Advanced Photovoltaic Experiment

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Operator NASA / DARPA
COSPAR ID 1994-046A
SATCAT № 23191
Mission duration 1 year (design life)
3 years (target)
22 months (achieved)
Spacecraft properties
Bus PegaStar
Manufacturer Orbital Sciences
Launch mass 260 kilograms (570 lb)
Start of mission
Launch date August 3, 1994, 14:38 (1994-08-03UTC14:38Z) UTC
Rocket Pegasus
Launch site Balls 8, Edwards Runway 04/22
Contractor Orbital Sciences
End of mission
Last contact June 4, 1996 (1996-06-05)
Orbital parameters
Reference system Geocentric
Regime Low Earth

Advanced Photovoltaic and Electronics Experiments, also known as APEX, was a satellite-based science mission launched into Low Earth orbit on August 3, 1994 by a Pegasus rocket. The mission successfully tested the use of photovoltaic and electronic components in space.[1]


  1. ^ Wade, Mark. "APEX".