COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1889

                                     Konkoly Observatory
                                     Budapest
                                     1980 December 16

                                     HU ISSN 0374-0676


                 FLARE STARS IN ORION


   In the course of a programme to discover flare stars in stellar 
aggregates we have started the patrol observations of Orion
(M 42) nebula.
   The observations were made with the 20"/28"-Schmidt telescope
of the Bulgarian National Astronomical Observatory in Rojen on
ORWO ZU 21 emulsion with UG 2 filter. 22 plates each with six
successive exposures of 10 minutes were obtained and the total
time of effective patrol was 22 hours.
   Table I gives the information about the flare events.

                    Table I
Rojen N Parenago N RA(1900.0) D(1900.0) m_{Umin} Delta m_U  Date(UT) Identification
R 1               5h26m34s    -4 d17.0'  18.5m    4.8m   17.11.1980
R 2                 28 17     -4  55.8   18.3     3.5    17.11.1980 43 (1)
R 3       1292      28 58     -4  20.6   16.1     3.1    14.01.1980 ealpha-3 (2)
R 4       2203      30 52     -5  05.5   17.1     2.2    14.01.1980 CE Ori
R 5       2372      31 23     -5  08.9   15.8     1.7    18.01.1980
R 6                 32 40     -4  16.9   18.1     3.0    10.02.1980
R 7                 34 55     -6  28.2   17.4     2.4    17.11.1980 173 (3)
R 8                 38 05     -4  32.0   16.2     1.0    10.02.1980


           M.K. TSVETKOV, S.A. TSVETKOV, ASSYA G. TSVETKOVA
        Department of Astronomy with National Astronomical
        Observatory, Bulgarian Academy of Sciences,
        Sofia-1000, 7th November Street 1. Bulgaria



References:
1. Kiladze, R.I., Natsvlishvili, R.S. 1980, I.B.V.S., No. 1725.
2. Haro, G. 1952, Ap.J., 117, 73. [BIBCODE 1953ApJ...117...73H ]
3. Haro, G., Chavira, E. 1969, Bol. Obs. Tonantzintla y Tacubaya,
     5, No. 32, 59. [BIBCODE 1969BOTT....5...59H ]