If you go to the home page for the most recent space shuttle, STS-75/Columbia launched in February 1996, you will see the basic orbital elements for this shuttle. Its orbital period was 90.35 minutes so that there were 15.9 orbits of it around the Earth each day. It traveled in a nearly circular orbit of about 290 kilometers. For more information about the shuttle program, go to the NASA Homepage and click their icon labeled Human Space Flight which takes you to the homepage for the Office of Space Flight.