# Measurements of HS 2331+3905 made at RIT Obs, Sep 24, 2007 UT, # made by Michael Richmond. # All data taken with 12-inch LX-200 + no filter + SBIG ST-8 CCD # no focal reducer, so at native f/10 # Each exposure 10 seconds long; tabulated times are midexposure # and accurate only to +/- 1 second. # 'mag' is a differential magnitude based on ensemble photometry # which has been shifted so TYC 3231-533-1 mag=10.900 # to match value from AAVSO Alert Notice 357. # # UT day JD-2,450,000 HJD-2,450,000 mag uncert Sep23.99509 4367.49509 4367.49955 13.130 0.019 Sep23.99541 4367.49541 4367.49987 13.104 0.019 Sep23.99572 4367.49572 4367.50018 13.173 0.020 Sep23.99603 4367.49603 4367.50049 13.168 0.020 Sep23.99637 4367.49637 4367.50083 13.098 0.019 Sep23.99668 4367.49668 4367.50114 13.102 0.019 Sep23.99699 4367.49699 4367.50145 13.065 0.018 Sep23.99730 4367.49730 4367.50176 13.120 0.019 Sep23.99762 4367.49762 4367.50208 13.087 0.018 Sep23.99793 4367.49793 4367.50239 13.127 0.019 Sep23.99824 4367.49824 4367.50270 13.062 0.018 Sep23.99858 4367.49858 4367.50304 13.043 0.018 Sep23.99891 4367.49891 4367.50337 13.038 0.018 Sep23.99921 4367.49921 4367.50367 13.082 0.018 Sep23.99953 4367.49953 4367.50399 13.102 0.019 Sep23.99983 4367.49983 4367.50429 13.077 0.018 Sep24.00013 4367.50013 4367.50459 13.075 0.018 Sep24.00045 4367.50045 4367.50491 13.119 0.019 Sep24.00075 4367.50075 4367.50521 13.088 0.018 Sep24.00109 4367.50109 4367.50555 13.070 0.018 Sep24.00141 4367.50141 4367.50587 13.091 0.018 Sep24.00171 4367.50171 4367.50617 13.114 0.019 Sep24.00205 4367.50205 4367.50651 13.079 0.018 Sep24.00235 4367.50235 4367.50681 13.099 0.019 Sep24.00267 4367.50267 4367.50713 13.090 0.018 Sep24.00300 4367.50300 4367.50746 13.102 0.019 Sep24.00332 4367.50332 4367.50778 13.071 0.018 Sep24.00365 4367.50365 4367.50811 13.099 0.019 Sep24.00397 4367.50397 4367.50843 13.132 0.019 Sep24.00429 4367.50429 4367.50875 13.149 0.020 Sep24.00459 4367.50459 4367.50905 13.111 0.019 Sep24.00492 4367.50492 4367.50938 13.084 0.018 Sep24.00523 4367.50523 4367.50969 13.113 0.019 Sep24.00556 4367.50556 4367.51002 13.120 0.019 Sep24.00588 4367.50588 4367.51034 13.104 0.019 Sep24.00622 4367.50622 4367.51068 13.121 0.019 Sep24.00653 4367.50653 4367.51099 13.094 0.018 Sep24.00684 4367.50684 4367.51130 13.123 0.019 Sep24.00718 4367.50718 4367.51164 13.129 0.019 Sep24.00749 4367.50749 4367.51195 13.179 0.021 Sep24.00779 4367.50779 4367.51225 13.104 0.019 Sep24.00810 4367.50810 4367.51256 13.125 0.019 Sep24.00841 4367.50841 4367.51287 13.170 0.020 Sep24.00873 4367.50873 4367.51319 13.175 0.021 Sep24.00904 4367.50904 4367.51350 13.152 0.020 Sep24.00935 4367.50935 4367.51381 13.150 0.020 Sep24.00966 4367.50966 4367.51412 13.151 0.020 Sep24.00998 4367.50998 4367.51444 13.178 0.021 Sep24.01029 4367.51029 4367.51475 13.149 0.020 Sep24.01060 4367.51060 4367.51506 13.193 0.021 Sep24.01091 4367.51091 4367.51537 13.126 0.019 Sep24.01123 4367.51123 4367.51569 13.140 0.019 Sep24.01155 4367.51155 4367.51601 13.134 0.019 Sep24.01189 4367.51189 4367.51635 13.070 0.018 Sep24.01221 4367.51221 4367.51667 13.081 0.018 Sep24.01252 4367.51252 4367.51698 13.130 0.019 Sep24.01286 4367.51286 4367.51732 13.124 0.019 Sep24.01316 4367.51316 4367.51762 13.095 0.018 Sep24.01346 4367.51346 4367.51792 13.108 0.019 Sep24.01378 4367.51378 4367.51824 13.045 0.018 Sep24.01409 4367.51409 4367.51855 13.068 0.018 Sep24.01439 4367.51439 4367.51885 13.019 0.018 Sep24.01469 4367.51469 4367.51915 13.019 0.018 Sep24.01499 4367.51499 4367.51945 13.013 0.018 Sep24.01529 4367.51529 4367.51975 13.004 0.018 Sep24.01559 4367.51559 4367.52005 13.028 0.018 Sep24.01591 4367.51591 4367.52037 12.994 0.018 Sep24.01625 4367.51625 4367.52071 12.964 0.017 Sep24.01655 4367.51655 4367.52101 12.994 0.018 Sep24.01685 4367.51685 4367.52131 12.957 0.017 Sep24.01715 4367.51715 4367.52161 12.972 0.017 Sep24.01745 4367.51745 4367.52191 12.938 0.016 Sep24.01775 4367.51775 4367.52221 12.926 0.016 Sep24.01809 4367.51809 4367.52255 12.888 0.016 Sep24.01843 4367.51843 4367.52289 12.888 0.016 Sep24.01873 4367.51873 4367.52319 12.875 0.016 Sep24.01903 4367.51903 4367.52349 12.937 0.016 Sep24.01933 4367.51933 4367.52379 12.880 0.016 Sep24.01965 4367.51965 4367.52411 12.894 0.016 Sep24.01995 4367.51995 4367.52441 12.838 0.015 Sep24.02025 4367.52025 4367.52471 12.834 0.015 Sep24.02056 4367.52056 4367.52502 12.856 0.015 Sep24.02087 4367.52087 4367.52533 12.834 0.015 Sep24.02119 4367.52119 4367.52565 12.847 0.015 Sep24.02150 4367.52150 4367.52596 12.822 0.015 Sep24.02183 4367.52183 4367.52629 12.805 0.013 Sep24.02213 4367.52213 4367.52659 12.831 0.015 Sep24.02244 4367.52244 4367.52690 12.778 0.013 Sep24.02277 4367.52277 4367.52723 12.792 0.013 Sep24.02307 4367.52307 4367.52753 12.767 0.013 Sep24.02340 4367.52340 4367.52786 12.752 0.013 Sep24.02370 4367.52370 4367.52816 12.766 0.013 Sep24.02404 4367.52404 4367.52850 12.798 0.013 Sep24.02434 4367.52434 4367.52880 12.762 0.013 Sep24.02465 4367.52465 4367.52911 12.808 0.013 Sep24.02528 4367.52528 4367.52974 12.773 0.013 Sep24.02559 4367.52559 4367.53005 12.804 0.013 Sep24.02589 4367.52589 4367.53035 12.804 0.013 Sep24.02623 4367.52623 4367.53069 12.763 0.013 Sep24.02654 4367.52654 4367.53100 12.792 0.013 Sep24.02685 4367.52685 4367.53131 12.824 0.015 Sep24.02716 4367.52716 4367.53162 12.857 0.015 Sep24.02747 4367.52747 4367.53193 12.854 0.015 Sep24.02778 4367.52778 4367.53224 12.845 0.015 Sep24.02808 4367.52808 4367.53254 12.854 0.015 Sep24.02839 4367.52839 4367.53285 12.851 0.015 Sep24.02870 4367.52870 4367.53316 12.840 0.015 Sep24.02902 4367.52902 4367.53348 12.823 0.015 Sep24.02934 4367.52934 4367.53380 12.842 0.015 Sep24.02966 4367.52966 4367.53412 12.858 0.015 Sep24.02997 4367.52997 4367.53443 12.862 0.015 Sep24.03027 4367.53027 4367.53473 12.874 0.016 Sep24.03057 4367.53057 4367.53503 12.878 0.016 Sep24.03090 4367.53090 4367.53536 12.944 0.016 Sep24.03124 4367.53124 4367.53570 12.969 0.017 Sep24.03154 4367.53154 4367.53600 12.963 0.017 Sep24.03186 4367.53186 4367.53632 13.073 0.018 Sep24.03218 4367.53218 4367.53664 13.027 0.018 Sep24.03249 4367.53249 4367.53695 13.075 0.018 Sep24.03280 4367.53280 4367.53726 13.092 0.018 Sep24.03311 4367.53311 4367.53757 13.053 0.018 Sep24.03343 4367.53343 4367.53789 13.086 0.018 Sep24.03373 4367.53373 4367.53819 13.088 0.018 Sep24.03404 4367.53404 4367.53850 13.119 0.019 Sep24.03435 4367.53435 4367.53881 13.106 0.019 Sep24.03466 4367.53466 4367.53912 13.112 0.019 Sep24.03498 4367.53498 4367.53944 13.175 0.020 Sep24.03529 4367.53529 4367.53975 13.115 0.019 Sep24.03561 4367.53561 4367.54007 13.131 0.019 Sep24.03591 4367.53591 4367.54037 13.140 0.019 Sep24.03623 4367.53623 4367.54069 13.061 0.018 Sep24.03653 4367.53653 4367.54099 13.055 0.018 Sep24.03685 4367.53685 4367.54131 13.039 0.018 Sep24.03716 4367.53716 4367.54162 13.022 0.018 Sep24.03778 4367.53778 4367.54224 12.982 0.017 Sep24.03809 4367.53809 4367.54255 12.993 0.017 Sep24.03841 4367.53841 4367.54287 13.010 0.018 Sep24.03873 4367.53873 4367.54319 13.038 0.018 Sep24.03905 4367.53905 4367.54351 13.003 0.018 Sep24.03936 4367.53936 4367.54382 12.992 0.018 Sep24.03968 4367.53968 4367.54414 13.009 0.018 Sep24.03999 4367.53999 4367.54445 13.019 0.018 Sep24.04029 4367.54029 4367.54475 13.045 0.018 Sep24.04060 4367.54060 4367.54506 13.046 0.018 Sep24.04091 4367.54091 4367.54537 13.045 0.018 Sep24.04123 4367.54123 4367.54569 13.073 0.018 Sep24.04154 4367.54154 4367.54600 13.063 0.018 Sep24.04185 4367.54185 4367.54631 13.029 0.018 Sep24.04216 4367.54216 4367.54662 13.063 0.018 Sep24.04248 4367.54248 4367.54694 13.052 0.018 Sep24.04279 4367.54279 4367.54725 13.057 0.018 Sep24.04310 4367.54310 4367.54756 13.042 0.018 Sep24.04341 4367.54341 4367.54787 13.051 0.018 Sep24.04373 4367.54373 4367.54819 13.081 0.018 Sep24.04404 4367.54404 4367.54850 13.034 0.018 Sep24.04434 4367.54434 4367.54880 13.061 0.018 Sep24.04464 4367.54464 4367.54910 13.065 0.018 Sep24.04495 4367.54495 4367.54941 13.089 0.018 Sep24.04560 4367.54560 4367.55006 13.048 0.018 Sep24.04591 4367.54591 4367.55037 13.033 0.018 Sep24.04623 4367.54623 4367.55069 13.001 0.018 Sep24.04653 4367.54653 4367.55099 13.037 0.018 Sep24.04684 4367.54684 4367.55130 13.072 0.018 Sep24.04716 4367.54716 4367.55162 13.014 0.018 Sep24.04747 4367.54747 4367.55193 13.028 0.018 Sep24.04786 4367.54786 4367.55232 13.047 0.018 Sep24.04809 4367.54809 4367.55255 13.015 0.018 Sep24.04833 4367.54833 4367.55279 13.099 0.018 Sep24.04858 4367.54858 4367.55304 12.991 0.018 Sep24.04882 4367.54882 4367.55328 13.066 0.018 Sep24.04906 4367.54906 4367.55352 13.089 0.018 Sep24.04929 4367.54929 4367.55375 13.073 0.018 Sep24.04954 4367.54954 4367.55400 13.054 0.018 Sep24.04978 4367.54978 4367.55424 13.065 0.018 Sep24.05002 4367.55002 4367.55448 13.069 0.018 Sep24.05027 4367.55027 4367.55473 13.089 0.018 Sep24.05051 4367.55051 4367.55497 13.049 0.018 Sep24.05075 4367.55075 4367.55521 13.041 0.018 Sep24.05098 4367.55098 4367.55544 13.074 0.018 Sep24.05123 4367.55123 4367.55569 13.099 0.018 Sep24.05147 4367.55147 4367.55593 13.124 0.019 Sep24.05171 4367.55171 4367.55617 13.100 0.018 Sep24.05196 4367.55196 4367.55642 13.096 0.018 Sep24.05220 4367.55220 4367.55666 13.101 0.018 Sep24.05243 4367.55243 4367.55689 13.102 0.019 Sep24.05267 4367.55267 4367.55713 13.082 0.018 Sep24.05292 4367.55292 4367.55738 13.074 0.018 Sep24.05316 4367.55316 4367.55762 13.072 0.018 Sep24.05340 4367.55340 4367.55786 13.057 0.018 Sep24.05365 4367.55365 4367.55811 13.051 0.018 Sep24.05388 4367.55388 4367.55834 13.060 0.018 Sep24.05412 4367.55412 4367.55858 13.094 0.018 Sep24.05436 4367.55436 4367.55882 13.137 0.019 Sep24.05461 4367.55461 4367.55907 13.117 0.019 Sep24.05485 4367.55485 4367.55931 13.126 0.019 Sep24.05509 4367.55509 4367.55955 13.137 0.019 Sep24.05534 4367.55534 4367.55980 13.132 0.019 Sep24.05557 4367.55557 4367.56003 13.100 0.019 Sep24.05581 4367.55581 4367.56027 13.090 0.018 Sep24.05605 4367.55605 4367.56051 13.115 0.019 Sep24.05630 4367.55630 4367.56076 13.126 0.019 Sep24.05654 4367.55654 4367.56100 13.127 0.019 Sep24.05678 4367.55678 4367.56124 13.120 0.019 Sep24.05703 4367.55703 4367.56149 13.114 0.019 Sep24.05726 4367.55726 4367.56172 13.080 0.018 Sep24.05750 4367.55750 4367.56196 13.098 0.018 Sep24.05774 4367.55774 4367.56220 13.102 0.019 Sep24.05799 4367.55799 4367.56245 13.126 0.019 Sep24.05823 4367.55823 4367.56269 13.117 0.019 Sep24.05847 4367.55847 4367.56293 13.151 0.020 Sep24.05872 4367.55872 4367.56318 13.149 0.020 Sep24.05895 4367.55895 4367.56341 13.125 0.019 Sep24.05919 4367.55919 4367.56365 13.165 0.020 Sep24.05943 4367.55943 4367.56389 13.150 0.020 Sep24.05968 4367.55968 4367.56414 13.116 0.019 Sep24.05992 4367.55992 4367.56438 13.141 0.019 Sep24.06016 4367.56016 4367.56462 13.157 0.020 Sep24.06039 4367.56039 4367.56485 13.107 0.019 Sep24.06064 4367.56064 4367.56510 13.132 0.019 Sep24.06088 4367.56088 4367.56534 13.149 0.020 Sep24.06112 4367.56112 4367.56558 13.184 0.021 Sep24.06137 4367.56137 4367.56583 13.174 0.020 Sep24.06161 4367.56161 4367.56607 13.192 0.021 Sep24.06184 4367.56184 4367.56630 13.180 0.021 Sep24.06208 4367.56208 4367.56654 13.183 0.021 Sep24.06233 4367.56233 4367.56679 13.162 0.020 Sep24.06257 4367.56257 4367.56703 13.145 0.020 Sep24.06281 4367.56281 4367.56727 13.159 0.020 Sep24.06306 4367.56306 4367.56752 13.141 0.019 Sep24.06330 4367.56330 4367.56776 13.148 0.020 Sep24.06353 4367.56353 4367.56799 13.137 0.019 Sep24.06377 4367.56377 4367.56823 13.171 0.020 Sep24.06402 4367.56402 4367.56848 13.196 0.021 Sep24.06426 4367.56426 4367.56872 13.172 0.020 Sep24.06450 4367.56450 4367.56896 13.194 0.021 Sep24.06475 4367.56475 4367.56921 13.171 0.020 Sep24.06498 4367.56498 4367.56944 13.197 0.021 Sep24.06522 4367.56522 4367.56968 13.119 0.019 Sep24.06546 4367.56546 4367.56992 13.169 0.020 Sep24.06571 4367.56571 4367.57017 13.167 0.020 Sep24.06595 4367.56595 4367.57041 13.165 0.020 Sep24.06619 4367.56619 4367.57065 13.136 0.019 Sep24.06644 4367.56644 4367.57090 13.147 0.020 Sep24.06667 4367.56667 4367.57113 13.130 0.019 Sep24.06691 4367.56691 4367.57137 13.146 0.020 Sep24.06715 4367.56715 4367.57161 13.107 0.019 Sep24.06740 4367.56740 4367.57186 13.055 0.018 Sep24.06764 4367.56764 4367.57210 13.079 0.018 Sep24.06788 4367.56788 4367.57234 13.095 0.018 Sep24.06811 4367.56811 4367.57257 13.082 0.018 Sep24.06836 4367.56836 4367.57282 13.061 0.018 Sep24.06860 4367.56860 4367.57306 13.077 0.018 Sep24.06884 4367.56884 4367.57330 13.096 0.018 Sep24.06909 4367.56909 4367.57355 13.063 0.018 Sep24.06932 4367.56932 4367.57378 13.061 0.018 Sep24.06956 4367.56956 4367.57402 13.030 0.018 Sep24.06980 4367.56980 4367.57426 13.029 0.018 Sep24.07005 4367.57005 4367.57451 13.027 0.018 Sep24.07029 4367.57029 4367.57475 12.978 0.017 Sep24.07053 4367.57053 4367.57499 12.968 0.017 Sep24.07078 4367.57078 4367.57524 12.991 0.017 Sep24.07101 4367.57101 4367.57547 12.999 0.018 Sep24.07125 4367.57125 4367.57571 12.962 0.017 Sep24.07149 4367.57149 4367.57595 12.958 0.017 Sep24.07174 4367.57174 4367.57620 12.964 0.017 Sep24.07198 4367.57198 4367.57644 12.965 0.017 Sep24.07222 4367.57222 4367.57668 12.940 0.016 Sep24.07247 4367.57247 4367.57693 12.965 0.017 Sep24.07270 4367.57270 4367.57716 12.927 0.016 Sep24.07295 4367.57295 4367.57741 12.966 0.017 Sep24.07319 4367.57319 4367.57765 12.936 0.016 Sep24.07344 4367.57344 4367.57790 12.985 0.017 Sep24.07367 4367.57367 4367.57813 12.947 0.016 Sep24.07391 4367.57391 4367.57837 12.935 0.016 Sep24.07416 4367.57416 4367.57862 12.956 0.017 Sep24.07440 4367.57440 4367.57886 12.963 0.017 Sep24.07464 4367.57464 4367.57910 12.939 0.016 Sep24.07488 4367.57488 4367.57934 12.941 0.016 Sep24.07513 4367.57513 4367.57959 12.878 0.016 Sep24.07536 4367.57536 4367.57982 12.875 0.016 Sep24.07560 4367.57560 4367.58006 12.903 0.016 Sep24.07584 4367.57584 4367.58030 12.915 0.016 Sep24.07609 4367.57609 4367.58055 12.893 0.016 Sep24.07633 4367.57633 4367.58079 12.883 0.016 Sep24.07657 4367.57657 4367.58103 12.861 0.015 Sep24.07681 4367.57681 4367.58127 12.874 0.016 Sep24.07705 4367.57705 4367.58151 12.862 0.015 Sep24.07729 4367.57729 4367.58175 12.870 0.015 Sep24.07753 4367.57753 4367.58199 12.868 0.016 Sep24.07778 4367.57778 4367.58224 12.858 0.015 Sep24.07802 4367.57802 4367.58248 12.877 0.016 Sep24.07826 4367.57826 4367.58272 12.839 0.015 Sep24.07850 4367.57850 4367.58296 12.837 0.015 Sep24.07874 4367.57874 4367.58320 12.834 0.015 Sep24.07898 4367.57898 4367.58344 12.784 0.013 Sep24.07922 4367.57922 4367.58368 12.837 0.015 Sep24.07947 4367.57947 4367.58393 12.825 0.015 Sep24.07971 4367.57971 4367.58417 12.808 0.013 Sep24.07995 4367.57995 4367.58441 12.789 0.013 Sep24.08019 4367.58019 4367.58465 12.790 0.013 Sep24.08043 4367.58043 4367.58489 12.816 0.014 Sep24.08067 4367.58067 4367.58513 12.877 0.016 Sep24.08091 4367.58091 4367.58537 12.902 0.016 Sep24.08116 4367.58116 4367.58562 12.871 0.016 Sep24.08140 4367.58140 4367.58586 12.833 0.015 Sep24.08166 4367.58166 4367.58612 12.847 0.015 Sep24.08190 4367.58190 4367.58636 12.859 0.015 Sep24.08213 4367.58213 4367.58659 12.845 0.015 Sep24.08237 4367.58237 4367.58683 12.851 0.015 Sep24.08262 4367.58262 4367.58708 12.849 0.015 Sep24.08286 4367.58286 4367.58732 12.841 0.015 Sep24.08310 4367.58310 4367.58756 12.797 0.013 Sep24.08334 4367.58334 4367.58780 12.800 0.013 Sep24.08359 4367.58359 4367.58805 12.831 0.015 Sep24.08383 4367.58383 4367.58829 12.808 0.013 Sep24.08407 4367.58407 4367.58853 12.824 0.015 Sep24.08432 4367.58432 4367.58878 12.827 0.015 Sep24.08456 4367.58456 4367.58902 12.854 0.015 Sep24.08480 4367.58480 4367.58926 12.888 0.016 Sep24.08503 4367.58503 4367.58949 12.891 0.016 Sep24.08528 4367.58528 4367.58974 12.844 0.015 Sep24.08552 4367.58552 4367.58998 12.855 0.015 Sep24.08576 4367.58576 4367.59022 12.874 0.016 Sep24.08601 4367.58601 4367.59047 12.926 0.016 Sep24.08625 4367.58625 4367.59071 12.868 0.015 Sep24.08649 4367.58649 4367.59095 12.883 0.016 Sep24.08672 4367.58672 4367.59118 12.874 0.016 Sep24.08697 4367.58697 4367.59143 12.903 0.016 Sep24.08721 4367.58721 4367.59167 12.918 0.016 Sep24.08745 4367.58745 4367.59191 12.942 0.016 Sep24.08770 4367.58770 4367.59216 12.972 0.017 Sep24.08794 4367.58794 4367.59240 12.969 0.017 Sep24.08817 4367.58817 4367.59263 12.975 0.017 Sep24.08841 4367.58841 4367.59287 12.994 0.018