TITLE:          GCN/IPN/HUNTSVILLE LOCALIZATION
NOTICE_TYPE:    Updated (based on the BATSE-LOCBURST location)
NOTICE_DATE:    Sat Jun 13 01:09:41 GMT 1998
TRIGGER_NUM:    6816
GRB_DATE:       98/06/11
GRB_TIME:       00:48:59.87 UT
BACO_RA:        276.94d {+18h 27m 47s}   (J2000)
BACO_DEC:       +60.54d {+60d 32' 28"}
HUNT_RA:        272.02d {+18h 08m 04s}   (J2000)
HUNT_DEC:       55.22d {+55d 13' 18"}
HUNT_ERR:       2.06 [degees radius, statistical only]
B_H_DELTA:      5.93 [deg]
HUNT_SC_AZ:     259.33 [deg]
HUNT_SC_EL:     -2.02 [deg]  {Zen_angle=92.02}
SUN_POSTN:      79.04d {+05h 16m 09s}   +23.06d {+23d 03' 24"}   (Current)
SUN_B_DIST:     95.14 [deg]
MOON_POSTN:     270.09d {+18h 00m 21s}  -18.88d {-18d 53' 04"}   (Current)
MOON_B_DIST:    79.62 [deg]
ANNULUS_RA:     330.0151d {+22h 00m 04s}   (J2000)
ANNULUS_DEC:    -10.6112d {-10d 36' 39"}
ANNULUS_RADIUS: 79.531 [deg]
ANNULUS_WIDTH:  0.059 [deg]  (Total width)
COMMENTS:       Duration approximately 40 sec.  Multiple peaks.
COMMENTS:       This burst was followed-up by RXTE-PCA.  The PCA detected
COMMENTS:       two sources:  the first was at the very edge of their scanning
COMMENTS:       box and hard to localize (RA=279,Dec=+56),  the second source
COMMENTS:       is at RA=276.47,Dec=+53.86.
COMMENTS:       This IPN localization is at T+27 hrs.

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

 281.457   58.605     6.16   <=== +3-sigma probability
 281.331   58.531     6.06
 281.206   58.456     5.97
 281.081   58.381     5.88
 280.957   58.306     5.78
 280.832   58.231     5.69
 280.708   58.155     5.60
 280.584   58.078     5.50
 280.460   58.002     5.41
 280.337   57.925     5.32
 280.213   57.847     5.22
 280.090   57.770     5.13
 279.967   57.692     5.03
 279.844   57.613     4.94
 279.722   57.534     4.85
 279.600   57.455     4.76
 279.478   57.376     4.66
 279.356   57.296     4.57
 279.234   57.215     4.48
 279.113   57.135     4.39
 278.992   57.054     4.29
 278.871   56.972     4.20
 278.751   56.891     4.11   <=== +2-sigma probability
 278.630   56.809     4.02
 278.510   56.726     3.93
 278.390   56.643     3.84
 278.271   56.560     3.75
 278.151   56.476     3.66
 278.032   56.393     3.58
 277.914   56.308     3.49
 277.795   56.224     3.40
 277.677   56.139     3.32
 277.559   56.053     3.23
 277.441   55.967     3.15
 277.323   55.881     3.07
 277.206   55.795     2.99
 277.089   55.708     2.91
 276.972   55.621     2.84
 276.856   55.533     2.76
 276.740   55.445     2.69
 276.624   55.357     2.62
 276.508   55.268     2.56
 276.393   55.179     2.50
 276.278   55.090     2.44
 276.163   55.000     2.38
 276.048   54.910     2.33
 275.934   54.820     2.28
 275.820   54.729     2.24
 275.706   54.638     2.20
 275.593   54.546     2.16
 275.480   54.454     2.13
 275.367   54.362     2.11
 275.255   54.269     2.09
 275.142   54.176     2.08
 275.030   54.083     2.08  <== maximum probability
 274.919   53.989     2.08
 274.807   53.895     2.09
 274.696   53.801     2.10
 274.586   53.706     2.12
 274.475   53.611     2.15
 274.365   53.516     2.18
 274.255   53.420     2.22
 274.146   53.324     2.27
 274.036   53.228     2.31
 273.927   53.131     2.37
 273.819   53.034     2.43
 273.710   52.936     2.49
 273.602   52.839     2.56
 273.495   52.740     2.63
 273.387   52.642     2.70
 273.280   52.543     2.78
 273.173   52.444     2.86
 273.067   52.344     2.94
 272.961   52.245     3.03
 272.855   52.144     3.11
 272.749   52.044     3.21
 272.644   51.943     3.30
 272.539   51.842     3.39
 272.435   51.741     3.49
 272.331   51.639     3.59
 272.227   51.537     3.69
 272.123   51.434     3.79
 272.020   51.331     3.89
 271.917   51.228     3.99
 271.814   51.125     4.10   <=== -2-sigma probability
 271.712   51.021     4.20
 271.610   50.917     4.31
 271.508   50.813     4.42
 271.407   50.708     4.53
 271.306   50.603     4.64
 271.205   50.498     4.75
 271.105   50.392     4.86
 271.005   50.286     4.97
 270.905   50.180     5.08
 270.806   50.074     5.20
 270.706   49.967     5.31
 270.608   49.860     5.43
 270.509   49.752     5.54
 270.411   49.644     5.66
 270.314   49.536     5.78
 270.216   49.428     5.90
 270.119   49.319     6.01
 270.022   49.211     6.13   <=== -3-sigma probability
-------------------------------- THE END --------------------------------