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Pegasus XL | Swift Boost Mission
Pegasus XL | Swift Boost Mission launched on Fri, Jul 3, 2026, 08:36 AM UTC — a Northrop Grumman Space Systems mission.
Launch SuccessfulNorthrop Grumman Space Systems
Lifted offNET Jul 2026
NET Fri, Jul 3, 2026, 08:36 AM UTC
Mission profile
The flight at a glance
Pegasus XLVehicle
Northrop Grumman Space SystemsProvider
Kwajalein AtollPad
Air launch to orbitLocation
Mission ExtensionMission type
Low Earth OrbitOrbit
Flight sequence
Mission timeline
Key events from liftoff — ignition, staging, separation and deployment — with their times relative to T0.
- LiftoffT+ 00:00:00
- IgnitionT+ 00:00:05
- MECOT+ 00:01:19
- SEST+ 00:01:35
- Fairing SeparationT+ 00:02:17
- SECOT+ 00:02:50
- Stage 3 IgnitionT+ 00:06:35
- Stage 3 CutoffT+ 00:07:44
- Payload SeparationT+ 00:12:44
Flight simulation
Ascent to orbit
A representative gravity-turn climb for Pegasus XL to Low Earth Orbit. Illustrative model — not this mission’s live telemetry.
Mission timeT+0:00
Altitude0.0 km
Velocity0.00 km/s
PhaseLiftoff
T+0:00 / 8:00
SimulatedRepresentative Pegasus XL ascent profile — illustrative model, not this mission’s live telemetry.
The mission
Swift Boost Mission
Contracted by NASA under the Small Business Innovation Research Phase 3 contract, Katalyst Space Technologies' LINK servicing spacecraft will rendezvous and attach to NASA’s Neil Gehrels Swift Observatory to re-boost its orbit. This aims to demonstrate a key capability for the future of space exploration and extending the Swift mission’s science lifetime in gamma ray astronomy.
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 Pegasus XL | Swift Boost Mission launch?
Pegasus XL | Swift Boost Mission is scheduled to lift off Fri, Jul 3, 2026, 08:36 AM UTC.
Where can I watch Pegasus XL | Swift Boost Mission?
A live webcast will appear on this page as soon as the provider publishes a stream link.
Who is launching Pegasus XL | Swift Boost Mission?
Pegasus XL | Swift Boost Mission is an Northrop Grumman Space Systems mission flying on a Pegasus XL.
Where does Pegasus XL | Swift Boost Mission launch from?
It lifts off from Kwajalein Atoll, Air launch to orbit.