COMMISSION 27 OF THE I. A. U.
       INFORMATION BULLETIN ON VARIABLE STARS
                   NUMBER 603

                                   Konkoly Observatory
                                   Budapest
                                   1971 December 21


             A NEW VARIABLE STAR IN OPHIUCHUS


On the occasion of visual observations of the irregular variable V 513 Oph it
turned out that the star

18h7m40s   +5d10.'1  (1855.0)
18h12m20s  +5d11.'4  (1950.0)

used as comparison star had sometimes shown lightvariations between 10.3 and
11.8 visual magnitudes. The observations were carried out with the 26 cm
refractor of the Hamburg Observatory.

The light curves obtained for the intervals J.D. 2440417-561, 40797-906 and
41145-268 showed irregular oscillations with a cycle of about 100 days.
Shorter waves of 25 to 35 days were superposed on these oscillations.

The light variation of the star was confirmed by Dr. P. Ahnert (Sonneberg
Observatory).

According to its image on the photographic Franklin-Adams-Chart No. 110 the
star seems to be scarcely coloured.


M. BEYER
205 Hamburg 80
Justus-Brickman-Str. 101