COMMISSION 27 OF THE I. A. U.
            INFORMATION BULLETIN ON VARIABLE STARS
                         Number 3480


                                               Konkoly Observatory
                                               Budapest
                                               14 June 1990

                                               HU ISSN 0374 - 0676


                   THREE NEW VARIABLE STARS

   A continuing photographic patrol has resulted in the discovery of three
more variable stars brighter than 10th magnitude. The positions and preliminary
ranges, types, and periods are presented in Table I, which continues the list
in Kaiser et al. (1990).

                     TABLE I.

Var.	   RA		   D		Range(V)	Type	P (days)
design.	 1950		 1950		

DHK 14	 4h55m50s	+24d25.2'	8.0-8.5		EB	1.385
DHK 15	 9 51 18	+10 29.7	7.8-8.0		SR:	?
DHK 16	 9 41 22	+25 35.1	9.2-9.9		EA	1.374


DHK 14 = BD 24d719, HD 31679, SAO 76868 (Tau)
   The spectral type is B5. The light curve shows continuous variation, with the
primary minimum about 0.5m, deep and the secondary 0.3m. Photoelectric
observations are reported by Williams et al. (1990).

DHK 15 = BD +10d2067, HD 85720, SAO 98835 (Leo)
   The spectral type is M7. Variability within the given magnitudes has been
confirmed by photoelectric measures, which are continuing and will be reported
when the period (if type SR) and full amplitude are better defined.

DHK 16 = BD +26d1996, SAO 80992 (Leo)
   The spectral type is G0. Photoelectric observations show a primary minimum
0.7m deep and secondary about 0.6m. The eclipses are three hours in duration.
A full report will be published at the end of the observing season.

  Some of the information in this report was obtained from the SIMBAD data
retrieval system, database of the Strasbourg, France, Astronomical Data Center,
for which I thank Joyce Rey-Watson of the Harvard-Smithsonian Center for
Astrophysics and Elizabeth Waagen of the AAVSO staff. The variables were
detected with a projection blink comparator (PROBLICOM) as described by Mayer
(1977). I am grateful to Marvin E. Baldwin, David B. Williams, and James E.
Wood for observations to confirm variability and determine periods and types.
Their observations will be presented more fully in later reports on each star.


                         DANIEL H. KAISER
                         2631 Washington Street
                         Columbus, Indiana 47201 USA


REFERENCES

Kaiser, D. H., Baldwin, M. E., and Williams, D. B., 1990, 
  Inform. Bull. Var. Stars No. 3442.
Mayer, B., 1977, Sky & Telescope 54, 246.
Williams, D. B., Wood, J. E., and Kaiser, D. H., 1990, 
  Inform. Bull. Var. Stars No. 3481.