Military communications.

Typical orbit: 36234 km x 36385 km at 2.2 to 10.7 degrees inclin. Mass: 720 kg (1,580 lb).

• 1976 April 22 - NATO 3A - Program: NATO. Launch Site: Cape Canaveral. Launch Complex: LC17B. Launch Vehicle: Delta. Mass: 310 kg (680 lb). Perigee: 35,801 km (22,245 mi). Apogee: 36,017 km (22,379 mi). Inclination: 13.30 deg. Period: 1,442.40 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 1976-1982; over the Atlantic Ocean 30 deg W in 1982-1984; over the Atlantic Ocean 50 deg W in 1984-1985; over the Atlantic Ocean at 30 deg W in 1985-1989; over the Americas at 125 deg W in 1989-1991 As of 5 September 2001 located at 4.12 deg E drifting at 1.524 deg W per day. As of 2007 Mar 9 located at 142.00E drifting at 1.522W degrees per day.

• 1977 January 28 - NATO 3B - Program: NATO. Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 701 kg (1,545 lb). Perigee: 37,079 km (23,039 mi). Apogee: 37,421 km (23,252 mi). Inclination: 10.50 deg. Period: 1,511.50 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 Pacific Ocean at 135 deg W in 1977-1979 over the Atlantic Ocean 20 deg W in 1979-1982 over the Atlantic Ocean 18 deg W in 1983-1986 over the Atlantic Ocean60 deg W in 1987-1993 As of 5 September 2001 located at 74.61 deg W drifting at 18.018 deg W per day. As of 2007 Mar 10 located at 40.43E drifting at 18.015W degrees per day.

• 1978 November 19 - NATO 3C - Program: NATO. Launch Site: Cape Canaveral. Launch Complex: LC17B. Launch Vehicle: Delta. Mass: 720 kg (1,580 lb). Perigee: 36,289 km (22,548 mi). Apogee: 36,299 km (22,555 mi). Inclination: 11.80 deg. Period: 1,462.10 min.
  Positioned in geosynchronous orbit over the Atlantic Ocean at 50 deg W in 1979-1982 over the Atlantic Ocean 21 deg W in 1983-1986 over the Atlantic Ocean 18 deg W in 1987-1991 over the Atlantic Ocean21 deg W in 1991-1992 As of 31 August 2001 located at 122.29 deg E drifting at 6.431 deg W per day. As of 2007 Mar 10 located at 114.22E drifting at 6.438W degrees per day.

• 1984 November 14 - NATO 3D - Program: NATO. Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 320 kg (700 lb). Perigee: 35,779 km (22,231 mi). Apogee: 35,796 km (22,242 mi). Inclination: 2.20 deg. Period: 1,436.20 min.
  Stationed at 138 deg W. Positioned in geosynchronous orbit at 30 deg W in 1985; 50 deg W in 1985-1986; 21 deg W in 1986-1991; 30 deg W in 1991-1993; 21 deg W in1993-1997; 18 deg W in 1997-1999 As of 31 August 2001 located at 19.33 deg W drifting at 0.021 deg W per day. As of 2007 Mar 10 located at 120.20W drifting at 19.149W degrees per day.