COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                     NUMBER 436

                              Konkoly Observatory
                              Budapest
                              1970 May 11


                KM CASSIOPEIAE

      In the Third Edition of the General Catalogue of
Variable Stars (1), the spectral type of KM Cas is given
as M6e-alpha. Objective-prism observations of the spectrum have
been reported from Mt.Wilson (2), Tonantzintla (3), the
Crimean Astrophysical Observatory (4), and Hamburg (5),
(6), and are summarized in the following table:

Name          Spectral Type             Magnitude          Reference
              and Remarks
KM Cas        M6e-alpha                 12.3-13.1
              				photogr.             (1),(7)
AS 59         Halpha emission
              of moderate
              strength                             10 vis.   (2)
GG1 174       Halpha emission weak                           (3)
BS +61 161    cB1                       12.38
                                        photogr. 11.36 vis.  (4)
LS I +61 270  OBce; Halpha
              emission
              not seen                  12.2
                                        photogr.            (5),(6)

       KM Cas is listed as of type SRa, with a period of
about 720d derived from the magnitudes listed by Holopov
(7). Given the observed absence of a very strong Ha emission
line heretofore, one is not led to suggest that KM Cas is a
symbiotic object. It will be of interest, however, to search
for the other emission lines which are to be expected in
the spectrum of a luminous binary of VV Cephei type.


                         LLOYD.R.WACKERLING
                       Lindheimer Astronomical
                          Research Center
                       Northwestern University
                        Evanston, Ill. U.S.A.


References
(1) B.V.Kukarkin, P.N.Holopov, Ju.N.Efremov, N.P.Kukarkina
    N.E.Kurockin, G.I.Medvedeva, N.B.Perova, V.P.Fedorovic
    and M.S.Frolov; General Catalogue of Variable Stars.
(2) P.W.Merrill and C.G.Burwell; 1950 Astrophys.J. 112, 72. [BIBCODE 1950ApJ...112...72M ]
(3) G.Gonzales and G.Gonzales; 1954 Bol.Obs. Tonantzintla y
    Tacubaya 1, No. 9, 3.
(4) E.S.Brodskaja and P.F.Sajn; 1958 Izvest.Krymsk.Astrofiz.
    Obs. 20, 299 [BIBCODE 1958IzKry..20..299B ]
(5) J. Hardorp, K.Rohlfs, A.Settebak and J. Stock; Luminous 
    Stars in the Northern Milky Way. I. Hamburg-Bergedorf
    1959 [BIBCODE 1959LS....C01....0H ]
(6) H.H. Voigt; Halpha emission of 'Luminous Stars in the Northern 
    Milky Way. I.', Hamburg-Bergedorf 1965.
(7) P.N.Holopov; 1949 Peremenn. Zvedy, 7, 101