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SOCRATES (Space Optical Communications Research Advanced Technology Satellite) is a microsatellite developed by NICT (National Institute of Information and Communications Technology), Koganei, Tokyo, Japan. The mission is to demonstrate and validate the operation of SOTA (Small Optical Transponder), a laser communication system in space for microsatellites and eventually in nanosatellites.

SOCRATES is built AES (Advanced Engineering Services Co.,Ltd. and uses the small satellite standard bus with two deployable solar arrays. The satellite is three axis stabilized.

Nation: Japan
Type / Application: Earth observation
Operator: NICT
Contractors: AES
Equipment: SOTA
Propulsion: Hydrogen peroxide thrusters
Power: 2 deployable fixed solar arrays, solar cells, batteries
Mass: 48 kg
Orbit: 625 km × 630 km, 97.88
Satellite COSPAR Date LS Launch Vehicle Remarks
SOCRATES 2014-029C 24.05.2014 Ta YLP-1 H-2A-202 with ALOS 2, SPROUT, Rising 2, UNIFORM 1

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