[vsnet-grb 327441] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 31 May 17 22:18:50 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     755354,   Seg_Num: 0
GRB_RA:          286.8835d {+19h 07m 32.04s} (J2000),
                 287.1339d {+19h 08m 32.14s} (current),
                 286.1641d {+19h 04m 39.39s} (1950)
GRB_DEC:         -16.4192d {-16d 25' 09.1"} (J2000),
                 -16.3908d {-16d 23' 27.0"} (current),
                 -16.4984d {-16d 29' 54.1"} (1950)
GRB_ERROR:       2.4 [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:  79609.00 SOD {22:06:49.00} UT,   279.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        69.05d {+04h 36m 12s}  +22.04d {+22d 02' 23"}
SUN_DIST:        143.69 [deg]   Sun_angle= 9.5 [hr] (West of Sun)
MOON_POSTN:      155.54d {+10h 22m 09s}  +10.61d {+10d 36' 25"}
MOON_DIST:       132.68 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:       19.93,-10.88 [deg] galactic lon,lat of the burst
ECL_COORDS:      286.27,  6.07 [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%.