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We present the discovery of a faint, resolved stellar system, BLISSJ0321+0438 (BLISS 1), found in Dark Energy Camera data from the first observingrun of the Blanco Imaging of the Southern Sky (BLISS) Survey. BLISS J0321+0438(BLISS 1) is located at (RA, Dec) = (177.511, -41.772) deg with a heliocentricdistance of D = 23.7$^{+1.9}_{-1.0}$ kpc. It is a faint, Mv =0.0$^{+1.7}_{-0.7}$ mag, and compact, rh = 4.1 +/- 1 pc, system consistent withpreviously discovered faint halo star clusters. Using data from the second datarelease of the Gaia satellite, we measure a proper motion of $(\mu_\alpha \cos\delta, \mu_\delta)$ = (-2.37 +/- 0.06, 0.16 +/- 0.04) mas/yr. Combining theavailable positional and velocity information with simulations of the accretedsatellite population of the Large Magellanic Cloud, we find that it is unlikelythat BLISS J0321+0438 (BLISS 1) originated with the Large Magellanic Cloud.

A faint halo star cluster discovered in the Blanco Imaging of the Southern Sky Survey