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+<sect2 id="calc-planetcoords">
+<title>Planet Coordinates module</title>
+<indexterm><primary>Tools</primary>
+<secondary>Astrocalculator</secondary>
+<tertiary>Planet Coordinates module</tertiary>
+</indexterm>
+
+<screenshot>
+<screeninfo>
+The Planet Coordinates calculator module
+</screeninfo>
+<mediaobject>
+  <imageobject>
+    <imagedata fileref="calc-planetcoords.png" format="PNG"/>
+  </imageobject>
+  <textobject>
+    <phrase>Planet Coordinates</phrase>
+  </textobject>
+</mediaobject>
+</screenshot>
+
+<para>
+The Planet Coordinates module computes positional data for 
+any major solar system body, for any time and date and any 
+geographic location.  Simply select the <guilabel>solar 
+system body</guilabel> from the drop-down list, and specify 
+the desired date, time, and geographic coordinates (these 
+values are preset to the current &kstars; settings).  Then 
+press the <guibutton>Compute</guibutton> button to determine 
+the <link linkend="equatorial">Equatorial</link>, <link 
+linkend="horizontal">Horizontal</link>, and <link 
+linkend="ecliptic">Ecliptic</link> coordinates of the body.
+</para>
+<para>
+There is a batch mode for this module.  You must construct 
+an input file in which each line specifies values for the 
+input parameters (solar system body, date, time, longitude, 
+and latitude).  You may choose to specify a constant value
+for some of the parameters in the calculator window (these 
+parameters should be skipped in the input file).  You may 
+also specify which of the output parameters (Equatorial, 
+Horizontal, and Ecliptic coordinates) should be calculated.
+Finally, specify the input and output filenames, and press 
+the <guibutton>Run</guibutton> button to generate the output 
+file with the computed values.
+</para>
+</sect2>