topocentric

adjective

to·​po·​cen·​tric ˌtä-pə-ˈsen-trik 

ˌtō-

: relating to, measured from, or as if observed from a particular point on the earth's surface : having or relating to such a point as origin

topocentric coordinates

compare geocentric

Word History

First Known Use

circa 1942, in the meaning defined above