TITLE: GCN/IPN/HUNTSVILLE LOCALIZATION NOTICE_TYPE: Updated (based on the BATSE-LOCBURST location) NOTICE_DATE: Wed May 19 19:14:10 GMT 1999 TRIGGER_NUM: 7575 GRB_DATE: 99/05/18 GRB_TIME: 17:18:45.49 UT BACO_RA: 321.84d {+21h 27m 22s} (J2000) BACO_DEC: -47.83d {-47d 49' 37"} HUNT_RA: 347.01d {+23h 08m 02s} (J2000) HUNT_DEC: -37.11d {-37d 06' 44"} HUNT_ERR: 2.02 [degees radius, statistical plus systematic] B_H_DELTA: 21.28 [deg] HUNT_SC_AZ: 19.80 [deg] HUNT_SC_EL: -27.47 [deg] {Zen_angle=117.47} SUN_POSTN: 55.05d {+03h 40m 12s} +19.56d {+19d 33' 47"} (Current) SUN_B_DIST: 106.48 [deg] MOON_POSTN: 103.48d {+06h 53m 55s} +19.96d {+19d 57' 41"} (Current) MOON_B_DIST: 138.41 [deg] ANNULUS_RA: 324.6405d {+21h 38m 34s} (J2000) ANNULUS_DEC: 7.1026d {+07d 06' 09"} ANNULUS_RADIUS: 48.898 [deg] ANNULUS_WIDTH: 0.088 [deg] (Total width) COMMENTS: Duration ~200 sec. Trigger event is small, but then another COMMENTS: episode started ~150sec later was very large (dur. ~50sec). This IPN localization is preliminary. The "total width" of the annulus was selected to include all known uncertainties and systematics. The final analysis will reduce this width. All follow-up queries should be addressed to Kevin Hurley (UC Berkeley, khurley@sunspot.ssl.berkeley.edu). The center of the IPN annulus is tabulated below along the segment that intersects the Huntsville error circle. The Distance column is the sky-angle distance between the Huntville location and the sampled position on the arc segment. The position of maximum probability plus the 1-, 2-, & 3-sigma containment probabilities (statistical+systematic) are marked. A detailed description of the format, content, and meaning of this document is given in the URL: http://gcn.gsfc.nasa.gov/gcn/ipn.html (J2000) RA DEC Distance 340.044 -39.674 6.03 <=== +3-sigma probability 340.106 -39.656 5.98 340.169 -39.638 5.93 340.231 -39.620 5.88 340.293 -39.602 5.82 340.355 -39.584 5.77 340.417 -39.566 5.72 340.480 -39.547 5.67 340.542 -39.529 5.62 340.604 -39.510 5.57 340.666 -39.491 5.52 340.728 -39.473 5.47 340.790 -39.454 5.41 340.852 -39.435 5.36 340.914 -39.416 5.31 340.976 -39.397 5.26 341.038 -39.378 5.21 341.100 -39.358 5.16 341.162 -39.339 5.10 341.224 -39.320 5.05 341.286 -39.300 5.00 341.348 -39.281 4.95 341.410 -39.261 4.90 341.471 -39.241 4.85 341.533 -39.222 4.79 341.595 -39.202 4.74 341.657 -39.182 4.69 341.718 -39.162 4.64 341.780 -39.142 4.59 341.842 -39.122 4.54 341.904 -39.101 4.48 341.965 -39.081 4.43 342.027 -39.060 4.38 342.088 -39.040 4.33 342.150 -39.019 4.28 342.212 -38.999 4.22 342.273 -38.978 4.17 342.335 -38.957 4.12 342.396 -38.936 4.07 342.458 -38.915 4.01 <=== +2-sigma probability 342.519 -38.894 3.96 342.580 -38.873 3.91 342.642 -38.852 3.86 342.703 -38.830 3.81 342.764 -38.809 3.75 342.826 -38.787 3.70 342.887 -38.766 3.65 342.948 -38.744 3.60 343.010 -38.722 3.54 343.071 -38.701 3.49 343.132 -38.679 3.44 343.193 -38.657 3.39 343.254 -38.635 3.33 343.315 -38.612 3.28 343.376 -38.590 3.23 343.437 -38.568 3.18 343.498 -38.545 3.12 343.559 -38.523 3.07 343.620 -38.500 3.02 343.681 -38.478 2.96 343.742 -38.455 2.91 343.803 -38.432 2.86 343.864 -38.409 2.81 343.925 -38.386 2.75 343.986 -38.363 2.70 344.046 -38.340 2.65 344.107 -38.317 2.59 344.168 -38.294 2.54 344.229 -38.270 2.49 344.289 -38.247 2.43 344.350 -38.223 2.38 344.410 -38.199 2.33 344.471 -38.176 2.28 344.532 -38.152 2.22 344.592 -38.128 2.17 344.653 -38.104 2.12 344.713 -38.080 2.06 344.773 -38.056 2.01 <=== +1-sigma probability 344.834 -38.032 1.96 344.894 -38.007 1.90 344.955 -37.983 1.85 345.015 -37.958 1.80 345.075 -37.934 1.74 345.135 -37.909 1.69 345.196 -37.884 1.63 345.256 -37.860 1.58 345.316 -37.835 1.53 345.376 -37.810 1.47 345.436 -37.785 1.42 345.496 -37.759 1.37 345.556 -37.734 1.31 345.616 -37.709 1.26 345.676 -37.684 1.20 345.736 -37.658 1.15 345.796 -37.632 1.10 345.856 -37.607 1.04 345.916 -37.581 0.99 345.975 -37.555 0.94 346.035 -37.529 0.88 346.095 -37.503 0.83 346.155 -37.477 0.77 346.214 -37.451 0.72 346.274 -37.425 0.67 346.334 -37.399 0.61 346.393 -37.372 0.56 346.453 -37.346 0.50 346.512 -37.319 0.45 346.572 -37.292 0.39 346.631 -37.266 0.34 346.690 -37.239 0.29 346.750 -37.212 0.23 346.809 -37.185 0.18 346.868 -37.158 0.12 346.928 -37.131 0.07 346.987 -37.103 0.02 346.987 -37.103 0.02 <=== Max probability 346.987 -37.103 0.02 347.046 -37.076 0.04 347.105 -37.048 0.10 347.164 -37.021 0.15 347.223 -36.993 0.21 347.282 -36.966 0.26 347.341 -36.938 0.32 347.400 -36.910 0.37 347.459 -36.882 0.43 347.518 -36.854 0.48 347.577 -36.826 0.53 347.636 -36.798 0.59 347.694 -36.769 0.64 347.753 -36.741 0.70 347.812 -36.713 0.75 347.871 -36.684 0.81 347.929 -36.655 0.86 347.988 -36.627 0.92 348.046 -36.598 0.97 348.105 -36.569 1.03 348.163 -36.540 1.08 348.222 -36.511 1.14 348.280 -36.482 1.20 348.338 -36.453 1.25 348.397 -36.423 1.31 348.455 -36.394 1.36 348.513 -36.365 1.42 348.571 -36.335 1.47 348.629 -36.305 1.53 348.688 -36.276 1.58 348.746 -36.246 1.64 348.804 -36.216 1.69 348.862 -36.186 1.75 348.919 -36.156 1.81 348.977 -36.126 1.86 349.035 -36.095 1.92 349.093 -36.065 1.97 349.151 -36.035 2.03 <=== -1-sigma probability 349.209 -36.004 2.08 349.266 -35.974 2.14 349.324 -35.943 2.20 349.381 -35.912 2.25 349.439 -35.881 2.31 349.497 -35.850 2.36 349.554 -35.819 2.42 349.611 -35.788 2.47 349.669 -35.757 2.53 349.726 -35.726 2.59 349.783 -35.695 2.64 349.841 -35.663 2.70 349.898 -35.632 2.76 349.955 -35.600 2.81 350.012 -35.568 2.87 350.069 -35.537 2.92 350.126 -35.505 2.98 350.183 -35.473 3.04 350.240 -35.441 3.09 350.297 -35.409 3.15 350.354 -35.376 3.21 350.411 -35.344 3.26 350.467 -35.312 3.32 350.524 -35.279 3.38 350.581 -35.247 3.43 350.637 -35.214 3.49 350.694 -35.181 3.54 350.750 -35.148 3.60 350.807 -35.116 3.66 350.863 -35.083 3.71 350.920 -35.050 3.77 350.976 -35.016 3.83 351.032 -34.983 3.89 351.088 -34.950 3.94 351.145 -34.916 4.00 351.201 -34.883 4.06 <=== -2-sigma probability 351.257 -34.849 4.11 351.313 -34.816 4.17 351.369 -34.782 4.23 351.425 -34.748 4.28 351.481 -34.714 4.34 351.537 -34.680 4.40 351.592 -34.646 4.46 351.648 -34.612 4.51 351.704 -34.578 4.57 351.759 -34.543 4.63 351.815 -34.509 4.68 351.871 -34.474 4.74 351.926 -34.440 4.80 351.981 -34.405 4.86 352.037 -34.370 4.91 352.092 -34.336 4.97 352.147 -34.301 5.03 352.203 -34.266 5.09 352.258 -34.231 5.14 352.313 -34.195 5.20 352.368 -34.160 5.26 352.423 -34.125 5.32 352.478 -34.089 5.37 352.533 -34.054 5.43 352.588 -34.018 5.49 352.643 -33.982 5.55 352.697 -33.947 5.60 352.752 -33.911 5.66 352.807 -33.875 5.72 352.861 -33.839 5.78 352.916 -33.803 5.84 352.970 -33.767 5.89 353.025 -33.730 5.95 353.079 -33.694 6.01 353.133 -33.657 6.07 <=== -3-sigma probability -------------------------------- THE END --------------------------------