1 Introduction

Star GSC2U J131147.2+292348 was identified during a proper motion survey for cool halo white dwarfs (WDs) based on photographic material used for the construction of the Second Guide Star Catalogue (GSC-II) (see, e.g., Lasker et al. 1995; McLean et al. 2000). The object is located near the North Galactic Pole (NGP) at $l\simeq 61^\circ$, $b \simeq 85^\circ$, is fast moving ( $\mu\simeq 0.48$ arcsec yr^-1), and faint ( $V\simeq 18.7$), as expected for a low luminosity object in the solar neighborhood. An accurate check on the SIMBAD database revealed that the star is not in the NLTT catalogue (Luyten 1979) but, quite surprisingly, is listed as a quasar candidate (object OMHR 58793) by Moreau & Reboul (1995), who measured an UV excess but did not detect any proper motion.