[vsnet-grb 327421] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 31 May 17 21:11:29 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     755343,   Seg_Num: 0
GRB_RA:          121.2523d {+08h 05m 00.55s} (J2000),
                 121.4547d {+08h 05m 49.12s} (current),
                 120.6711d {+08h 02m 41.06s} (1950)
GRB_DEC:         -14.0227d {-14d 01' 21.7"} (J2000),
                 -14.0731d {-14d 04' 23.3"} (current),
                 -13.8795d {-13d 52' 46.0"} (1950)
GRB_ERROR:       3.5 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17904 TJD;   151 DOY;   17/05/31
IMG_START_TIME:  72707.00 SOD {20:11:47.00} UT
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        69.00d {+04h 36m 00s}  +22.03d {+22d 01' 60"}
SUN_DIST:         62.82 [deg]   Sun_angle= -3.5 [hr] (East of Sun)
MOON_POSTN:      154.93d {+10h 19m 43s}  +10.78d {+10d 46' 44"}
MOON_DIST:        41.47 [deg]
MOON_ILLUM:      43 [%]
GAL_COORDS:      234.03,  9.32 [deg] galactic lon,lat of the burst
ECL_COORDS:      127.14,-33.52 [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%.