Dear All, I can also confirm Rudolfs results. Our reduced data shows constant 0.8 magnitude/day decline. Detailed observation data follows. The table shows time in UTC, differental R magnitude (ref. GSC 3811:976) and the error of magnitude: UMABZ 20000513.89824 0.080 0.010 Nyr UMABZ 20000513.89910 0.076 0.011 Nyr UMABZ 20000513.89994 0.090 0.010 Nyr UMABZ 20000513.90080 0.079 0.010 Nyr UMABZ 20000513.90166 0.083 0.009 Nyr UMABZ 20000513.90251 0.077 0.010 Nyr UMABZ 20000513.90336 0.078 0.010 Nyr UMABZ 20000513.90422 0.060 0.010 Nyr UMABZ 20000513.90508 0.070 0.010 Nyr UMABZ 20000513.90593 0.064 0.010 Nyr UMABZ 20000513.90679 0.072 0.010 Nyr UMABZ 20000513.90771 0.089 0.010 Nyr UMABZ 20000513.90856 0.064 0.010 Nyr UMABZ 20000513.90942 0.081 0.010 Nyr UMABZ 20000513.91027 0.084 0.010 Nyr UMABZ 20000513.91111 0.076 0.010 Nyr UMABZ 20000513.91199 0.079 0.010 Nyr UMABZ 20000513.91289 0.087 0.009 Nyr UMABZ 20000513.91375 0.080 0.010 Nyr UMABZ 20000513.91459 0.081 0.011 Nyr UMABZ 20000513.91544 0.093 0.010 Nyr UMABZ 20000513.91630 0.088 0.010 Nyr UMABZ 20000513.91716 0.084 0.009 Nyr UMABZ 20000513.91800 0.081 0.010 Nyr UMABZ 20000513.91884 0.087 0.010 Nyr UMABZ 20000513.91970 0.077 0.009 Nyr UMABZ 20000513.92058 0.081 0.010 Nyr UMABZ 20000513.92144 0.090 0.009 Nyr UMABZ 20000513.92229 0.102 0.009 Nyr UMABZ 20000513.92314 0.094 0.010 Nyr UMABZ 20000513.92400 0.084 0.010 Nyr UMABZ 20000513.92485 0.090 0.010 Nyr UMABZ 20000513.92571 0.108 0.009 Nyr UMABZ 20000513.92657 0.094 0.009 Nyr UMABZ 20000513.92742 0.097 0.009 Nyr UMABZ 20000513.92828 0.105 0.009 Nyr UMABZ 20000513.92912 0.094 0.010 Nyr UMABZ 20000513.93000 0.081 0.010 Nyr UMABZ 20000513.93086 0.102 0.009 Nyr UMABZ 20000513.93171 0.106 0.010 Nyr UMABZ 20000513.93256 0.107 0.009 Nyr UMABZ 20000513.93341 0.114 0.010 Nyr UMABZ 20000513.93427 0.094 0.010 Nyr UMABZ 20000513.93519 0.096 0.010 Nyr UMABZ 20000513.93603 0.097 0.010 Nyr UMABZ 20000513.93690 0.091 0.010 Nyr UMABZ 20000513.93774 0.106 0.010 Nyr UMABZ 20000513.93859 0.100 0.010 Nyr UMABZ 20000513.93940 0.102 0.010 Nyr UMABZ 20000513.94029 0.098 0.010 Nyr UMABZ 20000513.94115 0.113 0.010 Nyr UMABZ 20000513.94199 0.123 0.010 Nyr UMABZ 20000513.94285 0.111 0.010 Nyr UMABZ 20000513.94370 0.124 0.011 Nyr UMABZ 20000513.94456 0.125 0.011 Nyr UMABZ 20000513.94542 0.124 0.010 Nyr UMABZ 20000513.94626 0.108 0.010 Nyr UMABZ 20000513.94711 0.114 0.009 Nyr UMABZ 20000513.94797 0.111 0.010 Nyr UMABZ 20000513.94882 0.116 0.011 Nyr UMABZ 20000513.94968 0.142 0.011 Nyr UMABZ 20000513.95053 0.121 0.011 Nyr UMABZ 20000513.95137 0.112 0.010 Nyr UMABZ 20000513.95223 0.111 0.011 Nyr UMABZ 20000513.95309 0.104 0.012 Nyr UMABZ 20000513.95394 0.127 0.011 Nyr UMABZ 20000513.95480 0.108 0.012 Nyr UMABZ 20000513.95565 0.105 0.011 Nyr UMABZ 20000513.95650 0.126 0.012 Nyr UMABZ 20000513.95735 0.111 0.012 Nyr UMABZ 20000513.95822 0.130 0.011 Nyr UMABZ 20000513.95910 0.111 0.012 Nyr UMABZ 20000513.95995 0.127 0.013 Nyr UMABZ 20000513.96081 0.116 0.013 Nyr UMABZ 20000513.96167 0.115 0.013 Nyr UMABZ 20000513.96253 0.118 0.013 Nyr UMABZ 20000513.96337 0.116 0.013 Nyr UMABZ 20000513.96421 0.124 0.013 Nyr UMABZ 20000513.96507 0.131 0.013 Nyr UMABZ 20000513.96594 0.122 0.014 Nyr UMABZ 20000513.96679 0.116 0.013 Nyr UMABZ 20000513.96765 0.144 0.015 Nyr UMABZ 20000513.96850 0.144 0.015 Nyr UMABZ 20000513.96939 0.147 0.014 Nyr UMABZ 20000513.97022 0.127 0.015 Nyr UMABZ 20000513.97106 0.113 0.015 Nyr UMABZ 20000513.97192 0.124 0.015 Nyr UMABZ 20000513.97278 0.127 0.015 Nyr UMABZ 20000513.97365 0.120 0.017 Nyr UMABZ 20000513.97449 0.127 0.017 Nyr UMABZ 20000513.97534 0.101 0.019 Nyr UMABZ 20000513.97620 0.126 0.017 Nyr UMABZ 20000513.97706 0.137 0.019 Nyr UMABZ 20000513.97791 0.139 0.019 Nyr UMABZ 20000513.97876 0.090 0.019 Nyr UMABZ 20000513.97962 0.121 0.020 Nyr UMABZ 20000513.98046 0.135 0.022 Nyr UMABZ 20000513.98133 0.145 0.022 Nyr UMABZ 20000513.98219 0.155 0.021 Nyr UMABZ 20000513.98303 0.163 0.023 Nyr UMABZ 20000513.98389 0.150 0.020 Nyr UMABZ 20000513.98473 0.166 0.023 Nyr UMABZ 20000513.98559 0.143 0.024 Nyr UMABZ 20000513.98645 0.156 0.025 Nyr best regards, arto -- Arto Oksanen mailto:arto.oksanen@jklsirius.fi Jyvaskylan Sirius ry, Kyllikinkatu 1, FIN-40100 JyvçÔkyl Finland Tel. +358-14-4157852, Mobile: +358-40-5659438, Fax: +358-14-4157803 Nyrola Observatory http://vsnet.ursa.fi/sirius/nytt/nytt_info.html