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Castor-Recruit

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Status: Retired 1962. First Launch: 1962-10-20. Last Launch: 1962-10-20. Number: 1 . Diameter: 0.79 m (2.59 ft). Apogee: 150 km (90 mi).

• CHECKMATE Nuclear test - . Nation: USA. Agency: AEC. Apogee: 147 km (91 mi).

  Test of the Los Alamos XW-50X1 60 kiloton nuclear warhead. Launch vehicle was a solid propellant XM-33 Strypi rocket with a Recruit booster stage. The warhead detonated at an altitude of 147 km, 66 km from Johnston Island. Observers on the island saw a green and blue circular region surrounded by a red ring. This faded in less than a minute. Blue-green streamers and pink striations developed that lasted half an hour. At this yield, even with the high altitude, extensive disruption of communications were not reported.