Deep near infrared photometry of the newly discovered Galactic globular Cluster GLIMPSE-C01 is reported .
We derived for the first time the metal abundance of this object from the slope of the RGB : [ Fe/H ] = - 1.61 \pm 0.14 in the scale of Zinn ( as implemented in Harris [ 1996 ] ) , [ Fe/H ] = - 1.44 \pm 0.12 in the scale of Caretta & Gratton ( [ 1997 ] ) , and [ Fe/H ] = - 1.12 \pm 0.12 in the scale of Ferraro et al .
( [ 1999 ] ) .
The tip and the clump of the red giant branch were used to confirm the estimates of Kobulnicky et al .
( [ 2005 ] ) , placing the cluster at D \sim 3.7 \pm 0.8 kpc , behind A _ { V } \sim 15 mag of visual extinction .
The best fit to the radial surface brightness profile with a single-mass King ’ s model ( [ 1962 ] ) yielded core radius r _ { c } =0.78 arcmin , tidal radius r _ { t } =27 arcmin , and central concentration c=1.54 .

Finally , we estimate the number of the “ missing ” globulars in the central region of the Milky Way .
Based on the spatial distribution of the known clusters , and assuming radial symmetry around the Galactic center , we conclude that the Milky Way contains at least 10 \pm 3 undiscovered objects .
The distribution of known clusters in the bulge seem to resemble the orientation of the Milky Way bar .