ns sessions.
 
            Use &quot;XLT+S&quot; or &quot;XCN+S&quot;: apply both light time and stellar
            aberration corrections for transmission.
 
  
      3) Compute the apparent position of a target body relative 
         to a star or other distant object.
 
            Use one of &quot;LT&quot;, &quot;CN&quot;, &quot;LT+S&quot;, or &quot;CN+S&quot; as needed to match
            the correction applied to the position of the distant
            object. For example, if a star position is obta