Military communications.

Typical orbit: 31557 km circular orbit, 16.7 deg inclination. Mass: 243 kg (535 lb).

• 1969 November 22 - Skynet 1A - Program: Skynet. Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 243 kg (535 lb). Perigee: 35,682 km (22,171 mi). Apogee: 35,894 km (22,303 mi). Inclination: 13.90 deg. Period: 1,436.20 min.
  Over Indian Ocean. Military communications. Previously registered by the United States in A/AC.105/INF.220: 1969-101A, orbital data 276 x 36716 km x 28.0 deg, category C. Positioned in geosynchronous orbit over the Indian Ocean at 41 deg E in 1969-1972?; ??? 1972-1977; over the Americas at 100-110 deg W in 1977-1998 As of 26 August 2001 located at 104.51 deg W drifting at 0.015 deg W per day. As of 2007 Mar 9 located at 106.94W drifting at 0.015W degrees per day.

• 1970 March 20 - NATO 1 - Program: NATO. Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 243 kg (535 lb). Perigee: 35,768 km (22,225 mi). Apogee: 35,801 km (22,245 mi). Inclination: 13.40 deg. Period: 1,436.00 min.
  Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Atlantic Ocean at 18 deg W in 1970-1972; over the Americas at 100-110 deg W in 1977-1998 As of 3 September 2001 located at 101.97 deg W drifting at 0.023 deg E per day. As of 2007 Mar 9 located at 100.55W drifting at 0.016W degrees per day.

• 1970 August 19 - Skynet 1B - Program: Skynet. Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 243 kg (535 lb). Perigee: 278 km (172 mi). Apogee: 37,460 km (23,270 mi). Inclination: 25.90 deg. Period: 665.40 min.
  AKM failure left in unusable orbit. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

• 1971 February 3 - NATO 2 - Program: NATO. Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 243 kg (535 lb). Perigee: 35,772 km (22,227 mi). Apogee: 35,802 km (22,246 mi). Inclination: 13.90 deg. Period: 1,436.10 min.
  Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Atlantic Ocean at 26 deg W in 1971-1975?; over the Americas at 105 deg W in 1976-1983; over the Americas at 110 deg W in 1983; over the Americas at 105 deg W in 1983-1998 As of 5 September 2001 located at 104.88 deg W drifting at 0.004 deg W per day. As of 2007 Mar 9 located at 105.24W drifting at 0.007W degrees per day.