<?xml version="1.0"?>
<param xml:id="earth_lon_hee">
  <get>
        <vi name="earth:orb:all">
         <baseParam name="HEE"/>
        </vi>
  </get>

  <process description="LON HAE">atan2($earth_orb_all_HEE[1],$earth_orb_all_HEE[0])*RAD2DEG</process>

  <output/>
</param>