COMMISSION 27 OF THE I. A. U.
       INFORMATION BULLETIN ON VARIABLE STARS
                    NUMBER 626

                                   Konkoly Observatory
                                   Budapest
                                   1972 February 8


                    V 462 CYGNI


The variable star V 462 Cygni was observed on objective-prism IIaO plates
obtained on July 27, 1971 with the 60/90/183 cm, 4deg prism (350 A/mm at H
Gamma) Schmidt telescope at Campo Imperatore. The spectrum (see figure) is
typical of a long period variable near maximum light. The spectral type is M7
or M8 with H Gamma to H_11 in emission. H delta is the strongest line with an
equivalent width of 6.5 A. The star displays a strong ultraviolet excess. The
following magnitudes were measured from the tracings: m_3600=10.3
(uncertain) m_4400=11.8. W.P. Bidelman kindly informed us that on the Warner
and Swasey Observatory infrared plates it appears as a star of probably M7
spectral type. We acknowledge P.J. Treanor S.J. for helpful discussions.

                           [FIGURE 1]
 
            Smoothed Intensity Tracing of V 462 Cyg


G.B. BARATTA and A. CASSATELLA
Osservatorio Astronomico di Roma

R. VIOTTI
Laboratorio Astrofisico Spaziale, Frascati