COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      NUMBER 12


                                   Konkoly Observatory
                                   Budapest
                                   28 June 1962


                    377.1943 SAGITTAE

      G. Richter of Sonneberg Observatory has discovered the star
brightening continuously since 1890 at a rate of 0m.05 per year in 
photographic magnitude (MVS 414).


      Further peculiarities are:

      1. The disk-shaped structure of the photographic image of
the object on both red and blue sensitive charts of the Palomar Sky
Survey Atlas. The diffraction pattern is entirely missing, just as in the
case of planetary nebulae for instance. The diameter of the disk is
roughly 30 seconds of arc.

       2. The star undergoes rapid light changes of small amplitude
(0m.1) and short duration (rise in 2d). Our photoelectric observations
seem to show that the rise to the bursts begins first in the short wave
region of the spectrum while in the visual range the brightness is still
declining. Our restricted material shows two such cases.

       3, Relative to the comparison star BD +19deg 4314 (spectral
type near A0 according to Sonneberg objective prism plates) the mean
brightnesses of the variable during the first half of June 1962 are:


            u = -0mag.48; b = -0mag.15; v = -0mag.40

in the system of our instrument. The system should not be very
different from the international UBV system. The amplitudes of light
variation in the three colours were 0mag.10, 0mag.12, and 0mag.10
respectively.


                                   W. FURTIG and W. WENZEL
                                   Sonneberg Observatory
                                              of
                                 German Academy of Sciences