(fwd) CVC No. 5

BELGIAN ASTRONOMICAL SOCIETY V.V.S. -  Working Group Variable Stars 
Cataclysmic Variables Circular No.5                   1994, June 06 
Ed.: P. Van Cauteren, de Borrekenslaan 54, 2630 Aartselaar, BELGIUM 
     73064.1123@compuserve.COM                    TEL. 32-3-8774098 
     T. Vanmunster, Walhostraat 1A, 3401 Landen, BELGIUM 
     Internet: tvm@lms.be                         TEL. 32-11-831504 
=================================================================== 
  
DI UMa [UG, 15p - 17.7p] 
======================== 
 
This dwarf nova type cataclysmic variable, which is on the Re- 
current Objects Programme of  The Astronomer Group,  once more 
is in outburst, as indicated by the observations below : 
 
1994 Jun 4.927 UT, [14.1 (G. Poyner, 0.40-m refl., seq: TA); 
     Jun 5.951 UT,  14.6 (T. Vanmunster, 0.35-m refl., seq: AAVSO); 
 
The star was last seen in outburst on 1994, May 10 (CVC No.3). 
 
 
UV Per [UGSU, 11.0v - 17.5v] 
============================ 
 
Refering to the outburst announcement in CVC No.4, we herewith 
include  photometric observations  covering the current super- 
outburst of UV Per.  New entries since our  Photometry  Update  
No.1 are labeled with an '*'. 
 
--------------------------------------------------------------------- 
DATE (UT)       MAGN  MS SEQ  OBSERVER         REMARKS         SOURCE 
--------------------------------------------------------------------- 
1994 05 17.956 [13.6  mv AA   Vanmunster, T.   35-cm refl.     VVS 
1994 05 22.084 [13.0  mv AA   Schmeer, P.      20-cm SCT       Mail(sch)
1994 05 29.913  11.9  mv AA   Vanmunster, T.   35-cm refl.     VVS 
1994 05 29.993  11.9  mv AA   Vanmunster, T.   35-cm refl.     VVS 
1994 05 30.917  12.1  mv AA   Vanmunster, T.   35-cm refl.     VVS 
1994 05 30.971  12.6  mv BAA  Worraker, B.     26-cm refl.     Mail(wor)
1994 05 30.987  12.3  mv AA   Pietz, J.        20-cm SCT       varstars 
1994 05 31.001  12.3  mv BAA  Poyner, G.       20-cm refl.     Mail(poy)
1994 05 31.001  11.5  mv AA   Poyner, G.       20-cm refl.     Mail(poy)
1994 05 31.008  12.4  mv BAA  Worraker, B.     26-cm refl.     Mail(wor)
1994 05 31.015  11.9  mv AA   Vanmunster, T.   35-cm refl.     VVS 
1994 05 31.047  11.8  mv AA   Schmeer, P.      20-cm SCT       Mail(sch)
1994 05 31.897  12.0  mv AA   Vanmunster, T.   35-cm refl.     VVS 
1994 05 31.969  12.2  mv AA   Jensen, L.       33-cm refl.     Mail(jen)
1994 05 31.986  11.9  mv AA   Vanmunster, T.   35-cm refl.     VVS 
1994 05 31.993  12.5  mv BAA *Poyner, G.       20-cm refl.     Mail(poy)
1994 05 31.999  11.6  mv AA  *Diepvens, A.     15-cm refr.     VVS 
1994 06 01.040  11.6  mv AA  *Schmeer, P.      20-cm SCT       Mail(sch)
1994 06 01.943  12.1  mv AA  *Jensen, L.       33-cm refl.     Mail(jen)
1994 06 03.008  12.2  mv AA  *Vanmunster, T.   35-cm refl.     VVS 
1994 06 04.994  13.0  mv BAA *Poyner, G.       20-cm refl.     Mail(poy)
1994 06 05.940  12.5  mv AA  *Vanmunster, T.   35-cm refl.     VVS 
 
 
IR Lyr [UG:, 14.6p - 16.0p] 
=========================== 
 
This peculiar variable finally is showing some interesting activity, 
as it has started to fade. It is critical to continue monitoring 
IR Lyr, on its way to a minimum. Please keep submitting your 
observations for a complete photometric overview of this variable. 
New entries since our CVC No.4 summary are indicated with an '*'. 
 
--------------------------------------------------------------------- 
DATE (UT)       MAGN  MS SEQ  OBSERVER         REMARKS         SOURCE 
--------------------------------------------------------------------- 
1994 04 19.132 [14.7  mv GSC  Vanmunster, T.   35-cm refl.     VVS 
1994 04 28.941  14.3: mv GSC  Vanmunster, T.   35-cm refl.     VVS 
1994 04 28.974  14.0  mv GSC  Van Cauteren, P. 40-cm refl.     VVS      
1994 04 30.920  14.0  mv GSC  Vanmunster, T.   35-cm refl.     VVS      
1994 04 30.995  13.8  mv GSC  Poyner, G.       40-cm refl.     Mail(poy)
1994 05 01.953  13.7  mv GSC  Vanmunster, T.   35-cm refl.     VVS      
1994 05 02.937  13.8  mv GSC  Vanmunster, T.   35-cm refl.     VVS    
1994 05 10.956  13.9  mv GSC  Vanmunster, T.   35-cm refl.     VVS     
1994 05 11.924  13.8  mv GSC  Vanmunster, T.   35-cm refl.     VVS  
1994 05 13.928 [14.1  mv GSC  Jensen, L.       33-cm refl.     Mail(las)
1994 05 14.019  14.1  mv GSC  Vanmunster, T.   35-cm refl.     VVS 
1994 05 15.913  13.8  mv GSC  Vanmunster, T.   35-cm refl.     VVS  
1994 05 17.997  14.3  mv GSC  Vanmunster, T.   35-cm refl.     VVS  
1994 05 20.051 [13.9  mv GSC  Vanmunster, T.   35-cm refl.     VVS  
1994 05 28.971 [13.9  mv GSC *Jensen, L.       33-cm refl.     Mail(las)
1994 05 29.931  14.1  mv GSC  Vanmunster, T.   35-cm refl.     VVS  
1994 05 31.016  14.4  mv GSC *Poyner, G.       40-cm refl.     varstars 
1994 06 04.995  14.6  mv GSC *Poyner, G.       20-cm refl.     Mail(poy)
1994 06 05.990  14.7: mv GSC *Vanmunster, T.   35-cm refl.     VVS  
 
 
V1504 Cyg [UGSU, 13.5p - 17.7p] 
=============================== 
 
This SU UMa-type dwarf nova, which is part of an observation programme  
from the VSOLJ (Japan), recently was in outburst, as indicated by the 
observations below. 
 
1994 May 30.956 UT, [13.9 (T. Vanmunster, 0.35-m refl., Seq: GSC);  
     May 31.962 UT,  14.2 (T. Vanmunster); 
     Jun 01.636 UT,  15.2 (C. Kunjaya, Ouda Station, Kyoto University, 
                              Japan, V-band CCD image, Seq: GSC); 
     Jun 03.038 UT, [14.5 (T. Vanmunster); 
     Jun 05.985 UT, [14.5 (T. Vanmunster); 
 
The faintness of the maximum and the rapid decline suggest that the  
present outburst was a normal one. V1504 Cyg was last seen in outburst  
in October 1991 (mag 14.4, Moriyama), according to our records. 
 
 
Tonny Vanmunster