Katalyst’s Link Spacecraft Begins Pursuit of NASA’s Swift Observatory in First Commercial Satellite Rescue
Featured image: [Artist’s rendering of the Katalyst Link spacecraft approaching NASA’s Swift Observatory in orbit; credit: Katalyst Space Technologies]
A shoebox-sized spacecraft built in under nine months is now racing against time to rescue NASA’s Swift gamma-ray burst observatory before its orbit decays beyond reach. Katalyst Space Technologies’ Link spacecraft launched July 3 aboard a Northrop Grumman Pegasus XL rocket from Kwajalein Atoll and has begun checkout procedures ahead of what would be the first commercial capture of an unprepared, still-operational government satellite.
NASA’s Swift Observatory, a roughly $500 million asset launched in November 2004, was designed for a two-year primary mission. It has far exceeded expectations, detecting approximately 100 gamma-ray bursts per year across multiple wavelengths. But Swift has no onboard propulsion, and its orbit has decayed from 585 kilometers to roughly 363 kilometers due to atmospheric drag intensified by Solar Cycle 25.
The critical threshold is 300 kilometers. Swift is expected to cross it around October 2026, at which point a safe capture becomes impossible.
A spacecraft built from scratch
NASA awarded Katalyst, a Flagstaff, Arizona-based startup, a roughly $30 million contract in September 2025 to design and build a rescue spacecraft in less than a year. The result is Link, a 500-kilogram satellite roughly the size of a large mini-fridge, equipped with three robotic arms, LiDAR sensors, and cameras for autonomous navigation and inspection.
“The unit has multiple superconducting magnets that are positioned in different axes,” said Katalyst CEO Ghonhee Lee in earlier statements describing the company’s technology. “A fast, high-risk, high-reward mission,” added John Van Eepoel, mission director at NASA Goddard.
The challenge is compounded by the fact that Swift has no docking interface, it was never designed for servicing. Katalyst engineers identified pre-launch transportation flanges, small metal rims used for ground handling in 2004, as the only viable capture points. But no images exist of Swift’s backside from before launch, meaning uncertainty will only be resolved when Link performs its flyby inspection.
“We’re relying on Swift’s ability to maintain its own pointing control,” said Kieran Wilson, principal investigator for Link at Katalyst Space Technologies. “Once we get to within tens of meters, Swift will be performing maneuvers in tandem with us for us to inspect the capture locations, ensuring they are free of torn-off multi-layer insulation.”
The pursuit
Over the next several weeks, Katalyst will perform checkout procedures on Link’s propulsion, sensor, and navigation systems. Three hall-effect xenon ion thrusters will provide the gradual, efficient propulsion needed for rendezvous and the eventual orbit raise.
The capture sequence calls for Link to approach Swift, conduct a flyby inspection at tens of meters’ range, use LiDAR to build a 3D model of the observatory, select the best capture flanges, and latch on using three robotic arms. Then, over several months, the ion thrusters will boost the combined stack back to roughly 600 kilometers, potentially extending Swift’s life into the 2030s.
“This is a historic mission,” said Robert Lamontagne, vice president of strategic partnerships at Katalyst. “A robotic spacecraft that can go and capture an unprepared satellite. It’s a commercial mission, first and foremost. We’re doing this as a service.”
A turning point for in-orbit servicing
If successful, the mission would validate that any low-Earth-orbit satellite without onboard propulsion can be rescued, not just those built with servicing interfaces. Katalyst’s approach represents a shift from the satellite industry’s traditional throwaway model toward what the company calls the “upgrade economy.”
“We think the spacecraft operator should no longer be constrained by the silly decisions made before launch,” Lamontagne said. “You should be able to refuel, reposition, repurpose, repair, and even upgrade satellites, even if they were never prepared for it.”
Previous in-orbit servicing missions, such as Northrop Grumman’s MEV-1 (2020), docked with cooperative GEO satellites that had standard interfaces. Katalyst’s Link is targeting a live, operational, uncrewed science satellite in LEO on a weeks-long timeline, a fundamentally different challenge.