Like a planet's path (7)
I believe the answer is:
orbital
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">like a planet's path</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for orbital that I've seen before include "Of road, circling a town" , "Relating to a planet's or a moon's track" , "circling a large city" , "Boil tar (anag)" , "Describing the M25 motorway?" .)