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Vulcan VC4S | USSF-87
Vulcan VC4S | USSF-87 launched on Thu, Feb 12, 2026, 09:22 AM UTC — a United Launch Alliance mission.
Launch SuccessfulUnited Launch Alliance
Lifted offNET Feb 2026
NET Thu, Feb 12, 2026, 09:22 AM UTC
Live coverage
Watch the webcasts
3 streams available — switch between the provider’s feed, X and others.
Mission profile
The flight at a glance
Vulcan VC4SVehicle
United Launch AllianceProvider
Space Launch Complex 41Pad
Cape Canaveral SFS, FL, USALocation
Government/Top SecretMission type
Geostationary OrbitOrbit
Flight sequence
Mission timeline
Key events from liftoff — ignition, staging, separation and deployment — with their times relative to T0.
- IgnitionT- 00:00:05
- LiftoffT+ 00:00:01
- SupersonicT+ 00:00:47
- Max-QT+ 00:01:03
- SRB SeparationT+ 00:01:37
- MECOT+ 00:04:58
- Stage 2 SeparationT+ 00:05:04
- SES-1T+ 00:05:14
- Fairing SeparationT+ 00:05:22
Flight simulation
Ascent to orbit
A representative gravity-turn climb for Vulcan VC4S to Geostationary Orbit. Illustrative model — not this mission’s live telemetry.
Mission timeT+0:00
Altitude0.0 km
Velocity0.00 km/s
PhaseLiftoff
T+0:00 / 18:00
SimulatedRepresentative Vulcan VC4S ascent profile — illustrative model, not this mission’s live telemetry.
The mission
USSF-87
USSF-87 will launch two identical Geosynchronous Space Situational Awareness Program (GSSAP) satellites GSSAP-7 and GSSAP-8 directly to a near-geosynchronous orbit approximately 36,000 km above the equator. Data from the GSSAP will uniquely contribute to timely and accurate orbital predictions, further enabling space flight safety including satellite collision avoidance.
Around this launch
Related news
No news linked to this launch yet
As coverage publishes, deduplicated articles about this mission will appear here.
Good to know
Frequently asked
What time does Vulcan VC4S | USSF-87 launch?
Vulcan VC4S | USSF-87 is scheduled to lift off Thu, Feb 12, 2026, 09:22 AM UTC.
Where can I watch Vulcan VC4S | USSF-87?
Watch the official live webcast embedded on this page — it goes live shortly before liftoff.
Who is launching Vulcan VC4S | USSF-87?
Vulcan VC4S | USSF-87 is an United Launch Alliance mission flying on a Vulcan VC4S.
Where does Vulcan VC4S | USSF-87 launch from?
It lifts off from Space Launch Complex 41, Cape Canaveral SFS, FL, USA.