This Medium-capacity Communications Satellite for Experimental Purposes was a spin stabilized geostationary communications satellite.

Characteristics of satellite: Weight approx 340 kg at an early stage in orbit, configuration: cylindrical, height 3.48 m, diameter 2.18m, Expected life more than three years. Launch vehicle Delta 2914.

Typical orbit: 36169 km x 36176 km at 11 degrees inclination. Mass: 676 kg (1,490 lb). Associated Launch Vehicle: Delta 2000.

• 1977 December 15 - Sakura - Program: CS. Launch Site: Cape Canaveral. Launch Vehicle: Delta. Mass: 676 kg (1,490 lb). Perigee: 36,169 km (22,474 mi). Apogee: 36,176 km (22,478 mi). Inclination: 10.50 deg. Period: 1,455.90 min.

  Medium-capacity Communications Satellite for Experimental Purposes . Launch vehicle Delta 2914-137. Launch time 0047 UT. Geographical longitude on geostationary orbit: 135 deg E. CS is a spin stabilized geostationary communications satellite. Characteris tics of satellite: Weight approx 340 kg at an early stage in orbit, configuration: cylindrical, height 3.48 m, diameter 2.18m, Expected life more than three years. Positioned in geosynchronous orbit over the Pacific Ocean at 135 deg E in 1977-1983 over the Pacific Ocean 150 deg E in 1984-1985 As of 25 August 2001 located at 78.79 deg E drifting at 4.904 deg W per day. As of 2007 Mar 10 located at 94.72W drifting at 4.901W degrees per day.