>I know that OIG stands for Orbital Information Group, but where is their >website? > Read the SeeSat-L / VSO Home Page: -- b_gimle@algonet.se (home) http://www.algonet.se/~b_gimle -- -- SeeSat-L / Visual Satellite Observer Home Page found at -- -- http://www.satellite.eu.org/satintro.html -- Follow the link 'Orbital elements' = http://www.satellite.eu.org/getkeps.html , read after HTTP: Orbital Information Group (OIG) and there you are !!