COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                    Number 1731

                                    Konkoly Observatory
                                    Budapest
                                    1980 January 21


      A NEW FLARE STAR IN THE PRAESEPE CLUSTER (=S 10834)


On a blue plate (ORWO-ZU2+filter GG13) with 5 exposures from 1978 March 1 taken
with the 200 cm telescope at Karl- Schwarzschild Observatory (Ziener, Lochno) a
new flare star was discovered. Its behaviour on this plate and further flares
observed on blue plates of the 50/70/172 cm Schmidt-type telescope at Sonneberg
Observatory in the period from 1977 March 8 to 1979 March 23 can be seen from
the table which summarizes the Julian Dates of the middles of the exposures,
their duration and the brightness in B. The mean brightness in minimum amounts
to B=18.04m.

The position of the new flare star is given to

8h32.82m +18d 48.7' (1900.0).

                              [FIGURE 1]

The identification chart, comprised in the Figure, represents an area of
approximately 7'x7'. North is on the top.

Table

J.D.244... B     Exp.time      J.D.244..   B       Exp.time
                  (min.)                            (min.)
3569.311  18.09m    2          3485.488    17.21m    60
     313  17.98     2          3524.483    17.10     60
     315  18.02     2          3596.329    17.21     60
     317  17.21     2          3933.356    17.10     30
     319  17.54     2


W. GOTZ
Akademie der Wissenschaften der DDR
Zentralinstitut fur Astrophysik
Sternwarte Sonneberg