diff --git a/PARAM_DEF/hs_ephem_mag.xml b/PARAM_DEF/hs_ephem_mag.xml
new file mode 100644
index 0000000..8287563
--- /dev/null
+++ b/PARAM_DEF/hs_ephem_mag.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<param xml:id="hs_ephem_mag_##node##">
+    <info>
+        <name>##node##_r</name>
+        <short_name>distance ##node##-earth</short_name>
+        <components/>
+        <units>Re</units>
+        <coordinates_system/>
+        <tensor_order/>
+        <si_conversion/>
+        <table/>
+        <fill_value/>
+        <ucd>pos.distance</ucd>
+        <dataset_id>hs-ephem-##node##</dataset_id>
+        <instrument_id>HelioSwarm_ephemeris</instrument_id>
+    </info>
+    <get>
+        <vi name="helioswarm:ephem:test">
+            <baseParam name="magnitude_##node##"/>
+        </vi>
+    </get>
+    <process>$helioswarm_ephem_test_magnitude_##node##/RADIUS_EARTH</process>
+    <output/>
+</param>
diff --git a/PARAM_DEF/hs_ephem_ta.xml b/PARAM_DEF/hs_ephem_ta.xml
new file mode 100644
index 0000000..61768b1
--- /dev/null
+++ b/PARAM_DEF/hs_ephem_ta.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<param xml:id="hs_ephem_ta_##node##">
+    <info>
+        <name>@@node@@ true_anomaly</name>
+        <short_name>##node## true anomaly</short_name>
+        <components/>
+        <units>deg</units>
+        <coordinates_system/>
+        <tensor_order/>
+        <si_conversion/>
+        <table/>
+        <fill_value/>
+        <ucd/>
+        <dataset_id>hs-ephem-##node##</dataset_id>
+        <instrument_id>HelioSwarm_ephemeris</instrument_id>
+    </info>
+    <get>
+        <vi name="helioswarm:ephem:test">
+            <baseParam name="true_anomaly_##node##"/>
+        </vi>
+    </get>
+    <process/>
+    <output/>
+</param>
diff --git a/PARAM_DEF/hs_ephem_tmfr.xml b/PARAM_DEF/hs_ephem_tmfr.xml
new file mode 100644
index 0000000..0c98e23
--- /dev/null
+++ b/PARAM_DEF/hs_ephem_tmfr.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<param xml:id="hs_ephem_tmfr_##node##">
+    <info>
+        <name>@@node@@ total_mass_flow_rate</name>
+        <short_name>##node## total mass flow rate</short_name>
+        <components/>
+        <units>g/hr</units>
+        <coordinates_system/>
+        <tensor_order/>
+        <si_conversion/>
+        <table/>
+        <fill_value/>
+        <ucd/>
+        <dataset_id>hs-ephem-##node##</dataset_id>
+        <instrument_id>HelioSwarm_ephemeris</instrument_id>
+    </info>
+    <get>
+        <vi name="helioswarm:ephem:test">
+            <baseParam name="total_mass_flow_rate_##node##"/>
+        </vi>
+    </get>
+    <process/>
+    <output/>
+</param>
diff --git a/PARAM_DEF/hs_ephem_xyz_gse.xml b/PARAM_DEF/hs_ephem_xyz_gse.xml
new file mode 100644
index 0000000..e99996a
--- /dev/null
+++ b/PARAM_DEF/hs_ephem_xyz_gse.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<param xml:id="hs_ephem_xyz_gse_##node##">
+    <info>
+        <name>@@node@@ xyz_gse</name>
+        <short_name>##node##_xyz_gse</short_name>
+        <components>x,y,z</components>
+        <units>Re</units>
+        <coordinates_system>GSE</coordinates_system>
+        <tensor_order/>
+        <si_conversion/>
+        <table/>
+        <fill_value/>
+        <ucd>pos.earth;instr.obsty</ucd>
+        <dataset_id>hs-ephem-##node##</dataset_id>
+        <instrument_id>HelioSwarm_ephemeris</instrument_id>
+    </info>
+    <get>
+        <vi name="helioswarm:ephem:test">
+            <baseParam name="xyz_gse_##node##"/>
+        </vi>
+    </get>
+    <process>$helioswarm_ephem_test_xyz_gse_##node##/RADIUS_EARTH</process>
+    <output/>
+</param>
diff --git a/PARAM_INFO_PREDEFINED/info_hs_ephem_mag.xml b/PARAM_INFO_PREDEFINED/info_hs_ephem_mag.xml
new file mode 100644
index 0000000..fab0a13
--- /dev/null
+++ b/PARAM_INFO_PREDEFINED/info_hs_ephem_mag.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<paraminfo id="helioswarm_ephem_magnitude"><dimensions dim_1="1" dim_2="1"/><tables/></paraminfo>
diff --git a/PARAM_INFO_PREDEFINED/info_hs_ephem_ta.xml b/PARAM_INFO_PREDEFINED/info_hs_ephem_ta.xml
new file mode 100644
index 0000000..220a00f
--- /dev/null
+++ b/PARAM_INFO_PREDEFINED/info_hs_ephem_ta.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<paraminfo id="helioswarm_ephem_true_anomaly"><dimensions dim_1="1" dim_2="1"/><tables/></paraminfo>
diff --git a/PARAM_INFO_PREDEFINED/info_hs_ephem_tmfr.xml b/PARAM_INFO_PREDEFINED/info_hs_ephem_tmfr.xml
new file mode 100644
index 0000000..c283d1e
--- /dev/null
+++ b/PARAM_INFO_PREDEFINED/info_hs_ephem_tmfr.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<paraminfo id="helioswarm_ephem_total_mass_flow_rate"><dimensions dim_1="1" dim_2="1"/><tables/></paraminfo>
diff --git a/PARAM_INFO_PREDEFINED/info_hs_ephem_xyz_gse.xml b/PARAM_INFO_PREDEFINED/info_hs_ephem_xyz_gse.xml
new file mode 100644
index 0000000..e118d4b
--- /dev/null
+++ b/PARAM_INFO_PREDEFINED/info_hs_ephem_xyz_gse.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<paraminfo id="helioswarm_ephem_xyz_gse"><dimensions dim_1="3" dim_2="1"/>
+    <components>
+        <component index_1="0" name="x"/>
+        <component index_1="1" name="y"/>
+        <component index_1="2" name="z"/>
+    </components>
+    <tables/>
+</paraminfo>
diff --git a/ParamTemplateList.xml b/ParamTemplateList.xml
index b698a7f..44d396b 100644
--- a/ParamTemplateList.xml
+++ b/ParamTemplateList.xml
@@ -1740,4 +1740,108 @@
                      <argument key="max" name="Ener. Max" type="generated-list" minkey="0" maxkey="95" subtype="int" nametpl="Ener. ##key##" default="95"/>
                 </arguments>
     </paramTemplate>
+	<paramTemplate paramId="hs_ephem_xyz_gse" fileName="hs_ephem_xyz_gse_##node##">
+		<arguments>
+            <argument key="node" name="Node" type="list" default="n0">
+                <item key="n0" name="Hub"/>
+                <item key="n1" name="Node 1"/>
+                <item key="n2" name="Node 2"/>
+                <item key="n3" name="Node 3"/>
+                <item key="n4" name="Node 4"/>
+                <item key="n5" name="Node 5"/>
+                <item key="n6" name="Node 6"/>
+                <item key="n7" name="Node 7"/>
+                <item key="n8" name="Node 8"/>
+			</argument>
+        </arguments>
+		<predefined>
+				<param>hs_ephem_xyz_gse_n0</param>
+				<param>hs_ephem_xyz_gse_n1</param>
+				<param>hs_ephem_xyz_gse_n2</param>
+				<param>hs_ephem_xyz_gse_n3</param>
+				<param>hs_ephem_xyz_gse_n4</param>
+				<param>hs_ephem_xyz_gse_n5</param>
+				<param>hs_ephem_xyz_gse_n6</param>
+				<param>hs_ephem_xyz_gse_n7</param>
+				<param>hs_ephem_xyz_gse_n8</param>
+		</predefined>
+	</paramTemplate>
+	<paramTemplate paramId="hs_ephem_mag" fileName="hs_ephem_mag_##node##">
+			<arguments>
+            <argument key="node" name="Node" type="list" default="n0">
+                <item key="n0" name="Hub"/>
+                <item key="n1" name="Node 1"/>
+                <item key="n2" name="Node 2"/>
+                <item key="n3" name="Node 3"/>
+                <item key="n4" name="Node 4"/>
+                <item key="n5" name="Node 5"/>
+                <item key="n6" name="Node 6"/>
+                <item key="n7" name="Node 7"/>
+                <item key="n8" name="Node 8"/>
+			</argument>
+        </arguments>
+		<predefined>
+				<param>hs_ephem_mag_n0</param>
+				<param>hs_ephem_mag_n1</param>
+				<param>hs_ephem_mag_n2</param>
+				<param>hs_ephem_mag_n3</param>
+				<param>hs_ephem_mag_n4</param>
+				<param>hs_ephem_mag_n5</param>
+				<param>hs_ephem_mag_n6</param>
+				<param>hs_ephem_mag_n7</param>
+				<param>hs_ephem_mag_n8</param>
+		</predefined>
+	</paramTemplate>
+	<paramTemplate paramId="hs_ephem_ta" fileName="hs_ephem_ta_##node##">
+			<arguments>
+            <argument key="node" name="Node" type="list" default="n0">
+                <item key="n0" name="Hub"/>
+                <item key="n1" name="Node 1"/>
+                <item key="n2" name="Node 2"/>
+                <item key="n3" name="Node 3"/>
+                <item key="n4" name="Node 4"/>
+                <item key="n5" name="Node 5"/>
+                <item key="n6" name="Node 6"/>
+                <item key="n7" name="Node 7"/>
+                <item key="n8" name="Node 8"/>
+			</argument>
+        </arguments>
+		<predefined>
+				<param>hs_ephem_ta_n0</param>
+				<param>hs_ephem_ta_n1</param>
+				<param>hs_ephem_ta_n2</param>
+				<param>hs_ephem_ta_n3</param>
+				<param>hs_ephem_ta_n4</param>
+				<param>hs_ephem_ta_n5</param>
+				<param>hs_ephem_ta_n6</param>
+				<param>hs_ephem_ta_n7</param>
+				<param>hs_ephem_ta_n8</param>
+		</predefined>
+	</paramTemplate>
+	<paramTemplate paramId="hs_ephem_tmfr" fileName="hs_ephem_tmfr_##node##">
+			<arguments>
+            <argument key="node" name="Node" type="list" default="n0">
+                <item key="n0" name="Hub"/>
+                <item key="n1" name="Node 1"/>
+                <item key="n2" name="Node 2"/>
+                <item key="n3" name="Node 3"/>
+                <item key="n4" name="Node 4"/>
+                <item key="n5" name="Node 5"/>
+                <item key="n6" name="Node 6"/>
+                <item key="n7" name="Node 7"/>
+                <item key="n8" name="Node 8"/>
+			</argument>
+        </arguments>
+		<predefined>
+				<param>hs_ephem_tmfr_n0</param>
+				<param>hs_ephem_tmfr_n1</param>
+				<param>hs_ephem_tmfr_n2</param>
+				<param>hs_ephem_tmfr_n3</param>
+				<param>hs_ephem_tmfr_n4</param>
+				<param>hs_ephem_tmfr_n5</param>
+				<param>hs_ephem_tmfr_n6</param>
+				<param>hs_ephem_tmfr_n7</param>
+				<param>hs_ephem_tmfr_n8</param>
+		</predefined>
+	</paramTemplate>
 </paramTemplateList>
--
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