Satellite Radio - Sirius does not as yet use geostationary satellites, though plans to expand their network in 2008 will add one. Currently, its three LS-1300 satellites fly in geosynchronous highly elliptical orbit in a 24-hour orbital period. Sirius claims the elliptical path of its satellite constellation ensures that each satellite spends about 16 hours a day over the continental United States, with at least one satellite over the country at all times.