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- Quick mean to apparent place
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<H2><A NAME="SECTION000441000000000000000"></A><A NAME="____palMapqk_"></A>
<BR>
palMapqk

   palMapqk
-   Quick mean to apparent place

</H2>
      <DL>
<DT><STRONG>Description:</STRONG></DT>
<DD><DL>
<DD>Quick mean to apparent place:  transform a star RA,Dec from
      mean place to geocentric apparent place, given the
      star-independent parameters.

<P>
Use of this routine is appropriate when efficiency is important
      and where many star positions, all referred to the same equator
      and equinox, are to be transformed for one epoch.  The
      star-independent parameters can be obtained by calling the
      palMappa routine.

<P>
If the parallax and proper motions are zero the palMapqkz
      routine can be used instead.

</DD>
</DL>
      
<BR>   
   
</DD>
<DT><STRONG>Invocation:</STRONG></DT>
<DD><DL>
<DD><TT>      void palMapqk ( double rm, double dm, double pr, double pd,
                      double px, double rv, double amprms[21],
                      double <SPAN CLASS="MATH"><IMG
 WIDTH="13" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
 SRC="img1.png"
 ALT="$*$"></SPAN>ra, double <SPAN CLASS="MATH"><IMG
 WIDTH="13" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
 SRC="img1.png"
 ALT="$*$"></SPAN>da );
   </TT>
      
</DD>
</DL>
      
<BR>

</DD>
<DT><STRONG>Arguments:</STRONG></DT>
<DD>
<BR>      <DL>
<DT><STRONG>
         rm = double (Given)
      </STRONG></DT>
<DD>
         Mean RA (radians)
      
      
</DD>
<DT><STRONG>
         dm = double (Given)
      </STRONG></DT>
<DD>
         Mean declination (radians)
      
      
</DD>
<DT><STRONG>
         pr = double (Given)
      </STRONG></DT>
<DD>
         RA proper motion, changes per Julian year (radians)
      
      
</DD>
<DT><STRONG>
         pd = double (Given)
      </STRONG></DT>
<DD>
         Dec proper motion, changes per Julian year (radians)
      
      
</DD>
<DT><STRONG>
         px = double (Given)
      </STRONG></DT>
<DD>
         Parallax (arcsec)
      
      
</DD>
<DT><STRONG>
         rv = double (Given)
      </STRONG></DT>
<DD>
         Radial velocity (km/s, <SPAN CLASS="MATH"><IMG
 WIDTH="18" HEIGHT="31" ALIGN="MIDDLE" BORDER="0"
 SRC="img2.png"
 ALT="$+$"></SPAN>ve if receding)
      
      
</DD>
<DT><STRONG>
         amprms = double [21] (Given)
      </STRONG></DT>
<DD>
         Star-independent mean-to-apparent parameters (see palMappa).
      
      
</DD>
<DT><STRONG>
         ra = double <SPAN CLASS="MATH"><IMG
 WIDTH="13" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
 SRC="img1.png"
 ALT="$*$"></SPAN> (Returned)
      </STRONG></DT>
<DD>
         Apparent RA (radians)
      
      
</DD>
<DT><STRONG>
         dec = double <SPAN CLASS="MATH"><IMG
 WIDTH="13" HEIGHT="18" ALIGN="BOTTOM" BORDER="0"
 SRC="img1.png"
 ALT="$*$"></SPAN> (Returned)
      </STRONG></DT>
<DD>
         Apparent dec (radians)
      

</DD>
</DL>
      
<BR>   
   
</DD>
<DT><STRONG>Notes:</STRONG></DT>
<DD><UL>
<LI>The reference frames and timescales used are post IAU 2006.

</LI>
</UL>
      
<BR>

</DD>
</DL>
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