BELGIAN ASTRONOMICAL SOCIETY V.V.S. - Working Group Variable Stars Cataclysmic Variables Circular No.19 1994, October 17 Ed.: T. Vanmunster, Walhostraat 1A, 3401 Landen, BELGIUM Internet: tvm@lms.be TEL. 32-11-831504 P. Van Cauteren, de Borrekenslaan 54, 2630 Aartselaar, BELGIUM 73064.1123@compuserve.COM TEL. 32-3-8774098 =================================================================== KW And [UG, 14.8p - 22p] ======================== We have been informed by Yasuto Takenaka, Variable Star Observers League of Japan, of an outburst detection of this little studied dwarf nova, by M. Iida, Nagano, Japan. 1994 Oct 14.557 UT, 15.4 (M. Iida, 0.16-m refl.+ST-6 CCD unfilt.,seq: GSC); Oct 14.626 UT, [13.3 (S. Takahasi, Shiga, Japan); Oct 15.511 UT, 15.3 (M. Iida); We have found no information on earlier outburst observations of KW And. OJ 287 Cnc [BL Lac, 12.7pg - 16.0pg] ==================================== We have been informed by Guy Hurst, Basingstoke, UK (The Astronomer Electronic Circular No. 890) that OJ 287 Cnc appears to be entering an outburst, following independent observations by M. Kidger, Tenerife and D. Strange, Worth Maltravers, UK. An independent outburst detection was also made by Tonny Vanmunster, Landen, Belgium. Available observations : 1994 Oct 05/06 , 14.28V (M. Kidger, Tenerife); Oct 08.111 UT, 14.6: (T. Vanmunster, 0.35-m refl., seq AAVSO); Oct 08.16 UT, 14.4: (D. Strange, 0.50-m refl.+unfilt. CCD); Oct 12.122 UT, 14.1 (T. Vanmunster); Oct 14.088 UT, 14.0 (T. Vanmunster); The previous "outburst" of this interesting object was detected photo- graphically on 1994 March 03, by N. James, UK, when it reached mag 14.5. FS Aur [UGZ:, 14.4v - 16.2v] ============================ Tonny Vanmunster, Landen, Belgium reports a possible outburst of this poorly studied dwarf nova type cataclysmic variable, which is on the Belgian Cataclysmic Variables Alert Programme (CVAP). Confirmative observations are highly encouraged. Although the UG classification of FS Aur is secure, its subclassification is still uncertain. Professional astronomers have asked us to closely monitor this object. 1994 Oct 10.094 UT, 15.0 (T. Vanmunster, 0.35-m refl., seq: GSC); Oct 12.112 UT, 15.2: (T. Vanmunster); Oct 15.081 UT, [14.5 (T. Vanmunster); According to our records, the object was last seen in outburst on 1994 February 16 when it reached mag. 14.6 (T. Vanmunster). On previous occasions, the object became as bright as mag. 13.4pg. BZ UMa [UG, 10.5v - 17.8v] ========================== The BZ UMa outburst, announced in CVC No.18, apparently was a normal one, as indicated by the list of observations below : ------------------------------------------------------------------------ DATE (UT) MAGN MS SEQ OBSERVER REMARKS SOURCE ------------------------------------------------------------------------ 1994 10 07.076 [13.9 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 07.967 11.4 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 07.976 11.3 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 07.979 11.3 mv TA Poyner, G. 40-cm refl. Mail(poy) 1994 10 07.999 11.3 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 08.037 11.2 mv AA Broens, E. 35-cm refl. VVS 1994 10 08.064 11.4 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 08.088 11.3 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 08.096 11.4 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 08.145 11.0 mv AA Pietz, J. 20-cm SCT Mail(pie) 1994 10 08.163 11.3 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 08.176 11.2 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 08.761 11.4: mv AA Pietz, J. 20-cm SCT Mail(pie) 1994 10 08.806 12.0: mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 09.001 11.6 mv AA Pietz, J. 20-cm SCT Mail(pie) 1994 10 09.103 11.8 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 09.136 11.8 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 09.820 12.7: mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 10.049 13.4 mv TA Poyner, G. 40-cm refl. Mail(poy) 1994 10 10.074 13.5 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 10.075 13.6 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 10.121 13.8 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 10.135 13.5 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 10.142 13.7 mv AA Jensen, L. ??-cm refl. Mail(jen) 1994 10 10.165 13.4 mv AA Broens, E. 35-cm refl. VVS 1994 10 10.17 13.6 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 10.944 [13.7 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 11.052 14.8 mv AA Broens, E. 35-cm refl. VVS 1994 10 11.155 14.0 mv AA Diepvens, A. 15-cm refr. VVS 1994 10 11.164 [13.9 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 12.072 [13.7 mv AA Schmeer, P. 20-cm SCT Mail(sch) 1994 10 12.090 [13.7 mv AA Vanmunster, T. 35-cm refl. VVS IR Lyr [Unknown Type, 14.6p - 16.0p] ==================================== Additional observations of this interesting variable are listed below. They supplement the photometric summary published in CVC No.18. ------------------------------------------------------------------------ DATE (UT) MAGN MS SEQ OBSERVER REMARKS SOURCE ------------------------------------------------------------------------ 1994 10 07.855 14.5 mv GSC Poyner, G. 40-cm refl. Mail(poy) 1994 10 09.817 14.5 mv GSC Vanmunster, T. 35-cm refl. VVS 1994 10 10.866 14.6: mv GSC Vanmunster, T. 35-cm refl. VVS 1994 10 13.789 14.6: mv GSC Poyner, G. 40-cm refl. Mail(poy) DX And [UG, 10.9p - 16.4p] ========================== The photometric summary below concludes our monitoring action of the current DX And outburst. ------------------------------------------------------------------------ DATE (UT) MAGN MS SEQ OBSERVER REMARKS SOURCE ------------------------------------------------------------------------ 1994 10 06.639 12.7 mv Watanabe, M. 28-cm SCT Mail(wat) 1994 10 06.867 12.8 mv AA Diepvens, A. 15-cm refr. VVS 1994 10 07.019 12.8 mv AA Poyner, G. 40-cm refl. Mail(poy) 1994 10 07.791 12.9 mv AA Diepvens, A. 15-cm refr. VVS 1994 10 07.887 12.9 mv AA Poyner, G. 40-cm refl. Mail(poy) 1994 10 08.039 13.2 mv AA Broens, E. 35-cm refl. VVS 1994 10 08.064 13.0 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 08.097 13.6 mv AA Pietz, J. 20-cm SCT Mail(pie) 1994 10 08.763 13.8 mv AA Pietz, J. 20-cm SCT Mail(pie) 1994 10 09.756 13.5: mv Westlund, M. 20-cm SCT Mail(wes) 1994 10 09.778 14.1 mv AA Pietz, J. 20-cm SCT Mail(pie) 1994 10 09.787 13.7 mv AA Diepvens, A. 15-cm refr. VVS 1994 10 09.825 13.4 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 09.846 13.9 mv AA Broens, E. 35-cm refl. VVS 1994 10 09.981 13.7 mv AA Poyner, G. 40-cm refl. Mail(poy) 1994 10 10.871 13.9 mv AA Diepvens, A. 15-cm refr. VVS 1994 10 10.879 14.4 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 11.010 14.0 mv AA Broens, E. 35-cm refl. VVS 1994 10 11.138 [14.0 mv AA Diepvens, A. 15-cm refr. VVS 1994 10 11.838 14.4 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 11.897 [14.2 mv AA Diepvens, A. 15-cm refr. VVS 1994 10 11.929 14.8: mv AA Broens, E. 35-cm refl. VVS 1994 10 13.988 14.3 mv AA Poyner, G. 40-cm refl. Mail(poy) 1994 10 14.033 14.6 mv AA Vanmunster, T. 35-cm refl. VVS 1994 10 14.565 [14.5 mv Takahasi, S. Mail(tak) 1994 10 15.076 [14.4 mv AA Vanmunster, T. 35-cm refl. VVS ERRATA IN CVC No.18 =================== Yasuto Takenaka, Kyoto, Japan informs us that the DX And observation of 1994 09 25.507 UT, published in CVC No.18, was made by himself and not by Mr. Takahashi, as was stated incorrectly. The entry in the table should become : 1994 09 25.507 12.1 mv AA *Takenaka, Y. 20-cm SCT Mail(tak) Tonny Vanmunster