COMMISSION 27 OF THE I. A. U
        INFORMATION BULLETIN ON VARIABLE STARS
                     NUMBER 253

                                      Konkoly Observatory
                                      Budapest
                                      1968 February 8


        ON THE VARIABLE STAR IN FIELD OF M 2


The brightness of the variable star (x=+315", y=+208") discovered by R.
Margoni and R. Stagni in field of the globular cluster M2=NGC 7089 (IBVS 239,
1967 December 9) was estimated on 61 Moscow plates (J.D. 2437 087-277). The
star belongs to the RRab-type with the following elements:

Max=J.D. hel. 2437138.233+0.^d7121*E

The photographic magnitudes in system of V.I. Kulikov (VS 13, 400, 1961) are
15.^m7 at max. and 16.^m2 at min., respectively; M-m=0.^p22.


                                            B. KUKARKIN
Moscow,
Sternberg Astronomical
Institute
January 31, 1968




                  NEW VARIABLE STAR IN LACERTA


During photoelectric observations of AR Lac, the variability of the star
BD+46d3572 (=HD 209813, 7.^m52 pg., K0) was detected. This star was not
reported in "Catalogue of Stars Suspected of Variability" (Moscow 1951),
neither in more recent catalogues of variable stars.

Systematic observations in three colours (U, B, V), using BD 45d3741 (=HD
208728, 8.^m02 pg., K0) as comparison star, gave the following preliminary
elements:

Max hel.=JD 2439766.5+25.^d98*E

Amplitude of variation about 0.^m1 for all colours.

                          [FIGURE 1]

According to spectral type, period, amplitude of variations and light curve (s.
Figure), the variable is probable a Cepheid.


                                              C. BLANCO
                                              S. CATALANO
Osservatorio Astrofisico di Catania
January 30, 1968