Scheduled for (UTC) 2026-09-17, 01:07:56
Scheduled for (local) 2026-09-16, 18:07:56 (PDT)
Launch site SLC-4E, Vandenberg SFB, California, USA
Booster B1097-13
Landing OCISLY
Payload USSF-259
Mass unknown
Customer USSF
Target Orbit Polar

Webcasts

Stream Link
Space Affairs https://www.youtube.com/watch?v=X0Rc1uf_6nw
Spaceflight Now https://www.youtube.com/watch?v=zKKHrz80iEQ
NASASpaceflight None
The Launch Pad https://www.youtube.com/watch?v=Ga-wrHrmrxA
International Rocket Launches https://www.youtube.com/watch?v=UsQxiQGGo2E
SpaceX https://x.com/SpaceX/status/2100388085481578744
The Space Devs https://www.youtube.com/watch?v=7SMBsQ5MQCk

Stats

Sourced from NextSpaceflight and r/SpaceX:

☑️ 59th launch from SLC-4E this year

☑️ 6 days, 9:25:26 turnaround for this pad

☑️ 28 days, 21:06:49 turnaround for B1097

☑️ 226th landing on OCISLY

☑️ 668th Falcon Family Booster landing, 679th Falcon recovery attempt

☑️ 106th Falcon 9 mission this year, 689th overall

☑️ 110th SpaceX mission this year, 720th overall (excluding Starship test flights)

☑️ 110th SpaceX launch this year, 729th overall (including Starship test flights)

☑️ 214th consecutive successful SpaceX launch (if successful)

Mission info

USSF-259 (TH-1)

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.