<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 from the <guilabel>Solar
system body:</guilabel> drop-down list, and specify
the desired date, time, and geographic coordinates (these
values are preset to the current &kstars; settings).  Then
the <link linkend="equatorial">Equatorial</link>, <link
linkend="horizontal">Horizontal</link>, and <link
linkend="ecliptic">Ecliptic</link> coordinates of the body are computed and displayed.
</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, Heliocentric ecliptic and Geocentric 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>
