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The Dash 2 satellite was a 2.5-m-diameter balloon used to measure air densities at altitudes of approximately 3500 km. The area-to-mass ratio for the spacecraft was 40 sq cm/g. The orbit, originally circular, increased in eccentricity rapidly under the action of solar radiation pressure. Dash 2 reentered the earth's atmosphere on April 12, 1971.

Alternate Names

  • 00624
  • DASH2

Facts in Brief

Launch Date: 1963-07-19
Launch Vehicle: Atlas-Agena D
Launch Site: Point Arguello, United States
Mass: 1 kg

Funding Agency

  • Department of Defense-Department of the Air Force (United States)


  • Earth Science

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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