COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1836
 
                                   Konkoly Observatory
                                   Budapest
                                   1980 September 2
 
                                   HU ISSN 0374-0676



PROVISIONAL ELEMENTS FOR AN ECLIPSING VARIABLE IN SAGITTARIUS



  Number 155 in a catalogue of Sagittarius variables discovered 
by Dorrit Hoffleit (1972) was investigated by means of
eye estimates on approximately 500 plates at the Maria Mitchell
Observatory. It is of Algol type, 11.0-11.8 pg. Most of the work
of finding the period was done on a Radio Shack Level II computer
programmed to read Julian Days from cassette tape, calculate
phases for each test period, and display the resulting light
curves. The star has a close companion and is too bright for
most of the plates. This complicated the period search and the
results should be regarded as provisional. The elements are
  JD_min=2444025.73+2.145508 n.

                    [FIGURE 1]


  The light curve for full weight observations is shown in
the Figure. The abscissa is phase defined as the fractional
part of
  (JD-2436000)/2.145508.
The possibility that the period is spurious was tested by trying 
related periods. No other period satisfied the observations as well.
    This work was supported by the Dorrit Hoffleit Assistant-
ship Fund of the Maria Mitchell Association, for which I am
very grateful. I would also like to thank Dr. Emilia Belserene
or her advice and for the opportunity to pursue this project,
and Dr. Hoffleit for her valuable suggestions and guidance.







                         ANN SCHWARZMANN
                         Maria Mitchell Observatory
                         Nantucket, MA 02554,U.S.A.



Reference;
Hoffleit, D., 1972, I.B.V.S. No. 660