You know PROCYON is looks like tiny Hayabusa probe ?
PROCYON is 65kg interesting small asteroid probe
Objective are deep space X-band communication experiment, VLBI navigation, high resolution observation during asteroid fast fly-by.
Development time is 1 year, very limited time. Thanks to the Hodoyoshi satellite project, they can utilize the small Xe ion engine (thrust is smaller than 1/100 scale of Hayabusa 2), Ion thruster and COld-gas thruster Unified Propulsion System (I-COUPS).
Target asteroid is not determined yet. They will determie after the ion engin test result. 1.5 to 2 year mission will be expeted.
PROCYON will be fly by the targeted asteroid from about 30 km altitude. High resolution images are expected but fast motion is difficalt to capture the images. Therefoe, they developed quick mirror tracking device to the canceling the fly-by motion.
More detail is here (Japanese).http://news.mynavi.jp/articles/2014/11/13/procyon/
MIPS(Miniature Ion Propulsion System) for Hodoyoshi-4 article is here (Japanese).http://monoist.atmarkit.co.jp/mn/articles/1307/29/news005.html