Lilleг 1 K, J-K CMD (left panel, gray dots) with, highlighted, the metal-poor (red-filled circles) and metal-rich (blue-filled squares) likely member stars, for which we measured chemical abundances (see Sect. 3.2), and distribution of these stars on the plane of the sky with respect to its center, marked with the black cross and located at RA=263.°3523333, Dec=−33.°3895556 (right panel). The dashed black circles have radii equal to 10, 20, and 30 times the core radius r_c = 5.″39 (Saracino et al. 2015).