The Danylkiw Limit is the minimum distance a warp-powered vessel must be from a gravity well in order to avoid the creation of a wormhole. The specific distance is based on the size of the gravity well, along with other factors. (TOS novel: Prime Directive)

This limit was likely named after John Danylkiw, the producer of an Afterschool Special written by Judith and Garfield Reeves-Stevens.
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