Al-Mg systematic is a relative chronometer used for delineating various events taking place within the first few million years of formation of the Solar system. Asteroids are the remanants of the planetesimal building process that failed to accrete to larger bodies or formed due to impact collision between larger planetesimals. Al-Mg analyses on particles found on Itokawa asteroid would help compare the timescale of their formation (last resetting event) relative to Calcium Aluminum Inclusions (CAIs), the first forming solids in the Solar System.