<?xml version="1.0"?>
<param xml:id="mars_lon_hee">
  <get>
        <vi name="mars:orb:all">
         <baseParam name="HEE"/>
        </vi>
  </get>
  <process description="LON HEE">atan2($mars_orb_all_HEE[1],$mars_orb_all_HEE[0])*RAD2DEG</process>
  <output/>
</param>