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MightySat-1 photograph
Mission type Technology
Operator AFRL
COSPAR ID 1998-069C
SATCAT no. 25551[1]
Spacecraft properties
Manufacturer Orbital Sciences
Launch mass 320 kilograms (710 lb)[2]
Dry mass 63.5 kilograms (140 lb)
Start of mission
Launch date December 4, 1998 (1998-12-04)
Rocket Space Shuttle Endeavour (STS-88)
Launch site Kennedy LC-39A
End of mission
Decay date November 21, 1999, 17:11 (1999-11-21UTC17:12Z) UTC
Orbital parameters
Reference system Geocentric
Regime Low Earth
Eccentricity 0.00095976377
Perigee 388.0 kilometers (241.1 mi)
Apogee 401.0 kilometers (249.2 mi)
Inclination 51.6& degrees
Period 92.4 minutes
Epoch January 4, 1999[1]

MightSat-1 was a small spacecraft developed by the U.S. Air Force's Phillips Laboratory (now part of the Air Force Research Laboratory Space Vehicles Directorate) to test technology for small satellites, including advanced dual-junction solar cells, a composite structure, a micrometeorite and debris detector, low-power electronics and a low-shock release device.[2] The 140-pound satellite was launched from the Space Shuttle Endeavour in December 1998, during the 12th day of the STS-88 mission[2] and performed robustly in orbit, with no spacecraft anomalies during its mission. Lt. Barbara Braun of the AFRL was the program manager for the satellite.[2]

MightySat-1's mission ended when it re-entered the atmosphere at 17:11 UTC on November 21, 1999.[3]


  1. ^ a b McDowell, Jonathan. "Master Satellite List". Jonathan's Space Report. Retrieved 26 February 2014. 
  2. ^ a b c d "MightySat 1". Astronautix. Retrieved 26 February 2014. 
  3. ^ "MightySat-1". GlobalSecurity.org. Retrieved 2008-07-29.