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Thor MG-18

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Status: Retired 1965. First Launch: 1965-01-19. Last Launch: 1965-03-18. Number: 2 . Thrust: 668.00 kN (150,172 lbf). Gross mass: 50,000 kg (110,000 lb). Height: 23.00 m (75.00 ft). Diameter: 2.44 m (8.00 ft). Apogee: 1,000 km (600 mi).

• DMSP-Block-4A F1 - . Payload: DAPP 10 / OPS 7040. Mass: 150 kg (330 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft Bus: DMSP. Spacecraft: DMSP Block 4A. Decay Date: 1979-07-13 . USAF Sat Cat: 973 . COSPAR: 1965-003A. Apogee: 833 km (517 mi). Perigee: 462 km (287 mi). Inclination: 98.80 deg. Period: 97.60 min.

  The first Air Force Thor/Altair (Burner I) space booster was launched from Vandenberg AFB. The Altair upper stage was the fourth stage of the Scout rocket. Defense Meteorological Satellite Program. Launch date was January 18, 1965. The launch was successful and correct orbit was achieved. However, the heat shield on the second stage did not deploy correctly and the mission objectives were not fully realized. This first Burner I bird is distinguishable in photos by its black second stage.

• DMSP-Block-4A F2 - . Payload: DAPP 11 / OPS 7353. Mass: 130 kg (280 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft Bus: DMSP. Spacecraft: DMSP Block 4A. Decay Date: 1989-12-31 . USAF Sat Cat: 1273 . COSPAR: 1965-021A. Apogee: 146 km (90 mi). Perigee: 139 km (86 mi). Inclination: 99.00 deg. Period: 87.30 min. Defense Meteorological Satellite Program. A fully successful launch with all objectives met. The night launch time of 2100 hrs Vandenberg time with a 5 minute launch window was the same for both the first and second Burner I launches..