The APSTAR 1 spacecraft carries such general communications traffic as voice, fax, data, and television signals across China and Hong Kong, Indonesia, Japan, Singapore, and Vietnam. APSTAR 1A has expanded coverage to India and Pakistan. Hughes Space and Communications International, Inc., signed a contract in May 1992 with APT Satellite Company, Ltd., of Hong Kong for the first satellite. APT ordered APSTAR IA in March 1995. The spacecraft were built at the Hughes Space and Communications Company facilities in El Segundo, Calif.
Geostationary OrbitSatellite Data System (SDS) spacecraft are communication relay satellites for transmiting real-time data from US reconnaissance satellites (e.g. KH-11) in polar areas. They are also used for communications to USAF air craft on polar routes and connect the various ground stations of the Air Force Satellite Control Network (AFSCN). The spacecraft relay the downlinked KH-11 data to a ground station at Fort Belvoir, Virginia.
Elliptical OrbitSTS-78 was the fifth dedicated Life and Microgravity Spacelab mission for the Space Shuttle program, flown partly in preparation for the International Space Station project. The mission used the Space Shuttle Columbia, which lifted off successfully from Kennedy Space Center’s launch pad 39-B on 20 June 1996.
Low Earth Orbit