COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      Number 1109

                                    Konkoly Observatory
                                    Budapest
                                    1976 March 3



        AN URSAE MAJORIS AS AN ECLIPSING BINARY


    Recently Kukarkin (1975) indicated that the novalike variable 
AN Ursae Majoris is an eclipsing binary of short period. A
preliminary analysis of data obtained at Kitt Peak National 
Observatory appear to confirm this result. The star was monitored
photoelectrically in blue light on three nights with the No. 2,
0.9-meter reflector. Four minima were observed at the times given 
below. The residuals, second column, are based on light elements 
that combine Kukarkin's value for the epoch with a somewhat 
shorter period,

      Min. J.D. hel. = 2442502.285 + 0.1594205 E.

    A more complete discussion is to be published.

                      JD hel
                    2442000 +
                   805.9813   +0.0002
                   806.9378   +0.0001
                   807.7345   -0.0002
                   807.8938   -0.0003



                            G.S. MUMFORD

                           Tufts University
                           Medford, Mass. USA

Reference:
   Kukarkin, B.V. 1975, Inf.Bull.on Variable Stars, No. 1039.