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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3. Risk of collision

A conjunction presents a level of risk that depends on the size of the objects, the distance at which they pass and positional uncertainties. The risk is quantified by a collision probability. This section presents the methods used to obtain a reliable assessment for short conjunctions in a straightforward way. The special case of long conjunctions is dealt with by a specific approach in paragraph 3.5 .

3.1 Short conjunction

When the objects are in different orbits, the duration of...

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Risk of collision