COMMISSION 27 OF THE I. A. U.
             INFORMATION BULLETIN ON VARIABLE STARS
                          Number 3498

                                                Konkoly Observatory
                                                Budapest
                                                3 August 1990

                                                HU ISSN 0374 - 0676



                        FLARE STAR T 176

  In Orion association there are few flare stars with high frequency of
flare-ups. Among them T176 = V909 Ori alpha (1900) =5h38.1m, delta (1900) 
=-7d21') shows
the highest frequency. As it was noted by Haro (1976) the flare star T176
cannot be a member of the association because of the large outburst incidence, 
the spectral type M2e-M3e and the kind of delta m observed during
several flare-ups. During the re-examination of the photographic material of
Tonantzintla Observatory 16 new flare-ups of that star were found (Table I)
which confirmed that T176 is a foreground flare star.

  Table I

New flare-ups of T176 = V909 Ori
No.   m_u    Delta m_u     date
    
 1.   15.8pg   0.8pg   07.03.1962
 2.   16.4     2.0     27.12.1964
 3.            0.5     26.01.1965
 4.            3.0     17.12.1965
 5.            1.5     23.12.1965
 6.            1.3     29.12.1965
 7.            1.0     17.02.1966
 8.            1.0     24.02.1968
 9.            2.5     22.01.1969
10.            4.0     20.02.1969
11.            1.3     06.12.1972
12.            0.5     11.02.1978
13.            0.5     04.03.1978
14.            2.5     07.03.1978
15.            0.5     08.03.1978
16.            3.2     27.11.1981



					E.S. PARSAMIAN
					Byurakan Observatory
					Armenia, USSR

					E. CHAVIRA
					Instituto de Astronomia,
					Optica y Electronica,
					Tonantzintla, Mexico


Reference:
Haro, G.: 1976, Bol. Inst. de Tonantzintla, 2, 3, 1976. [BIBCODE 1976BITon...2....3H ]