Tidally Locked Planets: How Close to the Star?

AstroCody
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How close must a planet be to its parent star in order for it to be tidally locked?
 
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Tidal locking isn't just determined by position. It takes time for bodies to become locked and it is highly dependent upon the size of the bodies and initial rotations. So I don't think that there is a good general answer to this.
 
Thanks for the answer and the link, it was very helpful.
 
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