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March 10, 2026

America June 3, 2022

Space Geeks: THOR algorithm tracks asteroids through space

America ı By Jackie Allen

215 0 Comments

Asteroids have been smashing into Earth since the days of the dinosaurs.  And it is possible that a massive space rock could threaten life as we know it. That’s why the development of THOR systems is so valuable. It is being recognized as “next-generation asteroid and comet discovery algorithms” which reveals what’s out there and what is heading in our direction. In May 2021, DIRAC (Institute for Data-Intensive Research in Astrophysics & Cosmology) published a pre-print detailing the THOR or “Tracklet-less Heliocentric Orbit Recovery” algorithm.       And on Tuesday, former astronaut and executive director of The Asteroid Institute, Ed Lu, and Danica Remy, B612 President released information about THOR’s first successful demonstration.   “From this Moeyens submitted a small, initial subset of discoveries to the Minor Planet Center for official recognition and validation. Now that the computational discovery technique has been validated, thousands of discoveries from NSC and other datasets are expected to follow. “ 

THOR views Space with an algorithm

THOR stands for Tracklet-less Heliocentric Orbit Recovery. And it is being used to discover asteroids that have been overlooked and to track their trajectory in space. Lu leads the team that developed THOR. And they harness massive computing power to compare points of light in various images of the night sky. Then match the visual puzzle pieces together to track an asteroid’s path through the solar system.  And with the initial demonstration performed by Moeyens complete, 104 new asteroids have been spotted. There is so much information that it gets confusing. NASA, the European Space Agency, and others have individual ongoing asteroid searches. All of them have to parse through telescope images with thousands or even 100,000 asteroids in them.  Some of the telescopes searching the heavens can’t take multiple images of the same region on the same night. So, it can be difficult to distinguish if the same asteroid is appearing in multiple photos taken at different times. But THOR easily makes the connection. “What’s magical about THOR is, it realizes that out of all those asteroids, this one in a certain image, and this one in another image four nights later, and this one seven nights later are all the same object and can be put together as the trajectory of a real asteroid,” Lu says. “This makes it possible to track the object’s path as it moves and to determine if it’s on a trajectory bound for Earth. Such a formidable task wouldn’t have been possible with older, slower computers, he adds. “

Privately Funded Space App

THOR is a privately funded app. Its developers anticipate customers including public and private space agencies like SpaceX, NASA, and the ESA. The doors are also open for scientists, researchers, educators, and mission planners.
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Jackie Allen
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Jackie Allen

Jackie is a freelance journalist and technology geek. She worked as a telecom project director for AT&T and BellSouth. Before joining the USA Herald she has written books, articles, blogs and whitepapers. Her clients include Samsung and other technology companies.

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