[Launch Alert] Monday Launch

Launch Alert launch-alert at mailman.qth.net
Sun Oct 4 15:20:21 EDT 2026


The following is an advisory from Vandenberg SFB:

"Vandenberg Guardians and Airmen are scheduled to support the upcoming SpaceX Falcon 9 launch of the Space Development Agency's fourth Tranche 1 data transport Monday, Oct. 5 aboard a SpaceX Falcon 9 rocket from Space Launch Complex 4 East.

Liftoff is targeted for 1:17 a.m. PT, with a landing scheduled back to base approximately 8-10 minutes after launch.

A live webcast of this mission will begin about 10 minutes prior to liftoff, which you can watch here [https://www.spacex.com/launches/sda-t1tl-a?utm_medium=email&utm_source=govdelivery] and on X @SpaceX.

The space vehicles launched during this mission will provide data transport as part of the SDA’s Proliferated Warfighter Space Architecture, a mesh network of optically connected satellites in low-Earth orbit that enable global military tactical communications and missile warning, indication, and tracking capabilities. Falcon 9 will deliver 21 data transport satellites comprising the fourth orbital plane in the SDA’s proliferated LEO architecture.

There is the possibility that residents of Santa Barbara, San Luis Obispo, and Ventura counties may hear one or more sonic booms during the launch, but what residents experience will depend on weather and other conditions.

Backup opportunity available on Tuesday, October 6 at 1:08 a.m. PT, if needed. This is the fourth of nine Tranche 1 missions Falcon 9 will launch on behalf of the SDA."

Weather permitting, the launch could be visible to the unaided eye for hundreds of miles.

For a better view of the launch, use tripod-mounted binoculars or a spotting scope. An astronomical telescope with a low-power eyepiece will probably provide the best view.

For countdown status and video feeds of the launch, go to:

https://spaceflightnow.com

https://www.spacex.com/launches/sda-t1tl-a

X @SpaceX

This information is subject to change.


More information about the Launch-Alert mailing list