<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>
