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@InProceedings{MacauWint:2017:ExFiTi,
               author = "Macau, Elbert Einstein Nehrer and Winter, O. C.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade Estadual Paulista (UNESP)}",
                title = "The Aster mission: exploring for the first time a tiple system 
                         asteroid",
                 year = "2017",
         organization = "Asteroids, Comets, Meteors",
             abstract = "2001 SN263 is a triple system asteroid. Although it was discovery 
                         in 2001, in 2008 astronomical observation carried out by Arecibo 
                         observatory revealed that it is actually a system with three 
                         bodies orbiting each other. The main central body is an irregular 
                         object with a diameter about 2.8 km, while the other two are small 
                         objects with less than 1 km across. This system presents an 
                         orbital eccentricity of 0.47, with perihelion of 1.04 and aphelion 
                         of 1.99, which means that it can be considered as a Near Earth 
                         Object. This interesting system was chosen as the target for the 
                         Aster mission - first Brazilian space exploration undertaking. A 
                         small spacecraft with 150 kg of total mass, 30 kg of payload with 
                         110 W available for the instruments, is scheduled to be launched 
                         in 2021, and in 2022 it will approach and will be put in orbit of 
                         the triple system. This spacecraft will use electric propulsion 
                         and in its payload it will carry image camera, laser rangefinder, 
                         infrared spectrometer, mass spectrometer, and experiments to be 
                         performed in its way to the asteroid. This mission represents a 
                         great challenge for the Brazilian space program. It is being 
                         structured to allow the full engagement of the Brazilian 
                         universities and technological companies in all the necessary 
                         developments to be carried out. In this work, we present all those 
                         aspects of this mission, including its scientific goals, the 
                         transfer trajectories to be used, and the buss and payload 
                         subsystems that are being developed and will be used. Also, we 
                         discuss the expected scientific and technological consequences 
                         that are expected for the Aster mission.",
  conference-location = "Montevideo, Uruguay",
      conference-year = "10-14 Apr.",
             language = "en",
        urlaccessdate = "01 dez. 2020"
}


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