NASCAR on Tuesday unveiled its 2015 schedules and the 36-race calendar for its premier Sprint Cup Series includes a three-race Western swing in March.
Geosynchronous - An orbit around Earth whose orbital period is equal to a sidereal day (23 hours, 56 minutes), irrespective of its inclination. - A person on a point on Earth, will see a satellite in this orbit in the same place in the sky at the same time of the day, everyday.
The elliptical orbit is often called the Highly Elliptical Orbit, HEO. As a result of this many satellites are placed in elliptical orbits, especially where certain attributes are required. For example it does not require the orbits to be equatorial like the geostationary orbit. This means that polar and high latitude areas can be covered with highly elliptical orbits, HEO. The satellite elliptical orbit gives a number of coverage options that are not available when circular orbits are used.