COMMISSION 27 OF THE I. A. U.
             INFORMATION BULLETIN ON VARIABLE STARS
                         Number 3513

                                                 Konkoly Observatory
                                                 Budapest
                                                 5 September 1990

                                                 HU ISSN 0374 - 0676


 THE CATACLYSMIC BINARY MV LYRAE RE-ATTAINED ITS UPPER LEVEL

  Contrary to the expectation of some theoreticians the 
cataclysmic variable MV Lyrae has re-attained the brightness
(B ~= 12.5m) of its "active" state. We observed the star on 
plates of the Sonneberg 40 cm astrographs and of the Sky Patrol
in continuation of our previous investigation (Wenzel and
Fuhrmann 1989) and noticed that its mean brightness continued
to increase in the last part of 1989, and after the sun gap
the object has been presenting itself in the high state. The
star had left this upper level in 1979 - for a complete long-
term lightcurve before and including this fading see e.g.
Wenzel and Fuhrmann (1983). Afterwards MV Lyrae showed an 
extraordinarily strong activity (Andronov, Fuhrmann, Wenzel
1988), characterized by eruptions rising from the minimum
state, but never reaching the maximum high level.


                       [FIGURE 1]


    Figure 1 shows the ascending branch of 1989 and the 
maximum observations of 1990. The B system of comparison star
magnitudes of Andronov and Shugarov (1982) was used: smaller
dots denote values of less weight, and the arrows indicate
"fainter-than" observations.


                                     B. FUHRMANN, W. WENZEL
                                      Sternwarte Sonneberg
                                 Zentralinstitut fur Astrophysik
                                 Akademie der Wissenschaften der
                                              DDR


References:

Andronov, I.L., Shugarov, S. Yu., 1982, Astron. Tsirk. No. 1218, 3 [BIBCODE 1982ATsir1218....3A ]
Andronov, I.L., Fuhrmann, B., Wenzel, W., 1988, Astron. Nachr. 309, 39 [BIBCODE 1988AN....309...39A ]
Wenzel, W., Fuhrmann, B., 1983, Mitt. Veranderl. Sterne 9, 175 [BIBCODE 1983MitVS...9..175W ]
Wenzel, W., Fuhrmann, B., 1989, Inf. Bull. Variable Stars No. 3391