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Atlas F/SVS

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Status: Retired 1980. First Launch: 1977-06-23. Last Launch: 1980-04-26. Number: 7 . Thrust: 1,731.00 kN (389,144 lbf). Gross mass: 125,000 kg (275,000 lb). Height: 29.20 m (95.80 ft). Diameter: 3.05 m (10.00 ft). Apogee: 20,000 km (12,000 mi).

• NTS 2 - . Mass: 431 kg (950 lb). Nation: USA. Agency: USAF, USN. Program: Navstar. Class: Technology. Type: Navigation technology satellite. Spacecraft: NTS. USAF Sat Cat: 10091 . COSPAR: 1977-053A. Apogee: 20,256 km (12,586 mi). Perigee: 20,115 km (12,498 mi). Inclination: 63.90 deg. Period: 718.10 min.

  An Atlas booster and a Global Positioning System Stage Vehicle launched Navigation Technology Satellite 2 into orbit from Vandenberg AFB, California. This was the first use of the GPS Stage Vehicle. Navigation Technical Satellite; GPS precursor. Operated 50% satisfactorily -- still operating 25 years later.

• Navstar 1 - . Payload: GPS SVN 1 / OPS 5111. Mass: 759 kg (1,673 lb). Nation: USA. Agency: USAF. Manufacturer: Seal Beach. Program: Navstar. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Navstar. Spacecraft: GPS Block 1. USAF Sat Cat: 10684 . COSPAR: 1978-020A. Apogee: 20,560 km (12,770 mi). Perigee: 20,249 km (12,582 mi). Inclination: 64.50 deg. Period: 727.00 min.

  An Atlas booster was launched from Vandenberg AFB carrying the first NAVSTAR Satellite. The launch was successful, and the satellite functioned normally once in orbit. It was declared operational on 31 March. Also known as Navigational Development Satellite 1. Technology prototype of Navstar satellite.

• Navstar 2 - . Payload: GPS SVN 2 / OPS 5112. Mass: 759 kg (1,673 lb). Nation: USA. Agency: USAF. Manufacturer: Seal Beach. Program: Navstar. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Navstar. Spacecraft: GPS Block 1. USAF Sat Cat: 10893 . COSPAR: 1978-047A. Apogee: 20,653 km (12,833 mi). Perigee: 19,523 km (12,131 mi). Inclination: 63.60 deg. Period: 714.20 min.

  An Atlas booster was launched from Vandenberg AFB with the second NAVSTAR satellite. Launch was successful and the satellite functioned normally once in orbit. It began operating at its final station on 27 June. Also known as Navigational Development Satellite 2. Technology prototype of Navstar satellite.

• Navstar 3 - . Payload: GPS SVN 3 / OPS 5113. Mass: 759 kg (1,673 lb). Nation: USA. Agency: USAF. Manufacturer: Seal Beach. Program: Navstar. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Navstar. Spacecraft: GPS Block 1. USAF Sat Cat: 11054 . COSPAR: 1978-093A. Apogee: 20,941 km (13,012 mi). Perigee: 20,706 km (12,866 mi). Inclination: 63.30 deg. Period: 744.20 min.

  The third NAVSTAR satellite was launched from Vandenberg AFB on board an Atlas booster. Both the booster and the satellite itself functioned normally, and the satellite began operating at its final station on 31 October. Technology prototype of Navstar satellite.

• Navstar 4 - . Payload: GPS SVN 4 / OPS 5114. Mass: 770 kg (1,690 lb). Nation: USA. Agency: USAF. Manufacturer: Seal Beach. Program: Navstar. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Navstar. Spacecraft: GPS Block 1. USAF Sat Cat: 11141 . COSPAR: 1978-112A. Apogee: 21,012 km (13,056 mi). Perigee: 20,750 km (12,890 mi). Inclination: 64.60 deg. Period: 746.50 min. The fourth NAVSTAR satellite was successfully launched from Vandenberg AFB on board an Atlas booster. The satellite was due to begin operating at its final station in early January 1979. Global Positioning System. First pre-opertional Navstar satellite..

• Navstar 5 - . Payload: GPS SVN 5 / OPS 5117. Mass: 770 kg (1,690 lb). Nation: USA. Agency: USAF. Manufacturer: Seal Beach. Program: Navstar. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Navstar. Spacecraft: GPS Block 1. USAF Sat Cat: 11690 . COSPAR: 1980-011A. Apogee: 20,560 km (12,770 mi). Perigee: 19,805 km (12,306 mi). Inclination: 64.90 deg. Period: 718.00 min. Global Positioning System..

• Navstar 6 - . Payload: GPS SVN 6 / OPS 5118. Mass: 770 kg (1,690 lb). Nation: USA. Agency: USAF. Manufacturer: Seal Beach. Program: Navstar. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Navstar. Spacecraft: GPS Block 1. USAF Sat Cat: 11783 . COSPAR: 1980-032A. Apogee: 20,471 km (12,720 mi). Perigee: 19,387 km (12,046 mi). Inclination: 62.80 deg. Period: 707.80 min. Global Positioning System..