COMMISSION 27 OF THE I. A. U.
             INFORMATION BULLETIN ON VARIABLE STARS
                         Number 3174

                                         Konkoly Observatory
                                         Budapest
                                         12 April 1988

                                         HU ISSN 0374-0676


                    A NEW VARIABLE STAR IN VIRGO

  In an observational program of the delta Scuti star HD 114842, SAO 139186 was
used as comparison star and SAO 139174 (BD -1 2777 = HD 114125) as check
star. The observations showed that while SAO 139186 kept a nearly constant
brightness, SAO 139174 presented an undoubted photometric variability on
18 March. This last star is not present in any of the variable star catalogues,
hence it has to be considered as a new variable star. SAO 139174 was observed on
two nights in March 1988 by using the simultaneous uvbybeta Stromgren photometer
attached to the 75 cm reflector at the Sierra Nevada Observatory in Spain.


                              [FIGURE 1]


  The Figure shows the light curves of 18 and 19 March in the y filter.
The magnitudes are differences SAO 139174 - SAO 139186 in the instrumental
system. Although the light curve is very incomplete, it suggests that we
are dealing with an eclipsing binary system. The magnitude difference between
out of eclipse level and the minimum brightness is 0.23m in the y filter and
the time of minimum is JD = 2447239.6051 +/- 0.0010.
  More photometric observations are clearly needed on this new variable
star.





                      E. RODRIGUEZ
                      J.L. SEDANO
                      P. LOPEZ DE COCA
                      A. ROLLAND
                      Instituto de Astrofisica de
                      Andalucia
                      Apdo. 2144, Granada, Spain