BD+61(deg)2213: an interesting ellipsoidal or eclipsing variable in the open cluster NGC 7160

Light variability of BD+61 � 2213, first suspected more than 20 years ago, is confirmed on the basis of obser- vations from three observatories. The light of BD+61 � 2213 ap- parently varies with a period of 1 d .2028251 and a double-wave light curve. Five available radial velocities of the star also de- fine a large-amplitude curve with the same period. The star is, therefore, a binary as suspected earlier. We conclude, however, that it is more probably an ellipsoidal variable than an eclipsing binary. Its further spectral and photometric monitoring is desir- able, especially since an accurate detemination of its physical elements could also improve the knowledge of the distance of the NGC 7160 cluster.