# Vulcan VC4S | USSF-87: launch

> Vulcan VC4S by United Launch Alliance from Cape Canaveral SFS, FL, USA. Flown: Success.

- Canonical page: https://spacenexus.us/launch/cml5wstvk004cdx9fp30haoh0
- This Markdown version: https://spacenexus.us/launch/cml5wstvk004cdx9fp30haoh0.md
- Data as of: 2026-10-13 02:15 UTC (last Launch Library 2 sync)
- How the numbers are made: https://spacenexus.us/launch-slips/method

## Facts

- Launch: Vulcan VC4S | USSF-87
- Mission: USSF-87
- Provider: United Launch Alliance
- Rocket: Vulcan VC4S
- Pad: Cape Canaveral SFS, FL, USA
- Country of the launch site: USA
- Date (UTC): Thu, Feb 12, 09:22 UTC (2026-02-12T09:22:00.000Z)
- Launch window: 2026-02-12 08:30 UTC to 2026-02-12 10:30 UTC
- Status: completed (Launch Library 2: Success)
- Outcome: Success
- Real slips recorded: 0; other date moves (placeholder rolls, firmings), not slips: 0

## Mission description

Quoted from Launch Library 2: 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.

## Date history

No date change recorded for this launch since our ledger began.

## Sources

- [Launch Library 2 by The Space Devs](https://thespacedevs.com): launch names, providers, rockets, pads, dates and status
- [SpaceNexus Launch Ledger (our own record of every date change)](https://spacenexus.us/launch-slips/method)
- [Mission information (link from Launch Library 2)](https://ll.thespacedevs.com/2.2.0/launch/550f778d-6c2d-41fc-b182-6f0cd8feda93/)

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- Launch facts (names, providers, rockets, pads, dates, status): Launch Library 2 by The Space Devs (thespacedevs.com), credited and not relicensed by SpaceNexus.
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