According to StarNews on August 14th, ASTRO Moonbin and Sanha will debut as ASTROŌĆÖs first subunit in September. The exact timing of the album release has not been decided yet, but the unit is working hard on a new album at the moment. Moonbin is ASTROŌĆÖs main dancer, and Sanha is the youngest member of the group. ASTRO debuted in February 2016 as a six-member boy group. Are you looking forward to the unitŌĆÖs debut? Source (1)