Roy Smith wrote:
The Sirius Satellite Radio (www.sirius.com) says:

"our three state-of-the-art satellites that rotate in figure eight,
geo-synchronous orbits around the earth"
I know what a geo synchronous orbit is, but what's the "figure eight"
part all about?

Ground-track makes "figure eight", see:
http://celestrak.com/columns/v04n07/


Matti Anttila
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