[vsnet-grb 379059] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 04 Sep 18 21:41:25 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     859282,   Seg_Num: 0
GRB_RA:          274.2495d {+18h 17m 00.11s} (J2000),
                 274.3790d {+18h 17m 30.96s} (current),
                 273.9028d {+18h 15m 36.68s} (1950)
GRB_DEC:         +46.6298d {+46d 37' 47.2"} (J2000),
                 +46.6376d {+46d 38' 15.4"} (current),
                 +46.6100d {+46d 36' 36.0"} (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:  18365 TJD;   247 DOY;   18/09/04
IMG_START_TIME:  77534.00 SOD {21:32:14.00} UT,   221.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       163.68d {+10h 54m 44s}   +6.94d {+06d 56' 35"}
SUN_DIST:         98.80 [deg]   Sun_angle= -7.4 [hr] (East of Sun)
MOON_POSTN:       96.07d {+06h 24m 18s}  +20.87d {+20d 52' 10"}
MOON_DIST:       112.48 [deg]
MOON_ILLUM:      30 [%]
GAL_COORDS:       74.40, 25.02 [deg] galactic lon,lat of the burst
ECL_COORDS:      278.53, 69.94 [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%.