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Article | REF: TRP4052 V1

Space Trajectories. Collision Risks on Orbit

Author: Max CERF

Publication date: December 10, 2020, Review date: July 30, 2021

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4. Conclusion

The orbitography of known debris has become systematic in order to best guarantee the safety of operational satellites. NORAD (North American Aerospace Defense Command) maintains a catalog of several thousand orbiting objects in TLE (Two-Line Elements) format . Daily analysis of these orbits, carried out on the Celestrak website, enables conjunctions to be predicted and the risk measured in terms of maximum probability of collision. When a critical probability of the order of 10 –5 is...

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