We present detailed chemical abundances , radial velocities and orbital parameters for FSR 1758 , a recently discovered star cluster in the direction of the Galactic Bulge .
High resolution ( R \sim 42,000 ) spectra were obtained using the Magellan/Clay telescope instrumented with MIKE echelle spectrogragh , wavelength range \sim 4900-8700 Å .
Cluster membership was determined using Gaia DR2 proper motions and confirmed with our radial velocity measurements .
We find metallicity consistent with previous photometric estimates for this cluster , [ Fe/H ] = -1.58 \pm 0.03 dex , with a small , 0.08 dex , spread .
While other studies have suggested this massive object may be the result of a previous accretion event , our results are consistent with Milky Way Halo globular clusters with characteristic Na-O anti-correlations found for the metal-poor cluster members .
The mean radial velocity of the cluster , +226.8 \pm 1.6 km s ^ { -1 } with a small velocity dispersion , 4.9 \pm 1.2 km s ^ { -1 } , is typical for globular clusters .
We also confirm a retrograde Galactic orbit that appears to be highly eccentric .