The Blind Moon is the name given to one of Cardassia's three moons. It is never visible on its own as one of the other moons are always visible with it. (DS9 novels: A Stitch in Time, Hollow Men)

Cardassia system
Cardassia I • Cardassia II • Cardassia III • Cardassia IV • Cardassia V • Cardassia VI (Blind Moon • Letau) • Cardassia VII • Cardassia VIII