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• W1491125378 abstract "University of Tokyo and Japan Aerospace Exploration Agency (JAXA) are developing a 50kg-class microspacecraft named “PROCYON” for deep space exploration. PROCYON will conduct two missions: 1) demonstration of micro-spacecraft bus system for deep space exploration, and 2) demonstration of asteroid close flyby observation. In order to develop the spacecraft with very low cost (less than a few million dollars), most of the bus system is based on that of Earth-orbiting micro satellite, excluding the communication system and propulsion system which are newly developed for the deep space mission. PROCYON is scheduled to be launched at the end of 2014 together with Japanese second asteroid sample return spacecraft Hayabusa-2. The success of PROCYON will demonstrate that a small-scale spacecraft for deep space exploration can be built with very low cost, which will enable more frequent and challenging deep space exploration. INTRODUCTION In recent years, the size and cost of Earth-orbiting satellites have been reduced, and frequent launch and operation of satellites has been realized. The first step of this big wave was the launch of CubeSats, 1kg nanosatellites, made by several universities including University of Tokyo in June 2003 [1]. A number of universities around the world now have been building nano-satellites for the purpose of students’ education and technology demonstration, and several venture companies are pursuing the practical use of nanosatellites in the area of earth observation, space science, or space demonstration [2]. On the other hand, deep space exploration, not Earthorbiting mission, still remains large-scale (>500~1000 kg) and high-cost (>100 million ~ 1 billion dollars) mission. The risk of failing such a large mission causes the difficulty to execute challenging and advanced mission, although the deep space exploration itself should be challenging in nature. In order to overcome such difficulty, small-scale and low-cost deep space mission should be realized, and it will contribute to high-frequent and challenging deep space exploration. For the first step of this attempt, Intelligent Space Systems Laboratory (ISSL) at the University of Tokyo and the Japan Aerospace Exploration Agency (JAXA) started to develop 50kg-class micro-spacecraft for deep space exploration in the fall of 2013. The spacecraft is called PROCYON (PRoximate Object Close flYby with Optical Navigation). PROCYON is scheduled to be launched together with Japanese second asteroid sample return spacecraft Hayabusa-2 [3] at the end of 2014. As of June 2014, PROCYON is in the phase of its final integration test. MISSION OF PROCYON PROCYON has two missions: 1) demonstration of micro-spacecraft bus system for deep space exploration, and 2) demonstration of asteroid close flyby observation. Fig. 1 shows the mission sequence of PROCYON. PROCYON will be launched with Hayabusa-2 and initially inserted into an Earth resonant trajectory that allows the spacecraft to come back to the Earth by solar electric propulsion. Within several months after the launch, the first mission (demonstration of the bus system) will be completed. Then, PROCYON will perform DSM (Deep Space Maneuver) using its" @default.
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• W1491125378 date "2014-01-01" @default.
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• W1491125378 title "50kg-class Deep Space Exploration Technology Demonstration Micro-spacecraft PROCYON" @default.
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