SpaceX
Destination
Low Earth Orbit
Launch site
Space Launch Complex 4E, Vandenberg, California71st launch from this pad in 20263 days after the last
Latest update
GO for launch.

11th

Flight of B1100

574km

Downrange landing, OCISLY

127th

SpaceX launch of 2026

48days

Since B1100’s last flight

Countdown

All times approximate, in your time zone (CET)Timeline: The Space Devs

  1. T minus 38 minutesGO for Prop Load
  2. T minus 35 minutesProp Load
  3. T minus 35 minutesStage 1 LOX Load
  4. T minus 16 minutesStage 2 LOX Load
  5. T minus 7 minutesEngine Chill
  6. T minus 1 minuteTank Press
  7. T minus 1 minuteStartup
  8. T minus 45 secondsGO for Launch
  9. T minus 3 secondsIgnition

Flight

From liftoff to orbit

  1. SLC-4E
  2. OCISLY574 km downrange
  3. LiftoffT+00:00:00
  4. Max QT+00:01:07
  5. Stage separationT+00:02:29
  6. FairingT+00:02:58
  7. LandingT+00:08:11
  1. SLC-4E
  2. OCISLY574 km downrange
  3. LiftoffT+00:00:00
  4. Stage separationT+00:02:29
  5. LandingT+00:08:11
  1. SLC-4E
  2. OCISLY574 km downrange
  3. LiftoffT+00:00:00
  4. Max QT+00:01:07
  5. Stage separationT+00:02:29
  6. FairingT+00:02:58
  7. LandingT+00:08:11
Schematic, not to scale. Tap a moment for more.Point at a moment for more.
Planschematic

8 min from liftoffin your time zone (CET)

  1. T plus 0 secondsLiftoff
  2. T plus 1 minute 7 secondsMax Q
  3. T plus 2 minutes 26 secondsMECO
  4. T plus 2 minutes 29 secondsStage 2 Separation
  5. T plus 2 minutes 36 secondsSES-⁠1, 2nd stage
  6. T plus 2 minutes 58 secondsFairing Separation, 2nd stage
  7. T plus 6 minutes 6 secondsEntry Burn Startup, 1st stage
  8. T plus 6 minutes 30 secondsEntry Burn Shutdown, 1st stage
  9. T plus 7 minutes 52 secondsStage 1 Landing Burn
  10. T plus 8 minutes 11 secondsStage 1 Landing

Falcon 9 Block 5

SpaceXReusable644 launches since May 2018, 643 successful

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  • BoosterB1100most recently launched USSF-⁠385
About 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.

70m

Height

3.7m

Diameter

549t

Mass at liftoff

7.6MN

Thrust at liftoff

23t

Payload to low Earth orbit

8.3t

Payload to geostationary transfer orbit

Orbit estimated from CelesTrak’s elementsMeasured trackSpaceX’s predicted path

In orbit now

The crewed stations and Hubble, once around the Earth every 92 to 94 minutes

SpacecraftAltitudeSpeed
ISSDocked: Soyuz MS-⁠29, Crew-⁠13In sunlight433km27,552km/h
TiangongDocked: Shenzhou-⁠23In Earth’s shadow386km27,656km/h
HubbleIn sunlight474km27,472km/h

Estimated for from CelesTrak’s orbital elements, up to 20 h old.

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