[vsnet-grb 172142] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Apr 12 13:05:21 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     519380,   Seg_Num: 0
GRB_RA:          235.0097d {+15h 40m 02.32s} (J2000),
                 235.1540d {+15h 40m 36.95s} (current),
                 234.4215d {+15h 37m 41.15s} (1950)
GRB_DEC:         +12.8844d {+12d 53' 03.8"} (J2000),
                 +12.8453d {+12d 50' 43.2"} (current),
                 +13.0452d {+13d 02' 42.7"} (1950)
GRB_ERROR:       2.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16021 TJD;    95 DOY;   12/04/04
IMG_START_TIME:  46505.00 SOD {12:55:05.00} UT,   242.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        13.96d {+00h 55m 51s}   +5.97d {+05d 58' 18"}
SUN_DIST:        134.96 [deg]   Sun_angle= 9.3 [hr] (West of Sun)
MOON_POSTN:      163.27d {+10h 53m 05s}   +1.68d {+01d 40' 40"}
MOON_DIST:        71.97 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       21.60, 48.15 [deg] galactic lon,lat of the burst
ECL_COORDS:      229.04, 31.48 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.11% < P(seren) < 0.58%.