Location of different classes of objects in the plane of absolute magnitude vs. half-light radius. Filled circles are Galactic GCs (from Harris 1996), open circles are Milky Way satellites (Irwin & Hatzidimitriou 1995; Mateo 1998; Willman et al. 2005; Zucker et al. 2006a, 2006b; Belokurov et al. 2006b, 2007). The location of Palomar 14 is marked with an open star.