diff --git a/PARAM_DEF/helios1_lat_hee.xml b/PARAM_DEF/helios1_lat_hee.xml
new file mode 100644
index 0000000..5e43f4b
--- /dev/null
+++ b/PARAM_DEF/helios1_lat_hee.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<param xml:id="helios1_lat_hee">
+  <get>
+        <vi name="helios1:orb:all">
+         <baseParam name="HEE"/>
+        </vi>
+  </get>
+  <process description="LAT HEE">atan($helios1_orb_all_HEE[2]/sqrt(pow($helios1_orb_all_HEE[1],2) + pow($helios1_orb_all_HEE[0],2)))*RAD2DEG</process>
+  <output/>
+</param>
diff --git a/PARAM_DEF/helios1_lon_hee.xml b/PARAM_DEF/helios1_lon_hee.xml
new file mode 100644
index 0000000..8741d54
--- /dev/null
+++ b/PARAM_DEF/helios1_lon_hee.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<param xml:id="helios1_lon_hee">
+  <get>
+        <vi name="helios1:orb:all">
+         <baseParam name="HEE"/>
+        </vi>
+  </get>
+  <process description="LON HEE">atan2($helios1_orb_all_HEE[1],$helios1_orb_all_HEE[0])*RAD2DEG</process>
+  <output/>
+</param>
--
libgit2 0.21.2