IRIDIUM WEBSITES

http://www.heavens-above.com/
   
     gives passes, alt, az, time, mag

http://celestrak.com/NORAD/elements/

     gives orbital elements

http://www.satobs.org/element.html

     description of element format

http://www.n2yo.com

     real time satellite tracking & gives more precise RA and dec.

Also:

The software "the sky" pro version 6 can control telescope pointing
and tracking of satellites.