USSF-87
United Launch Alliance · Vulcan VC4S
Success
TBD
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Launch Details
Launch Date
—
Agency
United Launch AllianceRocket
Vulcan VC4S
Launch Pad
Space Launch Complex 41 — Cape Canaveral SFS, FL, USA
Launch Window
—
Probability
95%
Launch date history
No date changes since Orbit started tracking this launch on 27 Sep 2026.
Mission Progress
Current Stage
Orbit Insertion
Payload deployed to target orbit — primary mission success
9 of 9 stages complete
100%
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- Announced
Mission confirmed and added to the launch manifest
- Vehicle Integration
Rocket assembled and transported to the launch pad
- Pre-Launch Checks
Fuelling, systems checks, and final go/no-go polling
- Launch Window Open
Countdown active — T-0 within the launch window
- Liftoff
Main engines ignite and the vehicle clears the tower
- Max-Q
Maximum aerodynamic pressure on the vehicle
- MECO / Stage Separation
Main engine cutoff and first stage separates
- Second Stage Ignition
Upper stage engine ignites to continue to orbit
- Orbit Insertion
Payload deployed to target orbit — primary mission success
Launch Provider
United Launch Alliance
CommercialULAUnited Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
Founded2006
Total launches175
CountryUSA
Rocket & Vehicle
Vulcan VC4S
VulcanVC4S
Launch Pad
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
Lat 28.583
Lng -80.583
Launches from pad125
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