Planetary path (5)
I believe the answer is:
orbit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">planetary 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 orbit that I've seen before include "Planet's course" , "Revolution" , "Field of influence" , "Sun's circulation" , "Path of a planet or satellite" .)