Astrometry, which provides precise information about the position and motion of astronomical objects, is important to clarify the structure and the evolution of the Milky Way. However it is difficult to measure stars from the Earth because of blurring and distortion effects from the atmosphere. Therefore, the JASMINE project to observe stars while in orbit has been proposed by the National Astronomical Observatory of Japan. JASMINE is the abbreviation of Japan Astrometry Satellite Mission for INfrared Exploration. JASMINE aims to observe stars in the infrared range. The objective of this project is to measure the position and the motion of stars in the Milky Way, and to acquire basic data for other astronomical objects. At the ISSL lab at the University of Tokyo, Nano-JASMINE is planned as a pathfinder mission to verify some important technical issues for JASMINE and to acquire current star data.