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New variable star candidate from Greg Bolt We have received the following report of a new variable star candidate. The object is now known as a variable star to my knowledge. === While processing results for unfiltered time series photometry on a Minor Planet this week in Centaurus, I noticed a star in the field changing magnitude. The following night I followed up the same field with longer exposures. The amplitude is ~0.01 Mag, and the best period appears to be near 0.182 days. I have had a preliminary look at some catalogues, but am unable to match any variables. In my images it matches star GSC2.2===S1220111136 in both location and approximate magnitude, RA2000 = 11 41 37.5 DEC2000= -36 09 45.6 Are you able to assist by checking if this is a known variable star? I do not know if this is of interest or not...to me it certainly seems interesting. My apologies if I have simply found an already known object!! The data for both nights are below. regards, Greg ------------------------------------- JD V-C1 V-C2 C1-C2 2452702.08083 0.761 1.659 0.898 2452702.08233 0.731 1.593 0.862 2452702.08381 0.735 1.612 0.877 2452702.08529 0.751 1.628 0.877 2452702.08677 0.714 1.582 0.868 2452702.08826 0.728 1.609 0.881 2452702.08975 0.726 1.595 0.869 2452702.09124 0.740 1.593 0.853 2452702.09272 0.766 1.634 0.868 2452702.09420 0.689 1.565 0.876 2452702.09569 0.730 1.599 0.869 2452702.09718 0.731 1.593 0.862 2452702.09866 0.736 1.625 0.889 2452702.10015 0.725 1.584 0.859 2452702.10163 0.709 1.569 0.860 2452702.10311 0.715 1.602 0.887 2452702.10458 0.745 1.611 0.866 2452702.10609 0.696 1.560 0.864 2452702.10757 0.706 1.584 0.878 2452702.10906 0.709 1.566 0.857 2452702.11056 0.703 1.564 0.861 2452702.11203 0.707 1.561 0.854 2452702.11352 0.682 1.549 0.867 2452702.11500 0.688 1.556 0.868 2452702.11648 0.707 1.556 0.849 2452702.11797 0.720 1.584 0.864 2452702.11946 0.683 1.542 0.859 2452702.12094 0.719 1.598 0.879 2452702.12243 0.682 1.552 0.870 2452702.12391 0.686 1.562 0.876 2452702.12541 0.724 1.590 0.866 2452702.12689 0.724 1.592 0.868 2452702.12838 0.669 1.559 0.890 2452702.12986 0.711 1.574 0.863 2452702.13134 0.678 1.547 0.869 2452702.13284 0.699 1.579 0.880 2452702.13432 0.681 1.550 0.869 2452702.13581 0.687 1.564 0.877 2452702.13729 0.698 1.555 0.857 2452702.13878 0.677 1.543 0.866 2452702.14027 0.701 1.570 0.869 2452702.14176 0.701 1.565 0.864 2452702.14324 0.690 1.563 0.873 2452702.14473 0.709 1.580 0.871 2452702.14622 0.689 1.564 0.875 2452702.14771 0.723 1.589 0.866 2452702.14919 0.705 1.575 0.870 2452702.15068 0.705 1.568 0.863 2452702.15216 0.715 1.577 0.862 2452702.15365 0.703 1.561 0.858 2452702.15514 0.695 1.570 0.875 2452702.15662 0.707 1.580 0.873 2452702.15811 0.693 1.580 0.887 2452702.15959 0.724 1.594 0.870 2452702.16108 0.708 1.576 0.868 2452702.16257 0.679 1.559 0.880 2452702.16405 0.688 1.570 0.882 2452702.16553 0.725 1.583 0.858 2452702.16703 0.718 1.597 0.879 2452702.16851 0.718 1.589 0.871 2452702.16999 0.710 1.579 0.869 2452702.17148 0.744 1.616 0.872 2452702.17296 0.736 1.598 0.862 2452702.17444 0.720 1.596 0.876 2452702.17594 0.748 1.628 0.880 2452702.17742 0.767 1.622 0.855 2452702.17890 0.735 1.588 0.853 2452702.18039 0.729 1.611 0.882 2452702.18187 0.746 1.604 0.858 2452702.18336 0.742 1.629 0.887 2452702.18485 0.756 1.633 0.877 2452702.18633 0.742 1.617 0.875 2452702.18781 0.732 1.621 0.889 2452702.18931 0.730 1.610 0.880 2452702.19079 0.747 1.613 0.866 2452702.19228 0.762 1.632 0.870 2452702.19376 0.759 1.602 0.843 2452702.19525 0.767 1.619 0.852 2452702.19674 0.768 1.634 0.866 2452702.19822 0.764 1.642 0.878 2452702.19971 0.765 1.637 0.872 2452702.20119 0.749 1.632 0.883 2452702.20269 0.764 1.622 0.858 2452702.20417 0.797 1.664 0.867 2452702.20566 0.774 1.651 0.877 2452702.20714 0.757 1.639 0.882 2452702.20863 0.766 1.638 0.872 2452702.21012 0.759 1.650 0.891 2452702.21160 0.783 1.656 0.873 2452702.21309 0.753 1.648 0.895 2452702.21457 0.741 1.623 0.882 2452702.21605 0.805 1.664 0.859 2452702.21755 0.755 1.620 0.865 2452702.21903 0.762 1.635 0.873 2452702.22051 0.759 1.643 0.884 2452702.22200 0.751 1.627 0.876 2452702.22348 0.767 1.637 0.870 2452702.22497 0.767 1.626 0.859 2452702.22646 0.759 1.636 0.877 2452702.22794 0.764 1.660 0.896 2452702.22942 0.749 1.636 0.887 2452702.23091 0.775 1.647 0.872 2452702.23240 0.781 1.633 0.852 2452702.23388 0.742 1.619 0.877 2452702.23536 0.754 1.617 0.863 2452702.23685 0.767 1.638 0.871 2452702.23834 0.767 1.639 0.872 2452702.23983 0.769 1.643 0.874 2452702.24131 0.762 1.641 0.879 2452702.24279 0.752 1.638 0.886 2452702.24428 0.757 1.622 0.865 2452702.24578 0.740 1.607 0.867 2452702.24725 0.738 1.612 0.874 2452702.24875 0.762 1.642 0.880 2452702.25022 0.751 1.634 0.883 2452702.25172 0.728 1.616 0.888 2452702.25321 0.726 1.593 0.867 2452702.25468 0.741 1.625 0.884 2452702.25617 0.740 1.608 0.868 2452702.25765 0.715 1.581 0.866 2452702.25914 0.749 1.617 0.868 2452702.26064 0.737 1.581 0.844 2452702.26211 0.746 1.618 0.872 2452702.26360 0.690 1.572 0.882 2452702.26508 0.746 1.604 0.858 2452702.26659 0.723 1.592 0.869 2452702.26806 0.705 1.572 0.867 2452702.26954 0.693 1.584 0.891 2452702.27104 0.705 1.577 0.872 2452702.27252 0.695 1.559 0.864 2452702.27400 0.706 1.580 0.874 2452702.27550 0.699 1.570 0.871 2452702.27697 0.709 1.590 0.881 2452702.27846 0.685 1.561 0.876 2452702.27995 0.715 1.578 0.863 2452702.28145 0.719 1.576 0.857 2452702.28293 0.701 1.557 0.856 2452702.28441 0.692 1.581 0.889 2452702.28589 0.708 1.584 0.876 2452702.28738 0.682 1.551 0.869 2452702.28887 0.709 1.592 0.883 2452702.29036 0.635 1.537 0.902 2452702.29184 0.705 1.576 0.871 2452702.29332 0.667 1.545 0.878 2452702.29481 0.667 1.545 0.878 2452702.29630 0.693 1.563 0.870 2452702.29778 0.668 1.527 0.859 2452702.29927 0.700 1.566 0.866 2452702.30075 0.687 1.544 0.857 2452702.30222 0.673 1.541 0.868 2452702.30373 0.678 1.543 0.865 2452702.30521 0.667 1.535 0.868 2452702.30670 0.687 1.554 0.867 2452702.30818 0.685 1.548 0.863 2452702.30966 0.681 1.555 0.874 2452702.31116 0.647 1.516 0.869 2452702.31264 0.709 1.576 0.867 2452702.31412 0.657 1.540 0.883 2452702.31561 0.681 1.545 0.864 2452702.31709 0.660 1.515 0.855 2452702.31859 0.654 1.516 0.862 2452702.32007 0.690 1.547 0.857 2452702.32155 0.678 1.542 0.864 2452702.32304 0.673 1.541 0.868 2452702.32453 0.666 1.527 0.861 2452702.32601 0.681 1.553 0.872 2452702.32750 0.660 1.532 0.872 2452702.32898 0.662 1.531 0.869 2452702.33047 0.663 1.539 0.876 2452702.33196 0.664 1.548 0.884 2452702.33345 0.692 1.554 0.862 2452702.33493 0.683 1.545 0.862 2452702.33642 0.700 1.559 0.859 2452702.33791 0.704 1.575 0.871 2452702.33940 0.688 1.556 0.868 2452702.34088 0.700 1.571 0.871 2452702.34236 0.685 1.554 0.869 2452702.34385 0.741 1.602 0.861 2452702.34534 0.714 1.587 0.873 2452702.34682 0.739 1.591 0.852 2452702.34831 0.691 1.561 0.870 2452702.34979 0.728 1.584 0.856 2452702.35127 0.707 1.585 0.878 2452702.35277 0.719 1.586 0.867 2452702.35425 0.740 1.593 0.853 2452702.35574 0.728 1.604 0.876 2452702.35722 0.771 1.625 0.854 2452702.35870 0.717 1.565 0.848 2452702.36019 0.734 1.594 0.860 2452702.36168 0.718 1.593 0.875 2452702.36465 0.752 1.615 0.863 2452702.36613 0.756 1.610 0.854 2452702.36762 0.779 1.651 0.872 2452702.36911 0.759 1.623 0.864 2452702.37059 0.721 1.613 0.892 2452702.37207 0.786 1.643 0.857 2452702.37356 0.760 1.608 0.848 2452702.37505 0.784 1.645 0.861 2452702.37653 0.802 1.654 0.852 2452702.37802 0.765 1.613 0.848 2452702.37950 0.756 1.628 0.872 2452702.38100 0.789 1.657 0.868 2452702.38248 0.785 1.668 0.883 2452702.38396 0.777 1.640 0.863 2452702.38545 0.808 1.642 0.834 2452702.38693 0.789 1.651 0.862 2452702.38843 0.780 1.638 0.858 2452703.08241 0.703 1.568 0.865 2452703.08458 0.719 1.578 0.859 2452703.08677 0.679 1.547 0.868 2452703.08895 0.739 1.602 0.863 2452703.09113 0.706 1.558 0.852 2452703.09331 0.730 1.588 0.858 2452703.09549 0.747 1.597 0.850 2452703.09767 0.743 1.596 0.853 2452703.09985 0.736 1.604 0.868 2452703.10203 0.722 1.590 0.868 2452703.10420 0.748 1.606 0.858 2452703.10639 0.764 1.628 0.864 2452703.10856 0.748 1.619 0.871 2452703.11075 0.758 1.621 0.863 2452703.11293 0.752 1.617 0.865 2452703.11510 0.779 1.641 0.862 2452703.11728 0.804 1.650 0.846 2452703.11947 0.785 1.629 0.844 2452703.12164 0.798 1.674 0.876 2452703.12382 0.804 1.662 0.858 2452703.12600 0.784 1.635 0.851 2452703.12818 0.767 1.630 0.863 2452703.13036 0.823 1.672 0.849 2452703.13253 0.812 1.663 0.851 2452703.13471 0.801 1.661 0.860 2452703.13690 0.789 1.645 0.856 2452703.13907 0.787 1.644 0.857 2452703.14126 0.835 1.675 0.840 2452703.14344 0.813 1.668 0.855 2452703.14561 0.802 1.665 0.863 2452703.14780 0.797 1.651 0.854 2452703.14998 0.784 1.628 0.844 2452703.15214 0.796 1.650 0.854 2452703.15432 0.787 1.641 0.854 2452703.15652 0.790 1.648 0.858 2452703.15869 0.767 1.624 0.857 2452703.16087 0.789 1.637 0.848 2452703.16306 0.781 1.632 0.851 2452703.16523 0.787 1.637 0.850 2452703.16741 0.758 1.616 0.858 2452703.16959 0.762 1.606 0.844 2452703.17177 0.777 1.634 0.857 2452703.17396 0.734 1.591 0.857 2452703.17613 0.766 1.615 0.849 2452703.17832 0.738 1.607 0.869 2452703.18050 0.713 1.576 0.863 2452703.18267 0.740 1.601 0.861 2452703.18485 0.751 1.604 0.853 2452703.18703 0.725 1.591 0.866 2452703.18920 0.734 1.592 0.858 2452703.19139 0.736 1.588 0.852 2452703.19356 0.736 1.577 0.841 2452703.19574 0.730 1.573 0.843 2452703.19792 0.740 1.582 0.842 2452703.20010 0.709 1.567 0.858 2452703.20228 0.717 1.574 0.857 2452703.20446 0.712 1.570 0.858 2452703.20664 0.720 1.573 0.853 2452703.20882 0.727 1.575 0.848 2452703.21100 0.730 1.574 0.844 2452703.21317 0.695 1.539 0.844 2452703.21536 0.714 1.550 0.836 2452703.21753 0.690 1.541 0.851 2452703.21972 0.688 1.546 0.858 2452703.22190 0.696 1.557 0.861 2452703.22407 0.710 1.563 0.853 2452703.22626 0.693 1.549 0.856 2452703.22844 0.727 1.573 0.846 2452703.23061 0.708 1.566 0.858 2452703.23280 0.685 1.542 0.857 2452703.23498 0.676 1.532 0.856 2452703.23716 0.704 1.571 0.867 2452703.23934 0.707 1.565 0.858 2452703.24152 0.683 1.550 0.867 2452703.24370 0.694 1.552 0.858 2452703.24588 0.711 1.559 0.848 2452703.24806 0.704 1.551 0.847 2452703.25023 0.720 1.567 0.847 2452703.25241 0.735 1.588 0.853 2452703.25459 0.700 1.559 0.859 2452703.25677 0.712 1.571 0.859 2452703.25896 0.726 1.567 0.841 2452703.26113 0.717 1.569 0.852 2452703.26331 0.728 1.577 0.849 2452703.26550 0.749 1.599 0.850 2452703.26767 0.734 1.579 0.845 2452703.26986 0.722 1.575 0.853 2452703.27204 0.739 1.586 0.847 2452703.27421 0.761 1.611 0.850 2452703.27640 0.739 1.595 0.856 2452703.27858 0.728 1.586 0.858 2452703.28075 0.738 1.601 0.863 2452703.28293 0.723 1.595 0.872 2452703.28512 0.762 1.612 0.850 2452703.28729 0.764 1.621 0.857 2452703.28947 0.748 1.607 0.859 2452703.29164 0.749 1.607 0.858 2452703.29383 0.757 1.614 0.857 2452703.29601 0.767 1.621 0.854 2452703.29819 0.796 1.647 0.851 2452703.30037 0.753 1.616 0.863 2452703.30256 0.768 1.619 0.851 2452703.30473 0.774 1.637 0.863 2452703.30691 0.783 1.638 0.855 2452703.30910 0.751 1.622 0.871 2452703.31127 0.775 1.628 0.853 2452703.31345 0.771 1.621 0.850 2452703.31564 0.780 1.625 0.845 2452703.31781 0.775 1.624 0.849 2452703.32000 0.758 1.617 0.859 2452703.32218 0.778 1.627 0.849 2452703.32435 0.758 1.608 0.850 2452703.32653 0.776 1.623 0.847 2452703.32872 0.777 1.618 0.841 2452703.33089 0.749 1.598 0.849 2452703.33307 0.755 1.597 0.842 2452703.33524 0.771 1.618 0.847 2452703.33742 0.773 1.628 0.855 2452703.33959 0.753 1.618 0.865 2452703.34178 0.771 1.624 0.853 2452703.34396 0.735 1.588 0.853 2452703.34613 0.767 1.621 0.854 2452703.34831 0.710 1.580 0.870 2452703.35050 0.742 1.597 0.855 2452703.35267 0.734 1.596 0.862 2452703.35486 0.751 1.594 0.843 2452703.35704 0.715 1.574 0.859 2452703.35922 0.696 1.549 0.853 2452703.36140 0.741 1.595 0.854 2452703.36358 0.716 1.569 0.853 2452703.36576 0.733 1.577 0.844 2452703.36794 0.701 1.550 0.849 2452703.37012 0.722 1.569 0.847 2452703.37230 0.702 1.560 0.858 2452703.37448 0.701 1.562 0.861 2452703.37668 0.722 1.574 0.852 2452703.37884 0.721 1.571 0.850 2452703.38103 0.693 1.551 0.858 2452703.38321 0.684 1.552 0.868 2452703.38539 0.683 1.540 0.857 2452703.38757 0.668 1.537 0.869 2452703.38975 0.679 1.518 0.839 2452703.39192 0.673 1.528 0.855 2452703.39411 0.652 1.506 0.854 -------------------------------------
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