COMMISSION 27 OF THE I. A. U.
    INFORMATION BULLETIN ON VARIABLE STARS
                 NUMBER 541


                             Konkoly Observatory
                             Budapest
                             1971 April 22




PLANETARY NEBULA FG Sagittae STOPPED BRIGHTENING


  The peculiar object FG Sge, which is the central
part of a planetary nebula and which had risen rather
continuously from m_pg = 13.6 in 1894 to B = 9.5 in 1966
stopped brightening in B in the middle of 1967 and in V
in 1969.
  The following yearly means of photoelectric observations 
are to continue our table 1 in "Die Sterne" 43,
p. 24:


-----------------------------------------------------------
   Year       V      B-V        U-B       B         U    n
-----------------------------------------------------------
   1966.6    9.07  +0.42     +0.24       9.49      9.73  29
   1967.6    9.01    .44       .33       9.45      9.78  19
   1968.6    8.97    .50       .43       9.47      9.90  22
   1969.6    8.91    .60       .52       9.51     10.03  14
   1970.6    8.91    .76       .51       9.67     10.18  44
-----------------------------------------------------------

(n = number of nights),
For further details see forthcoming number of MVS.



1971 April 11
                                  W. WENZEL
                                  W. FURTIG
                     Deutsche Akademie der Wissenschaften
                       Zentralinstitut fur Astrophysik
                           Sternwarte Sonneberg