Northrop Grumman Space SystemsPegasus XLKwajalein Atoll, Air launch to orbit
Pegasus XL | Swift Boost Mission
Countdown
No countdown — this launch time is not yet known to the minute.July 3, 2026 · 08:36 UTCAdd to calendar
Image: NASA/Laurie Losey
Northrop Grumman Space Systems's 17th launch · 2nd this year · humanity's 7,331st orbital launch attempt
The launch vehicle successfully inserted its payload(s) into the target orbit(s).
Window: Jul 3, 08:36 – Jul 3, 08:36 UTC
Flight preview
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.
Mission Extension · Low Earth Orbit (LEO)
Booster
No booster details available.
Watch
No webcast announced yet.
Flight timeline
- T−0Liftoff
- T+5SIgnition
- T+1M19SMECO
- T+1M35SSES
- T+2M17SFairing Separation
- T+2M50SSECO
- T+6M35SStage 3 Ignition
- T+7M44SStage 3 Cutoff
- T+12M44SPayload Separation
Updates
Launched and reached orbit.
hitura-nobad · 7/3/2026 · source
Rescheduled for July 3.
Cosmic_Penguin · 7/3/2026 · source
Scrub due to launch vehicle issue.
Cosmic_Penguin · 7/2/2026 · source
Delayed again due to weather
Nosu · 7/1/2026 · source
Scrubbed due to weather
SwGustav · 6/30/2026 · source
Adjusted T-0.
Cosmic_Penguin · 6/30/2026 · source
Refined T-0.
Cosmic_Penguin · 6/26/2026 · source
Delayed to NET June 30 per new marine navigation warnings.
Cosmic_Penguin · 6/26/2026 · source
GO for launch.
Cosmic_Penguin · 6/18/2026 · source
NET June 27 per NOTAMs, TBC.
Cosmic_Penguin · 6/16/2026 · source
News
No-Go for Katalyst’s Reboost of NASA’s Swift Observatory
Katalyst Space and NASA concluded today that reboosting the Swift Observatory with Katalyst’s LINK spacecraft will not be possible due to attitude control problems. They still plan to conduct some […]
Katalyst Space and NASA abandon plans for Swift reboost
Katalyst Space and NASA have called off plans to use the company’s Link spacecraft to raise the orbit of the agency’s Swift gamma-ray observatory, citing attitude-control problems with the spacecraft.
NASA Updates Next Steps for Commercial Swift Boost Mission
Due to an ongoing commercial spacecraft attitude control issue, NASA and Katalyst Space announced Wednesday the LINK spacecraft will not capture or boost an agency satellite to a higher altitude to extend its science mission as planned. However, LINK still will attempt to conduct rendezvous and proximity operations with NASA’s Neil Gehrels Swift Observatory to […]
Katalyst Space makes progress in restoring control of Swift servicing spacecraft
The company that developed a spacecraft to boost the orbit of a NASA observatory says it is making progress in recovering from its own spacecraft’s problems.
Swift Reboost Mission Encounters Setback
Katalyst Space’s efforts to reboost NASA’s Swift observatory has encountered a setback. The LINK on-orbit servicing spacecraft is in a multi-axis spin. LINK must attach itself to Swift and raise […]
Swift reboost mission encounters attitude control problems
A spacecraft launched nearly a month ago in a high-risk bid to boost the orbit of a NASA astrophysics satellite is suffering attitude control problems that could jeopardize its mission.
