Near-Infrared Photometry of a Space Mission Target Asteroid
KINOSHITA, D.

Abstract: Hayabusa 2 is a space mission to a near-Earth asteroid 1999 JU3, primarily by the Japanese space agency ISAS-JAXA. Both intensive, in-situ observations and sample return are planned. The launch of the, spacecraft is planned in 2010. This mission tries to characterize, physical and chemical properties of a sub-km sized C-type asteroid. In, order to acquire basic information necessary for the design of the, mission, coordinated ground-based observations are planned from July, 2007 to February 2008. No near-infrared observation has been conducted, so far, and this program tries to utilize CFHT-WIRCam to carry out, near-infrared photometric observations of a target asteroid of, Hayabusa 2 mission. This will be a very first look of near-infrared, properties of 1999 JU3. Our major objectives are (1) the overall, reflectance properties of 1999 JU3 in near-infrared wavelength, (2), the signature of silicates, (3) the existence or non-existence of, water, and (4) the existence or non-existence of organic compounds., These information is important for the mission planning.