[vsnet-grb 205238] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 12 Jun 13 03:40:24 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     557976,   Seg_Num: 0
GRB_RA:          259.7939d {+17h 19m 10.53s} (J2000),
                 259.9440d {+17h 19m 46.56s} (current),
                 259.2357d {+17h 16m 56.57s} (1950)
GRB_DEC:         +16.7205d {+16d 43' 13.8"} (J2000),
                 +16.7073d {+16d 42' 26.4"} (current),
                 +16.7712d {+16d 46' 16.1"} (1950)
GRB_ERROR:       2.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16455 TJD;   163 DOY;   13/06/12
IMG_START_TIME:  12831.00 SOD {03:33:51.00} UT,   688.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        80.59d {+05h 22m 21s}  +23.15d {+23d 09' 18"}
SUN_DIST:        140.13 [deg]   Sun_angle= -12.0 [hr] (East of Sun)
MOON_POSTN:      120.46d {+08h 01m 50s}  +15.41d {+15d 24' 45"}
MOON_DIST:       128.72 [deg]
MOON_ILLUM:      11 [%]
GAL_COORDS:       38.44, 27.72 [deg] galactic lon,lat of the burst
ECL_COORDS:      257.26, 39.71 [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 1.1% < P(seren) < 2.8%.