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STS 51



STS 51 was the seventeenth flight of the Discovery orbiter. Its main mission goals were to deploy the Advanced Communications Technology Satellite (ACTS) and ORFEUS-SPAS. In addition to the the two spacecraft in the cargo bay, STS 51 also carried the Limited Duration Space Environment Candidate Materials Exposure (LDCE) experiment. Mid-deck experiments included the fourth flight of the Chromosome and Plant Cell Division in Space experiment (CHROMEX 4), the third flight of the Radiation Monitoring Equipment (RME-III), the Air Force Maui Optical Site (AMOS), the second flight of the Auroral Photography Experiment (APE-B), the Commercial Protein Crystal Growth (CPCG) experiment, the first flight of the High-Resolution Shuttle Glow Spectroscopy (HRSGS-A) experiment, the Investigations into Polymer Membrane Processing (IPMP) experiment, and more IMAX photography.

Alternate Names

  • 22795
  • STS51

Facts in Brief

Launch Date: 1993-09-12
Launch Vehicle: Shuttle
Launch Site: Cape Canaveral, United States
Mass: 19360 kg

Funding Agencies

  • NASA-Office of Space Flight (United States)
  • NASA-Office of Space Science Applications (United States)


  • Communications
  • Human Crew
  • Astronomy

Additional Information

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



NameRoleOriginal AffiliationE-mail
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