Date: Wed, 24 Mar 1993 22:04:34 +0100 From: granslo@argo.uio.no Subject: Variable Stars (Report of 1993 Mar 24) Norwegian Astronomical Society - Variable Star Section *** VARIABLE STAR OBSERVATIONS - REPORT OF 1993 MARCH 24 *** This report contains visual observations on eruptive and cataclysmic variables since 1993 March 14. Time system is Universal Time. Observer: B. H. Granslo, Fjellhamar, Norway (20.3-cm SCT, Binoculars 7x35); O. Midtskogen, Svenskerud 127, N-3408 Tranby. 1. NOVAE AND RECURRENT NOVAE ---------------------------------------------------------------------------- Variable Date UT Magn Obs Date UT Magn Obs Date UT Magn Obs ---------------------------------------------------------------------------- T CrB Mar 17.01 10.3 GRL Mar 17.95 10.2 GRL Mar 18.95 10.3 GRL T CrB Mar 20.14 10.3 GRL Mar 22.00 10.2 GRL Mar 23.94 10.2 GRL Near minimum, but slightly brighter than in February. V1974 Cyg Mar 17.016 11.1 GRL Mar 17.961 11.0 GRL Mar 19.055 11.0 GRL V1974 Cyg Mar 20.063 11.2 GRL Mar 22.007 11.2 GRL Mar 23.953 11.2 GRL Fading slowly. V1974 Cygni = Nova Cygni 1992. RS Oph Mar 20.13 11.7 GRL Near minimum. GK Per Mar 17.93 13.1: GRL Near minimum. ---------------------------------------------------------------------------- 2. DWARF NOVAE ---------------------------------------------------------------------------- Variable Date UT Magn Obs Date UT Magn Obs Date UT Magn Obs ---------------------------------------------------------------------------- RX And Mar 22.03 11.8: GRL In outburst Mar 21/22? SS Aur Mar 17.00 <13.2 GRL Mar 17.94 <13.5: GRL Mar 20.06 <13.2 GRL SS Aur Mar 21.99 <13.5: GRL TT Boo Mar 17.99 <13.5: GRL Mar 20.15 <13.5: GRL Mar 22.00 <13.9 GRL TT Boo Mar 24.00 <13.5: GRL Z Cam Mar 2.05 11.6 GRL Mar 4.05 11.5 GRL Mar 9.97 11.5 GRL Z Cam Mar 17.00 11.5 GRL Mar 18.00 11.5 GRL Mar 18.95 11.4 GRL Z Cam Mar 20.06 11.4 GRL Mar 22.00 11.5 GRL Mar 23.95 11.6 GRL At standstill. SY Cnc Mar 17.98 11.9 GRL Mar 21.99 13.0 GRL Fading. YZ Cnc Mar 17.01 12.1 GRL Mar 17.98 12.9 GRL Mar 20.06 <13.0: GRL YZ Cnc Mar 21.99 <13.6 GRL Normal outburst Mar 16/17 and Mar 17/18. SS Cyg Mar 17.01 8.5 GRL Mar 18.95 8.9 GRL Mar 20.10 9.1 GRL SS Cyg Mar 22.01 9.8 GRL Mar 23.94 10.6 GRL Fading. EM Cyg Mar 19.06 12.6 GRL Mar 20.10 12.6 GRL Mar 22.05 13.0 GRL In outburst Mar 18/19 to Mar 21/22. EY Cyg Mar 20.10 <13.5: GRL Mar 22.05 <13.5: GRL AB Dra Mar 17.99 <13.4 GRL Mar 20.06 <13.4 GRL Mar 22.00 12.6 GRL AB Dra Mar 23.94 12.8 GRL In outburst Mar 21/22 and Mar 23/24. U Gem Mar 17.01 <13.0: GRL Mar 17.98 <13.5: GRL Mar 19.905 9.3 GRL U Gem Mar 20.053 9.2 GRL Mar 21.976 9.1 GRL Mar 23.933 9.2 GRL In outburst from Mar 19/20. First maximum for nearly seven months. IR Gem Mar 22.02 <13.2 GRL AH Her Mar 17.01 11.1 GRL Mar 17.96 11.0 GRL Mar 19.05 11.4 GRL AH Her Mar 20.14 11.7 GRL Mar 22.00 11.9 GRL Mar 23.98 13.0 GRL Bright outburst from Mar 16/17. X Leo Mar 17.01 <13.0: GRL Mar 17.99 <13.5 GRL Mar 21.95 <13.5 GRL X Leo Mar 24.00 <13.0: GRL TZ Per Mar 17.94 13.2 GRL Mar 20.13 13.4 GRL Mar 22.02 13.3 GRL At standstill? UV Per Mar 17.94 <13.5 GRL Mar 20.13 <13.7 GRL Mar 22.02 <13.5 GRL KT Per Mar 20.13 <13.2 GRL Mar 22.03 12.3 GRL In outburst Mar 21/22, SU UMa Mar 17.00 <13.4 GRL Mar 17.99 <13.6: GRL Mar 20.056 13.1 GRL SU UMa Mar 22.00 13.8 GRL Mar 23.98 <13.2 GRL Normal outburst on Mar 19/20. SW UMa Mar 17.01 <13.5 GRL Mar 17.99 <13.5 GRL Mar 20.06 <13.5 GRL SW UMa Mar 22.00 <13.5 GRL Mar 23.98 <13.5 GRL CH UMa Mar 14.81 13.4 MOK Mar 14.96 12.8 MOK Mar 17.00 <13.5: GRL CH UMa Mar 17.99 <13.5: GRL Mar 20.06 <13.5: GRL Mar 22.00 <13.7 GRL Short and faint outburst on Mar 14/15, confirmed by G. Hurst on Mar 15/16. ---------------------------------------------------------------------------- 3. OTHER CATACLYSMIC AND ERUPTIVE VARIABLES ---------------------------------------------------------------------------- Variable Date UT Magn Obs Date UT Magn Obs Date UT Magn Obs ---------------------------------------------------------------------------- Z And Mar 20.10 10.8 GRL Mar 22.02 10.8 GRL RW Aur Mar 17.94 10.5 GRL Mar 22.01 10.5 GRL TX CVn Mar 17.03 9.9 GRL Mar 19.07 9.9 GRL Mar 22.00 9.9 GRL TX CVn Mar 23.94 9.9 GRL UV Cas Mar 17.06 10.7 GRL Mar 20.10 10.8 GRL Mar 22.02 10.8 GRL TAV Cas Mar 17.06 10.7 GRL Mar 20.11 10.7 GRL Mar 22.02 10.7 GRL R CrB Mar 17.07 5.7 GRL Mar 19.07 5.8 GRL Mar 21.99 5.8 GRL R CrB Mar 23.94 5.8 GRL BF Cyg Mar 19.06 12.0 GRL Mar 22.05 12.1 GRL CH Cyg Mar 19.06 8.4 GRL Mar 22.05 8.4 GRL Mar 23.95 8.3 GRL CI Cyg Mar 19.06 10.8 GRL Mar 22.05 10.8 GRL V482 Cyg Mar 19.06 11.1 GRL Mar 22.05 11.1 GRL V1016 Cyg Mar 19.06 10.3 GRL Mar 22.05 10.3 GRL V1057 Cyg Mar 19.06 12.2 GRL Mar 22.05 12.4 GRL AG Dra Mar 17.04 9.9 GRL Mar 22.00 9.9 GRL Mar 23.94 9.9 GRL AX Per Mar 17.06 11.7 GRL Mar 20.13 11.7 GRL Mar 22.03 11.7 GRL AG Peg Mar 20.16 8.7 GRL V Sge Mar 20.14 10.2 GRL FG Sge Mar 20.11 12.0 GRL RR Tau Mar 17.94 10.7 GRL Mar 22.01 10.6 GRL SU Tau Mar 17.01 9.9 GRL Mar 17.94 9.9 GRL ----------------------------------------------------------------------------- Kind regards, Bjorn H. Granslo
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