COMMISSION 27 OF THE I. A. U. 
        INFORMATION BULLETIN ON VARIABLE STARS
                    Number 1380

                                   Konkoly Observatory
                                   Budapest
                                   1978 January 11



           A NEW VARIABLE STAR IN NGC 5139



   By 15 blinking pairs of 103a-D+GG 11 and 103a-O+GG 13 plates
obtained in the Newtonian focus of the 1.54 m reflecting 
telescope (diaphragmed to 1.10 m) of the Astrophysical Station at
Bosque Alegre, Cordoba, Argentina, a new long-period variable
was found in NGC 5139. The location of V 184 in our cluster 
according to "A Third Catalogue of Variable Stars in Globular Clusters"
by Helen Sawyer Hogg (1973) is shown in Figure 1 and its 
coordinates in seconds of arc x"=-412.5; y"=+22.0.

                     [FIGURE 1]

  The photographic plates are of very short exposure (5m)
so that the centre of the cluster is not overexposed and the
stars it is composed of, can be seen. This new variable star
is near the centre of the cluster which is probably the reason
it had been overlooked.
  The position of the new variable in the colour-magnitude
diagram is shown in Figure 2.

                    [FIGURE 2]


CARLOS RAUL FOURCADE       JOSE R. LABORDE       ERNESTO YURQUINA
Observatorio Astronomico de la Universidad Nacional de Cordoba
                Republica Argentina