This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com
Class: Military. Type: SDI. Nation: USA. Agency: U.S. Air Force.
Total Mass: 180 kg.
19 May 1994
STEP 2 (SIDEX) Program: STEP. Launch Site: Edwards . Launch Vehicle: Pegasus. Mass: 180 kg. Perigee: 597 km. Apogee: 813 km. Inclination: 82.0 deg.
Did not achieve planned orbit, though still useful. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).
27 June 1994
STEP 1 Program: STEP. Launch Site: Vandenberg . Launch Vehicle: Pegasus XL. FAILURE: Destroyed on launch .
Destroyed on launch
22 October 1997
STEP-4 Program: STEP. Launch Site: Wallops Island . Launch Vehicle: Pegasus XL. Perigee: 432 km. Apogee: 500 km. Inclination: 45.0 deg.
- 4 - McDowell, Jonathan, Jonathan's Space Report (Internet Newsletter), Harvard University, Weekly, 1989 to Present. HTML when accessed: ftp://sao-ftp.harvard.edu/pub/jcm/space/news
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Last update 12 March 2001.
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