TITLE: GCN/IPN/HUNTSVILLE LOCALIZATION NOTICE_TYPE: Final (based on the Huntsville AD Report location) NOTICE_DATE: Mon Jan 26 21:21:32 GMT 1998 TRIGGER_NUM: 6581 GRB_DATE: 98/01/25 GRB_TIME: 20:39:28.73 UT BACO_RA: 355.39d {+23h 41m 35s} (J2000) BACO_DEC: +30.42d {+30d 25' 15"} HUNT_RA: 350.66d {+23h 22m 38s} (J2000) HUNT_DEC: +35.80d {+35d 48' 13"} HUNT_ERR: 1.89 [degees radius, statistical only] B_H_DELTA: 6.69 [deg] HUNT_SC_AZ: 84.00 [deg] HUNT_SC_EL: 34.30 [deg] {Zen_angle=55.70} SUN_POSTN: 308.05d {+20h 32m 12s} -18.85d {-18d 51' 01"} (Current) SUN_B_DIST: 67.06 [deg] MOON_POSTN: 274.73d {+18h 18m 55s} -18.62d {-18d 37' 09"} (Current) MOON_B_DIST: 91.65 [deg] ANNULUS_RA: 347.2737d {+23h 09m 06s} (J2000) ANNULUS_DEC: -11.8673d {-11d 52' 01"} ANNULUS_RADIUS: 45.302 [deg] ANNULUS_WIDTH: 0.096 [deg] (Total width) COMMENTS: GRB MULTIPLE PULSES. MAIN PEAK AT APPROX. T+40 SEC. COMMENTS: WITH DURATION APPROX. = 9 SEC. EMISSION AT T HAS TWO PULSES COMMENTS: WITH DURATION APPROX. = 20SEC. EMISSION AT T+34 SEC LASTS COMMENTS: THROUGH THE MAIN PEAK. POST EMISSION AT APPROX. T+225 SEC. COMMENTS: HAS TWO PULSES LASTING APPROX. 45 SEC. TOTAL DURATION COMMENTS APPROX. = 270 SEC. MAIN PULSE VISIBLE ABOVE 300KEV. 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). SPECIAL NOTES: The GCN/IPN Notice is being distributed at T+24.7 hours. This 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 356.296 32.607 5.65 <=== +3-sigma probability 356.240 32.617 5.60 356.185 32.627 5.56 356.129 32.637 5.52 356.074 32.647 5.47 356.019 32.657 5.43 355.963 32.667 5.39 355.908 32.677 5.34 355.852 32.687 5.30 355.797 32.697 5.26 355.741 32.706 5.22 355.686 32.716 5.17 355.631 32.726 5.13 355.575 32.735 5.09 355.520 32.745 5.04 355.464 32.754 5.00 355.409 32.763 4.96 355.353 32.772 4.92 355.298 32.782 4.88 355.242 32.791 4.83 355.186 32.800 4.79 355.131 32.809 4.75 355.075 32.818 4.71 355.020 32.827 4.67 354.964 32.835 4.63 354.909 32.844 4.59 354.853 32.853 4.55 354.797 32.861 4.51 354.742 32.870 4.47 354.686 32.878 4.42 354.630 32.887 4.38 354.575 32.895 4.34 354.519 32.903 4.31 354.463 32.912 4.27 354.408 32.920 4.23 354.352 32.928 4.19 354.296 32.936 4.15 354.241 32.944 4.11 354.185 32.952 4.07 354.129 32.959 4.03 354.073 32.967 3.99 354.018 32.975 3.96 353.962 32.983 3.92 353.906 32.990 3.88 353.851 32.998 3.84 353.795 33.005 3.81 353.739 33.012 3.77 <=== +2-sigma probability 353.683 33.020 3.73 353.627 33.027 3.70 353.572 33.034 3.66 353.516 33.041 3.63 353.460 33.048 3.59 353.404 33.055 3.56 353.348 33.062 3.52 353.293 33.069 3.49 353.237 33.076 3.45 353.181 33.082 3.42 353.125 33.089 3.39 353.069 33.096 3.36 353.013 33.102 3.32 352.957 33.109 3.29 352.901 33.115 3.26 352.846 33.122 3.23 352.790 33.128 3.20 352.734 33.134 3.17 352.678 33.140 3.14 352.622 33.146 3.11 352.566 33.152 3.08 352.510 33.158 3.05 352.454 33.164 3.02 352.398 33.170 2.99 352.342 33.176 2.97 352.286 33.181 2.94 352.230 33.187 2.92 352.175 33.193 2.89 352.119 33.198 2.87 352.063 33.204 2.84 352.007 33.209 2.82 351.951 33.214 2.80 351.895 33.220 2.77 351.839 33.225 2.75 351.783 33.230 2.73 351.727 33.235 2.71 351.671 33.240 2.69 351.615 33.245 2.67 351.559 33.250 2.66 351.503 33.255 2.64 351.447 33.259 2.62 351.391 33.264 2.61 351.335 33.269 2.59 351.278 33.273 2.58 351.222 33.278 2.56 351.166 33.282 2.55 351.110 33.287 2.54 351.054 33.291 2.53 350.998 33.295 2.52 350.942 33.299 2.51 350.886 33.303 2.50 350.830 33.307 2.50 350.774 33.311 2.49 350.718 33.315 2.49 350.662 33.319 2.48 350.606 33.323 2.48 350.550 33.327 2.47 350.493 33.330 2.47 350.437 33.334 2.47 <=== Maximum probabilty 350.381 33.338 2.47 350.325 33.341 2.47 350.269 33.344 2.48 350.213 33.348 2.48 350.157 33.351 2.48 350.101 33.354 2.49 350.045 33.358 2.49 349.988 33.361 2.50 349.932 33.364 2.51 349.876 33.367 2.52 349.820 33.370 2.53 349.764 33.372 2.54 349.708 33.375 2.55 349.652 33.378 2.56 349.595 33.380 2.57 349.539 33.383 2.59 349.483 33.386 2.60 349.427 33.388 2.62 349.371 33.390 2.63 349.315 33.393 2.65 349.259 33.395 2.67 349.202 33.397 2.69 349.146 33.399 2.70 349.090 33.401 2.72 349.034 33.404 2.74 348.978 33.405 2.77 348.922 33.407 2.79 348.865 33.409 2.81 348.809 33.411 2.83 348.753 33.413 2.86 348.697 33.414 2.88 348.641 33.416 2.91 348.584 33.417 2.93 348.528 33.419 2.96 348.472 33.420 2.98 348.416 33.422 3.01 348.360 33.423 3.04 348.304 33.424 3.07 348.247 33.425 3.10 348.191 33.426 3.12 348.135 33.427 3.15 348.079 33.428 3.18 348.023 33.429 3.21 347.966 33.430 3.25 347.910 33.431 3.28 347.854 33.431 3.31 347.798 33.432 3.34 347.742 33.432 3.37 347.685 33.433 3.40 347.629 33.433 3.44 347.573 33.434 3.47 347.517 33.434 3.51 347.461 33.434 3.54 347.404 33.434 3.57 347.348 33.435 3.61 347.292 33.435 3.64 347.236 33.435 3.68 347.180 33.434 3.71 347.123 33.434 3.75 347.067 33.434 3.79 <=== -2-sigma probability 347.011 33.434 3.82 346.955 33.433 3.86 346.899 33.433 3.90 346.842 33.433 3.93 346.786 33.432 3.97 346.730 33.432 4.01 346.674 33.431 4.05 346.618 33.430 4.08 346.561 33.430 4.12 346.505 33.429 4.16 346.449 33.428 4.20 346.393 33.427 4.24 346.337 33.426 4.28 346.280 33.425 4.32 346.224 33.424 4.36 346.168 33.422 4.39 346.112 33.421 4.43 346.056 33.420 4.47 345.999 33.418 4.51 345.943 33.417 4.55 345.887 33.415 4.59 345.831 33.414 4.64 345.775 33.412 4.68 345.718 33.410 4.72 345.662 33.409 4.76 345.606 33.407 4.80 345.550 33.405 4.84 345.494 33.403 4.88 345.438 33.401 4.92 345.381 33.399 4.96 345.325 33.396 5.00 345.269 33.394 5.05 345.213 33.392 5.09 345.157 33.390 5.13 345.101 33.387 5.17 345.044 33.385 5.21 344.988 33.382 5.26 344.932 33.380 5.30 344.876 33.377 5.34 344.820 33.374 5.38 344.764 33.371 5.43 344.708 33.368 5.47 344.651 33.366 5.51 344.595 33.363 5.55 344.539 33.360 5.60 344.483 33.356 5.64 344.427 33.353 5.68 <=== -3-sigma probability -------------------------------- THE END --------------------------------