> ( newvec,  &amp;r,     &amp;ra,    &amp;dec ); 
 
 </PRE>
<h4><a name="Restrictions">Restrictions</a></h4>
<PRE>
 
   None. 
 </PRE>
<h4><a name="Literature_References">Literature_References</a></h4>
<PRE>
 
   &quot;Celestial Mechanics, A Computational Guide for the Practitioner&quot; 
   by Laurence G. Taff 
 </PRE>
<h4><a name="Author_and_Institution">Author_and_Institution</a></h4>
<PRE>
 
   N.J. Bachman    (JPL)
   H.A. Neilan     (JPL) 
   E.D. Wright     (JPL)
 </PRE>
<h4><a name="Version">Version